H
1
11
13
12
12
13
13
16
16
18
19
19
20
21
21
21
21
1976
PAGE
13b{1)
Page
DIVISION
Frame
Frame
OFFICES
February
Train-CT
Train-CT
ET
Connectors
SECTION
1,
Senders
Supply
AND
Receiving
Their
Issue
Connector
CT
Separate
and
Combined
TO
Outgoing
Current
a
and
Pulsing
a
Frame
Connector
CONTENTS
SYSTEM
Frames
Senders
Sender
ELEMENTS Connector
Connector Link
Block
COMMON
Requiring
Through
Through
Controller
the
Office
Call
Office
Call
Marker
Calls Incoming
Switching
Link
Trunk Decoder
Sender
Multifrequency
Multifrequency
Marker
Outgoing
agreement
EQUIPMENT
ELEMENTS
B.
A.
C.
A.
B.
E.
D.
F.
H.
C. I.
K.
G.
J.
outside
CROSSBAR
MANAGEMENT
TRANSLATOR
4.
written
U.S.A.
4M
in
under
DESCRIPTION
disclosure
4
5
4
5 NOTICE
5
5
5
5
5
7
8
6
8 6
9
9
9
10
or
Printed
AND
PAGE
SYSTEMS
except
use
for
4A
SYSTEM
System
Not
Bell
NO.
STORE
EQUIPMENT
PRACTICES
OPERATIONS
SWITCHING
CONTROL
PRINCIPAL
PATH
CONTENTS
ELECTROMECHANICAL-CARD
Trains
Frames
SWITCHING
Frames
OF
PRINCIPLES
FRAMES
SWITCH
MANAGEMENT
Grouping
CONTROL
Size
OF
PROGRAM
TALKING
TRANSLATION
TRANSLATOR
Standard
Incoming
Outgoing Frame
Switching
Offtee
066
FACILITIES
GENERAL
COMMON 4-WIRE CONNECTORS STORED ROUTE
SWITCHING
CARD
FUNCTIONS JUNCTORS
CROSSBAR
SWITCHING
CONTROL ELEMENTS
TCo
B.
A.
A.
B.
C.
&
1.
2.
3.
006
DIAL
AT
63 63
60 60
57 57
61 61
60 60
55 55
53 53
49 49 51 51
53 53
49 49
59 59
47 47
45 45
46 46
45 45
45 45
45 45 44 44
44 44
46 46
PAGE PAGE
• •
Set Set
Office Office
Trunk Trunk
Control Control
Test Test
Crossbar Crossbar
Outgoing Outgoing
Outgoing Outgoing
CT CT
Horizontal Horizontal
Horizontal Horizontal
0 0
. . . . .
1 1
and and
Unit Unit
(20 (20
( (
and and
. .
Train Train
lntertoll lntertoll
Frames Frames
EQUIPMENT EQUIPMENT
Operation Operation
of of
• •
Common Common
Frequency Frequency
Set Set
Operation Operation
Testboard Testboard
Switch Switch
Switch Switch
Incoming Incoming
View View
Incoming Incoming
Test Test
Toll Toll
Combined Combined
Switching Switching
Outgoing Outgoing
CONTENTS CONTENTS
Between Between
a a
......
Bays Bays
Point) Point)
Crossbar Crossbar
Crossbar Crossbar
Through Through
Trunk Trunk
and and
Identification Identification
. .
MAINTENANCE MAINTENANCE
Frame Frame
of of
of of
Frame Frame
Train-Combined Train-Combined
Between Between
Switches Switches
Frame Frame
REGISTERS REGISTERS
17-Type 17-Type
Distribution Distribution
(200 (200
Call Call
Perspective Perspective
Train-Combined Train-Combined
UNE UNE
Through Through
of of
Automatic Automatic
Patching Patching No. No.
Test Test
Plug-in Plug-in
Frame Frame
Equipment Equipment
Relationship Relationship
Call Call
Separate Separate
Junctor Junctor
Single Single
Incoming Incoming
Frames Frames
Path Path
Outgoing Outgoing
Channel Channel
Paths) Paths)
Trunks Trunks
Partial Partial
Paths) Paths)
Schematic Schematic
Crossbar Crossbar
Schematic Schematic
Switch Switch
TRAFFIC TRAFFIC
ALARMS ALARMS
TOLL TOLL
B. B.
c. c.
A. A.
I. I.
J. J.
8. 8.
7. 7.
1. 1.
9. 9.
5. 5.
6. 6.
3. 3.
4. 4.
2. 2.
6. 6.
13. 13.
12. 12.
11. 11.
10. 10.
FIGURES FIGURES
43 43
44 44
43 43
41 41
40 40
36 36
36 36
40 40
40 40
36 36
27 27
27 27
35 35 35 35
29 29
35 35
22 22 22 22
23 23
22 22
22 22
23 23
PAGE PAGE
• •
or or
Test Test
Trunk Trunk
Frame Frame
Frame Frame
Offices Offices
Supply Supply
Control Control
Incoming Incoming
4A 4A
(AOOT (AOOT
Trunks Trunks
Test Test
Connecting Connecting
or or
Frame-
Frame Frame
in in
Equipment Equipment
lntertoll lntertoll
OFFICES OFFICES
Control Control
EQUIPMENT EQUIPMENT
Frame Frame
Test Test
Toll Toll
Connector Connector
Test Test
Trunk Trunk
Trunks Trunks
Frame Frame
Frequency Frequency
Reroute Reroute
CT CT
and and
Translators Translators
Frame Frame
Relays Relays
(AOCT (AOCT
Relay Relay
Connector Connector
......
Test Test
Frame Frame
Trunk Trunk
Traffic Traffic
TO TO
Offices) Offices)
Frames Frames
Test Test
. .
Console Console
Card Card
Register Register
Announcement Announcement
Chain Chain
......
4M 4M
Trunk Trunk
Outgoing Outgoing
FEATURES FEATURES
Frame Frame
CONTENTS CONTENTS
Translator Translator
Outgoing Outgoing
Route Route
Sender Sender
Outgoing, Outgoing,
in in
and and
Sender Sender
Overload Overload
Completing Completing
Recorder Recorder
MAINTENANCE MAINTENANCE
Translator Translator
Make-Busy Make-Busy
Outgoing Outgoing
and and
and and
Identification Identification
Busy Busy
Busy Busy
Control Control
Test Test
PECUUAR PECUUAR
Translator Translator
Set Set
Make-Busy Make-Busy
Toll Toll
ATCT ATCT
Incoming, Incoming,
Test Test
AOTT) AOTT)
Automatic Automatic
and and
for for or or
Automatic Automatic
Trunk Trunk
Manual Manual
Sender Sender
Outgoing Outgoing
Incoming Incoming
Sender Sender
Trouble Trouble
13b(l) 13b(l)
(Manual) (Manual)
Foreign Foreign
Traffic Traffic
Emergency Emergency
Decoders Decoders
Alternate Alternate
Frame Frame
Frame Frame Traffic Traffic
Card Card
Trunks Trunks
Group Group
Circuit Circuit
2 2
H. H.
MAINTENANCE MAINTENANCE
SWITCHING SWITCHING
G. G.
E. E.
ELEMENTS ELEMENTS
F. F.
D. D.
C. C.
B. B.
A. A.
E. E.
D. D.
B. B.
A. A.
P. P.
C. C.
N. N.
L. L.
M. M.
0. 0.
Q. Q.
5. 5.
Page Page SECTION SECTION DIVISION H, SECTION 13b(1)
CONTENTS PAGE CONTENTS PAGE
14. Call Through a Separate Train CT Office 33. Supplementary Decoder Connector Frame 65 for Use in Separate Train Offices, Combined Train Offices or Office Expanded to Separate 15. Information to Marker 67 Train Combined Operations 84
16. Seizing an Outgoing Trunk 67 34. Marker Connector Frame for Use in Separate Train Offices 85 17. Establishing a Channel 68 35. Outgoing Sender Frame 86 18. Marker Frame 69 36. Multifrequency Current Supply Frame 87 19. Pairing Switching Frames (Home and Mate Operation) 70 37. Frame Identification Frequency Supply and Control Frame 88 20. Access to Incoming Senders-Office Equipped With Flat-Spring MF Incoming Sender 71 38. Traffic Control Frame 88
21. Access to Incoming Senders-Office Equipped 39. Decoder Access to Card Translators 89 With Wire-Spring MF Incoming Sender 72 40. Decoder Frame 90 22. Incoming MF and DP Sender Frame-4M Offices 73 41. Card Translator Cabinet 91
23. Incoming MF and DP Sender Frame-4A 42. Translator Card 93 Offices 74 43. Effect of Dropped Card on Light Channels 24. Incoming Multifrequency Sender Frame-4A 95 Offices 75 44. Card Support and Code Bars Normal 95 25. Overseas Sender 76 45. Card Support and Code Bars Operated 26. Sender Link Frame-Sender Link Spread (Corresponding Card Drops) 95 (MF and DP Senders) 77 46. Elements of the Card Translator 96 27. Incoming or Outgoing Sender Link Frame 78 47. Foreign Translator Connector Frame (For Supplementary Foreign Translator Connector 28. Link Controller Operation 79 Frame) 97
29. Link Controller and Connector Frame 80 48. Emergency Translator Connector Frame (For 18-Decoder Capacity) 97 30. Sender Link Access to Link Controllers 81 49. Trouble Recorder Frame 98 31. Block Relay Frame 82 SO. Trouble Record Cards (Blank) 99 32. Decoder Connector Frame for Separate or Combined Train Offices 83 S 1. Trouble Record Card (Punched) 101
Page 3
a a
is is
of of
or or
or or
be be as as
or or
be be
16 16
on on
4A 4A
for for
the the
are are
the the
are are
the the
few few
The The
are: are:
are: are:
may may
from from
up up
reuse reuse
short short
to to
trunk trunk
a a
direct direct
which which
office. office.
dialed dialed
in in
and and
certain certain
the the
control control
well well
may may
trunks), trunks),
position position
used used
forward forward
between between
purpose. purpose.
(DP) (DP)
and and
with with
by by
incoming incoming
switching switching
up up
for for
would would
office, office,
set set
to to
dialing dialing
which which
customers customers
and and
of of
means means
ET ET
registered, registered,
office office
which which
as as
is is
translation translation
same same
routed routed
(a) (a)
calls calls
circuits circuits
operator operator
a a
can can
by by
to to
this this
The The
CT CT
two two
calls calls
frames frames
area area
manner manner
systems systems
an an
used used
toll toll
have have
Dialing". Dialing".
releases releases
the the
incoming incoming
a a been been
pulses pulses
an an
common common
alter, alter,
for for
choices choices
trunks trunks
applied applied
{intertoll {intertoll
office office
in in
it it
during during
that that
to to
are are
only only
this this
4M 4M
operator operator
in in
recorders, recorders,
registers, registers,
an an
4M 4M
A A
associated associated
control control
by by
with with
dial dial
have have
trunks). trunks).
equipment equipment
provides provides service service
timers. timers.
generally generally
In In
enough enough
and and
originate originate
equipment equipment
of of
the the
4A/ 4A/
for for
are are
controllers, controllers,
term term
store, store,
4A/ 4A/
originated originated
customer customer
switching switching
route route
trunks trunks
connections: connections: by by
Distance Distance
a a
which which
(SPC) (SPC)
or or
that that
are are
routing routing
in in
to to
the the
use use
alone. alone.
available available
and and
a a
possible possible
is is
digits digits
call. call.
long long
circuits circuits
link link
so so
treatment treatment
the the
and and
there there
the the
(MF) (MF)
indexers, indexers,
dial dial
common common
trunks trunks
master master
control control
at at
equipment equipment
by by
is is
control control
calls calls
after after
translators translators
extended extended
distributor distributor
connecting connecting
originated originated
of of
units units
of of
and and
connection. connection.
equipment equipment
it it
only only
the the control control
operators. operators.
or or
ability ability
and and
dialed dialed
(DDD) (DDD)
control control
selects selects
office office
destination. destination.
complete complete
classes classes
pulses pulses
different different
control control
another another
"Operator "Operator
routing routing
controlled controlled
(toll (toll
of of
completing completing
card card
digits digits
billing billing
been been
the the
call call
arriving arriving
the the
intertoll intertoll
many many
indications indications
CT CT
Operator Operator
local local
is is
the the
common common
information information
by by
office office
switching switching
Incoming Incoming
CONTROL CONTROL
a a
talking talking
area area
senders senders
and and
trunk trunk
to to
serve serve
portion portion
channels, channels,
dialing dialing
to to complicated complicated
either either
Some Some
connection, connection,
has has
long-distance long-distance
switching switching
system system
the the
a a
program program
dialed dialed
several several
ET ET
In In
Common Common
Calls Calls
the the After After
each each The The
have have
equipment equipment
class class
to to
common common
of of
calls calls
different different
to to
controllers, controllers,
digital digital
call call
up up
4M 4M
between between
center center
an an
4M 4M
long-distance long-distance
the the
1.07 1.07
1.05 1.05
1.08 1.08
1.06 1.06
Some Some
units units
(b) (b)
ready ready
CAMA CAMA
multifrequency multifrequency talking talking
markers, markers,
available. available. used used
distance distance decoder decoder toll toll
stored stored such such outside outside
transverters, transverters, equipment equipment
the the
link link
system system 4A/ 4A/
customer. customer.
set set automatically automatically
trunk trunk digits, digits, the the
incoming incoming
decoders decoders or or In In COMMON COMMON
various various
digits. digits.
or or class. class.
of of
given given
common common
a a
to to
to to
4A 4A
the the
107 107
105 105
the the
103 103
104 104
109 109
108 108
106 106
part part
card card
used used
PAGE PAGE
points points
a a
reason reason of of
the the
Section Section
network network
and and
is is
Test Test
Test Test
customer customer
Facilities Facilities
to to
necessary necessary
in in
ATCT ATCT
number(s) number(s)
H, H,
translator translator
the the
Trunk Trunk
Trunk Trunk
Trunk Trunk
equipment equipment
accounting accounting
covers covers Frame Frame
paragraph. paragraph.
peculiar peculiar
Frames Frames
a a
paragraph(s) paragraph(s)
for for
or or
The The
pertaining pertaining
It It
Dial Dial
establishing establishing
elements elements
the the
used used
calls calls
the the
this this
Test Test
Trunk Trunk
in in
Test Test
System System
decoders decoders
in in
of of
Division Division
description description
of of
reissued, reissued,
message message
electronic electronic
Offices Offices
includes includes
calls. calls.
of of
when when
where where only
elements elements
a a
network network
Connecting Connecting
Connecting Connecting
is is
Transmission Transmission
Connecting Connecting
system system
4A 4A
Frame Frame
Register Register
lntertoll lntertoll
identifies identifies
listed listed
toll toll
Systems. Systems.
information information
an an in
Toll Toll equipment equipment
Toll Toll
dialing dialing
figure figure
separately separately
in in
Toll Toll
Switching Switching
referenced. referenced.
Frame Frame
be be
(CT) (CT)
of of
(DFMPs), (DFMPs),
Test Test
and and
dialing dialing
Transmission Transmission
section section
is is
the the
discussed discussed
which which
used used
automatic automatic
exception exception
provides provides
CONTENTS CONTENTS
description description
operation operation
each each
Toll Toll
is is
equipment equipment
will will
be be
of of
Associated Associated
Frame Frame
general general
AOTT) AOTT)
this this
a a
(AOCT (AOCT
and and
of of
the the
Outgoing Outgoing
covered covered
for for
Outgoing Outgoing
Outgoing Outgoing
Sender Sender
Switching Switching
Sender Sender
dialing dialing
figure figure
customer customer
Outgoing Outgoing
The The
will will
distance distance
and and
Practices Practices
are are
and and
Make-Busy Make-Busy
section section
and and
Offices) Offices)
translator translator
and and
Most Most
with with
4A/4M 4A/4M
title title
reissue reissue
Frame Frame
Frame Frame
Control Control
the the
for for
the the
13b(1) 13b(1)
Toll Toll
parentheses parentheses
operation operation
method method
Centralized Centralized
4M 4M
office office
office office
Whenever Whenever
for for
of of
The The
card card
in in
The The
This This
4 4
office office
(AOOT (AOOT
Incoming Incoming
in in
Sender Sender
Frame Frame
Automatic Automatic Automatic Automatic
and and Test Test
Automatic Automatic
Manual Manual
Operational Operational
Test Test
Outgoing Outgoing
4M 4M
operator operator
GENERAL GENERAL
CT CT
clarity. clarity.
elements elements
ET ET
which which
a a
1.02 1.02
1.04 1.04
1.03 1.03
1.01 1.01
1. 1.
52. 52.
SECTION SECTION
provides provides
53. 53.
in in
56. 56.
Page Page (ET) (ET)
and and
55. 55.
58. 58.
(CAMA) (CAMA)
in in Management Management
54. 54.
57. 57.
an an
elements. elements.
connection connection
for for
the the
and and
translators. translators.
13c(2). 13c(2). general general DIVISION H, SECTION 13b(1) periods of time to set up the switches for a translation system. In a CT office, information proportionately large number of calls. for routing calls is contained on metal cards which are stored in card translators. In an ET office, CONNECTORS information for routing calls is stored in the memory store portion of a SPC complex. 1.09 Connectors are used to connect various common control equipment to each other CARD TRANSLATOR temporarily during the process of setting up a call. This is done by a group of multicontact relays in 1.15 The card translator is an electromechanical the connector which cut through a number of leads device which uses metal cards, electron between circuits. Connectors are equipped with a tubes, phototransistors, and transistor amplifiers chain (or preference) circuit which causes the to perform its functions. Every 4A or 4M CT connector to select equipment elements in a specific office has three or more card translators. order of preference. For instance, a given marker connector will try to select a specific marker as STORED PROGRAM CONTROL STORE its first choice. If the first choice marker is busy, the connector will attempt to select its second 1.16 In an ET office the store utilizes a piggyback choice marker. This procedure will continue until twistor (PBT) memory device for storage an idle marker is selected. of all route translation information. The PBT provides nondestructive readout, and it can be 1. 10 The name of a particular connector is derived altered electrically for temporary storage of from the equipment that is being sought by information or for changes in routing information. the connector. For example, a marker seeking an Store frames are always provided in pairs, the total outgoing frame does so through an outgoing frame number varying with the size of the office and connector. An incoming sender seeking a decoder the services provided and a minimum of five pairs does so through a decoder connector. of store frames required.
4-WIRE TALKING PATH 2. SWITCHING PRINCIPLES 1.11 The 4A and 4M switching systems have 4-wire transmission systems. This means 2.01 The 4A or 4M system is a crossbar system, that two voice paths per trunk are provided through and therefore its basic switching element is the switches, one for each direction of transmission. the crossbar switch. A description of the switch is given in this part since an understanding of its 1.12 The 4-wire transmission system eliminates a operation is essential to an understanding of the need to convert 2-wire trunks to 4-wire and system as a whole. back to 2-wire for voice repeaters and also eliminates the undesirable transmission effects caused by these conversions. CROSSBAR SWITCH
1.13 A conversion from a 4-wire facility to two 2.02 The crossbar switch is an electrically operated wires is required, however, at the originating relay mechanism consisting of 10 horizontal and terminating ends of the toll connection so that paths and either 10 or 20 vertical paths. Any the call can be switched through local automatic horizontal path can be connected to any vertical switching equipment or a local switchboard. These path by the operation of select and hold magnets. are the only conversion points no matter how many The points of connection are known as crosspoints. intermediate switching offices and trunks are used The switch with 10 vertical paths has 100 crosspoints in the toll connection. and is called a 100-point switch. The one with 20 vertical paths has 200 crosspoints and is called a ROUTE TRANSLATION 200-point switch. A partial perspective view of a 200-point crossbar switch is shown in Fig. 1. The 1.14 Route translation in a 4A or 4M office is 4A and 4M offices use 5-wire crossbar switches accomplished in one of two ways; by a which means that each crosspoint makes 5 separate decoder-card translator complex or by an electronic connections.
Page 5
is is
A A
A A
to to
of of
20 20
to to
20 20
on on
the the
are are
bay bay
size size
The The
split split
each each
each each
from from
8,000 8,000
these these
office office
trunk trunk
trunk trunk
24,000 24,000
means means
the the
on on trains. trains.
trunks trunks
typical typical
consist consist
frames frames and and
feasible feasible
bay). bay).
on on
crossbar crossbar
office office
of of
are are
incoming incoming
extension extension
incoming incoming
increased increased
extension extension
extension extension
200-point, 200-point,
by by
multipled multipled of of
A A
numbered numbered
bay), bay),
and and
as as
distributed distributed
switch switch
horizontals horizontals
will will
links) links)
single-train single-train
trunks. trunks.
both both
number number
termination termination
per per
300 300
increased increased
connected connected
40 40
frames. frames.
ten ten
usually usually
200 200
extension extension
corresponding corresponding
terminated terminated
to to
are are
of of
Each Each
given given
maximum maximum
left left
be be
to to
size size
switches switches
outgoing outgoing
is is
switch switch
"A" "A"
incoming incoming
usually usually
are are
the the
incoming incoming
primary primary
offices. offices.
a a
this this
The The
a a
(100 (100
frame frame
Additional Additional
nonsplit, nonsplit,
The The
with with
trunks trunks
the the
switches switches
links). links).
single-train single-train
are are
switches switches
frames frames
is is
horizontals horizontals
7. 7.
secondary secondary
The The
Up Up
on on
secondary secondary
full full
40 40 (or (or
primary primary
extension extension
may may
400 400
a a
to to
split split
this this
horizontals horizontals
outgoing outgoing
for for
a a
a a
10 10
primary primary
The The
capacity capacity
to to
"A" "A"
from from
of of
the the
switches switches
adding adding
Fig. Fig.
in in
in in
multipled multipled
or or
and and
bay). bay).
5-wire, 5-wire,
capacity capacity
the the
trunks trunks
frame. frame.
the the
trunks trunks
of of
links links switches switches
each each
correspondingly correspondingly
and and
has has provided. provided.
up up
by by
incoming incoming
different different
in in equipped equipped switches switches
(or (or
incoming incoming
8,000 8,000
loading loading
office. office.
of of
Generally Generally
incoming incoming
secondary secondary
is is
primary primary
of of
bay, bay,
the the
trunks trunks
bay bay
over over
capacity capacity
same same
the the
multipled multipled
office office
trunks trunks
like-numbered like-numbered
each each
however, however,
primary primary
have have
utilized utilized
the the
and and
links links
to to
provided provided
switches. switches.
switch switch
maximum maximum
bays bays
shown shown
of of
16,000 16,000
terminations. terminations.
on on
arrangement. arrangement.
always always
termination termination
several several
primary primary
incoming incoming
third third
many many feasible. feasible.
the the
practical practical
be be
obtained obtained
of of
the the
are are
incoming incoming
the the
200-point, 200-point,
incoming incoming
extension extension
a a
can can
is is
is is
horizontals horizontals
be be
each each
trunk trunk
on on
frame. frame.
as as
of of
for for
primary primary
are are
the the
the the
verticals verticals
2-train 2-train
are are
not not
pattern pattern
the the
100 100
ten ten
Each Each
bay bay
switches. switches.
200 200
satisfactory satisfactory
The The
horizontals horizontals
from from
with with
trunks trunks
trunks; trunks;
switch switch
single-train single-train
incoming incoming
of of
a a
with with
trunks trunks
secondary secondary
of of
to to
is is
bay bay
cannot cannot
right right
may may
per per
crossbar crossbar
office office
incoming incoming
office office
a a
over over
layout layout
in in bay bay
multipled multipled
A A
standard standard
The The Each Each
of of
has has
and and
maximum maximum
The The
primary primary
fixed fixed
(up (up
overall overall
right right a a
horizontals horizontals
in in
and and
train train
horizontals horizontals
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200 200
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400 400
provide provide
bay. bay.
in in
secondary secondary and and secondary secondary
in in
left left
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secondary secondary
2.11 2.11
the the
verticals verticals
incoming incoming 5-wire, 5-wire,
frame frame
of of
verticals verticals 2.10 2.10 primary primary
spread spread
to to
switches. switches.
2.09 2.09 the the
providing providing
verticals. verticals.
of of bays bays
2-train 2-train
outgoing outgoing
2-train 2-train
per per incoming incoming
per per
terminations terminations group group office office trunks trunks
capacity capacity with with
capacity capacity
terminations terminations
frames frames to to
300 300
first first
The The
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6.) 6.)
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shown shown
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on on
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offices. offices.
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located located
Fig. Fig.
path path
primary primary
provides provides
Fig. Fig.
switches switches
observed observed
outgoing outgoing
switches. switches.
incoming incoming
incoming incoming
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office office
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primary primary
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channels, channels,
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eleventh eleventh
terminated terminated
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made made
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apparatus apparatus
office. office.
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Fig. Fig.
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3.) 3.)
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Frames Frames
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FRAMES FRAMES
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photograph photograph
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established established
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Fig. Fig.
trunks trunks
2.08 2.08
A. A.
Page Page
fan-out fan-out
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2.06 2.06
outgoing outgoing
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crossbar crossbar The The secondary secondary
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require require
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on on
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horozontal horozontal
SECTION SECTION
2.05 2.05
providing providing
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2.04 2.04
making making
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7 7
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Page Page
frames frames
frames frames
several several
frames frames
junctor junctor
13b(1) 13b(1)
pattern pattern
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switches. switches.
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wiring wiring
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secondary secondary
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SECTION SECTION
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provided provided
horizontal horizontal
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bay). bay).
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links) links)
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basis. basis.
originate originate
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junctors, junctors,
Therefore, Therefore,
up up
to to
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spread spread
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frame frame
Frames Frames
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means means
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Connections Connections
for for
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links) links)
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verticals verticals
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interconnect interconnect
provides provides
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and and
office office
employed. employed.
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crossbar crossbar
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Outgoing Outgoing
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"C" "C"
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junctors junctors
feasible. feasible.
the the
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16 16
each each
nonsplit, nonsplit,
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(100 (100
are are
basis, basis, 2.18 2.18
In In
described described given given
arrangement arrangement
horizontals horizontals
2.17 2.17 these these
between between
plan plan
switches switches
links links (or (or
this this 2.15 2.15
bays bays
(Fig. (Fig.
terminate terminate
ten ten
one one frame. frame.
are are
primary primary frames frames
split split
2. 2. switches. switches. 200 200
connections connections
switches switches to to
on on
switch switch
switch switch
B. B.
junctors junctors
which which
the the
group group
junctor junctor
of of
be be
20 20
be be
on on
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all all
OR OR
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400 400
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19R. 19R.
right right
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makes makes
switch switch
frame. frame.
frame. frame.
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spread spread
10 10
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junctor junctor
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In In
primary primary
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as as
switches switches
verticals verticals
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switches; switches;
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full full
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secondary secondary
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frame frame
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right right
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OL OL
connect connect to
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verticals verticals
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(as (as
OR OR
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with with
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to to
of of
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The The
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To To
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left left
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of of
terminating terminating
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switches switches
grouping grouping
use use
(OL (OL
400 400
of of
numbered numbered
frames frames
the the
paired paired
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of of
available. available.
extension extension
each each
secondary secondary
incoming incoming
the the
incoming incoming
group group
secondary secondary
the the
horizontals horizontals
are are
Each Each
designated designated
extension extension
switches. switches.
while while
the the
the the
extension extension
terminations terminations
split split
to to
numbered numbered
bay bay
is is
equipped equipped
the the
of of
primary primary
switches switches
trunk trunk
of of
of of
of of
left left
incoming incoming
right right
switches. switches.
the the
verticals verticals
numbering numbering
of of
junctors junctors
are are be be
9L) 9L)
the the
junctor junctor
the the
outgoing outgoing
switches. switches.
verticals verticals
terminated terminated
bay bay
the the
frame frame
longer longer
numbering numbering
junctors. junctors.
each. each.
junctor junctor
to to
on on
vertical-to-horizontal vertical-to-horizontal
400 400
ends ends switches switches
the the
of of
and and
outgoing outgoing
share share
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frame frame
on on
400 400
bay bay
junctors junctors
may may
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on on
vertical vertical
secondary secondary
nonsplit nonsplit
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left left
frames. frames.
using using
secondary secondary
400 400
the the
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on on
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verticals verticals
The The
on on
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trunk trunk
secondary secondary
is is
vertical vertical
left left
each each
half half
and and
verticals verticals
corresponds corresponds
horizontals horizontals
400 400
to to
to to
secondary secondary
verticals verticals
vertical vertical
designated designated
correspondingly correspondingly
even-numbered even-numbered
even-numbered even-numbered
vertical vertical
and and
these these
The The
and and
extension extension
with with
left left
offices offices
secondary secondary
the the
junctors junctors
even-numbered even-numbered
each each
right right
switches switches
left left
the the
with with each each
links links
correspondingly correspondingly
offices offices
the the
junctor junctor
incoming incoming
secondary secondary
The The
The The
the the
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of of
verticals verticals
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as as
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right right
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20 20
switches switches
requiring requiring
later) later)
bay bay
on on
to to
incoming incoming
terminate terminate
to to
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with with
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of of
split split
left left
of of
horizontal horizontal
Each Each
odd-numbered odd-numbered
one one
connected connected
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designated designated
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not not
existing existing
provides provides
arrangement arrangement
to to
10 10
right right
frame. frame.
secondary secondary
secondary secondary
switches switches
equipped equipped
the the
the the
the the
9R). 9R).
pair pair
13 13
switches switches
the the Similarly, Similarly,
multipled multipled
2.14 2.14
This This
multipled multipled
switches switches
of of
described described
switches switches
available available
number number
a a
outgoing outgoing
Some Some
the the
this this
and and
primary primary
secondary secondary
switch switch
be be
of of every every
described described
left left junctors. junctors.
the the number. number. switches switches
similarly, similarly,
plans plans (OR (OR
arrangement, arrangement, 2. 2.
switches switches
to to
secondary secondary
consists consists terminate terminate
groups groups secondary secondary
designated designated 2.12 2.12
The The
correspondingly correspondingly
of of designated designated SECTION 13b ( 1 ) different offices. Each outgoing frame can there are the smaller each group will be. However, accommodate up to 300 outgoing trunks. there is a minimum number that can be provided in a group in order that the group does not become 2.19 The verticals of each secondary switch are so small as to be inefficient. multipled to the correspondingly numbered verticals of each like numbered switch on each 2.25 When an office grows, junctors have to be secondary switch on the same frame. provided from each incoming frame to all of the new outgoing frames and vice versa. In JUNCTORS order to make room for the added trunks and still preserve the arrangement whereby the incoming 2.20 "A" and "C" links provide the connection trunks from each office are spread over several between the primary and secondary switches incoming frames, and the outgoing trunks to each of individual incoming and outgoing frames. Junctors, office are spread over several outgoing frames, on the other hand, provide the connection from some of the existing trunks have to be reassigned. the secondary switches of each incoming frame to The result is that each incoming frame ends up the primary switches of each outgoing frame in an with about the same number of trunks, the same office. total number of junctors, and about the same amount of traffic. However, the traffic from any 2.21 "A" and "C" links are permanently connected one incoming frame is now spread over more in a fixed pattern which is the same for all outgoing frames, and the number of junctors to incoming or outgoing frames, regardless of the size each outgoing frame can be reduced without of an office. In contrast to this, there are different impairing service. junctor patterns for different sizes of offices. Pattern means the junctor distribution plan. That is, the 2.26 Because the number of junctor groups from incoming and outgoing frame terminations of each each incoming frame or pair of incoming junctor, without regard to whether the junctor is frames is always equal to the number of outgoing run directly or through a distributing frame. frames, there will be different junctor patterns for different sizes of offices. If an office did not 2.22 Incoming trunks are assigned to the incoming grow, then junctors could all be cabled directly frames in such a manner that each frame and would be fixed (for each size office). However, handles about the same amount of traffic. This offices do grow and therefore, provisions must be traffic (from each frame) spreads about equally made for changing the number of junctor groups over all the outgoing frames. Therefore, the which also changes the sizes of the groups. junctors from each incoming frame are divided into as many groups as there are outgoing frame groups. 2.27 Certain junctors are not affected by the Each of these groups has the same number of growth of an office, and these can be junctors. (There are a few minor exceptions in permanently connected from the incoming frames which some groups may have more junctors than to the outgoing frames. The number that can be others.) connected in this manner depends on the number of frames provided in an office. The larger the 2.23 A junctor joins a vertical of an incoming installation, the greater the number of junctors frame secondary switch to a vertical of an that can be connected directly. The remaining outgoing frame primary switch. There are 20 incoming and outgoing frame verticals are used to verticals on each of the ten incoming frame provide the additional number of junctors required secondary switches and a like number on the ten for the particular size of office involved. These outgoing frame primary switches. Therefore, there additional junctors are either cabled directly between is space for connecting a maximum of 200 junctors frames or cross-connected at junctor grouping on each of these frames, assuming that incoming frames. frame secondary extension bays are not furnished. A. Frame Grouping 2.24 For example in 2.23, each incoming frame has room for not more than 200 junctors 2.28 With the basic equipment arrangement, each and there is a· group of junctors to each outgoing incoming frame has access to 200 junctors frame, it follows that the more outgoing frames (or "B" links) which are terminated on the verticals
Page 8
9 9
a a
a a
A A
is is
in in
to to
of of
In In
the the
the the
can can
this this
by by
train train same same
train train
chain chain
office office
terms terms
terms terms
would would
trains trains
to to
rather rather
Page Page
groups groups
link, link,
orderly orderly
control control
frames frames
13b(1) 13b(1)
channel channel
winding winding
frames) frames)
between between
a a
intertoll intertoll
outgoing outgoing
in in
outgoing outgoing
outgoing outgoing
trains trains
outgoing outgoing
outgoing outgoing
in in
the the
shown shown
An An
passed passed
operation operation
maximum maximum
three three
office. office.
The The
With With
completing completing
this this
an an
connections connections
mixture mixture
14 14
(40 (40
is is
the the
the the
At At
a a
the the
trunk trunk
channels. channels.
This This
are are
into into
and and
permit permit
intertoll intertoll
a a
trunk trunk
identified identified
every every
to to
and and
of of
determines determines
as as
toll toll
outgoing outgoing
incoming incoming
common common
train. train.
switching switching
channel channel
These These
SECTION SECTION
incoming incoming
is is
3 3
11.) 11.)
the the
from from
equipment equipment
train. train.
office, office,
12-by-14 12-by-14
switching switching
14 14
a a
combined combined
expressed expressed
called called
and and
trunk. trunk.
groups groups
traffic. traffic.
the the H, H,
of of
possible possible
the the
number number
an an
a a
frames frames
trunk trunk
-
each each
be be
for for
is is
outgoing outgoing
frames. frames.
handle handle
up up
Fig. Fig.
of of
frames frames
closures) closures)
two two
are are
of of
link. link.
frames frames and
location location
incoming incoming
marker marker
in in
for for
incoming incoming
train train
OPERATIONS OPERATIONS
number number
complete complete
set set
train train
idle idle
frame frame
designated designated
called called
of of
identify identify
arrangements arrangements
has has
obtained obtained
the the
(See (See
would would
the the
office office
the the
incoming incoming
between between
outgoing outgoing
to to
frames frames
incoming incoming
DIVISION DIVISION
is is
minimum minimum
trains trains
incoming incoming
These These
two two
an an
completing completing
to to
of of
switching switching
number number
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are are
an an
completing completing
outgoing outgoing
frames frames
outgoing outgoing
frame frame
the the
an an
provided provided
incoming incoming
outgoing outgoing
a a
call, call,
which which
and and
crosspoint crosspoint
signal signal
6 6
separate separate
of of
cabling cabling
each each
the the
toll toll
trains. trains. train train
separate separate
of of
case, case,
both both
number number
12 12
toll toll
and and
and and
from from
combination combination
a a
incoming incoming
an an
The The
SWITCHING SWITCHING
a a
are are
identifies identifies
selects selects
handled. handled.
office. office.
serves serves
(by (by
proceeds proceeds
a a
incoming incoming
and and
size size
location location
the the
and and
the the
each each
Size Size
this this
office office
each each
of of
the the
frames frames OF OF
the the
an an
with with
and and
relationship relationship
is is
12 12
of of
incoming incoming
also also
In In
in in
and and
of of
The The
location location
On On
between between
There There Standard Standard
there there Similarly,
of of
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growth growth
termed termed
office, office,
in in
incoming incoming
and and
it it
traffic traffic
12. 12.
12 12
the the
case case
interconnects interconnects
provided provided
incoming incoming
train. train.
marker. marker.
Office Office
formed formed
20 20
each each
frames) frames)
multifrequency multifrequency
2.37 2.37
Fig. Fig.
the the
equipment equipment
and and trunk, trunk,
time time
called called
the the
2.36 2.36
trunk trunk
trunk. trunk.
channel channel
be be that that
2.35 2.35
per per (6 (6
2.34 2.34
CONTROL CONTROL
indicate indicate
junctor, junctor, and
train. train. in in
of of
and and the the
are are switching switching 2.33 2.33
intertoll intertoll
frames frames
arrangement, arrangement,
than than equipped equipped
office. office. designation designation
2.32 2.32
train train
C. C.
of of
to to
or or
to to
for for
the the are are
the the
toll toll
are are
was was
each each
both both
each each
train train
from from
being being
group group
links) links)
4A 4A
frame frame
trunk, trunk,
of of
traffic traffic to to
groups groups
or or
certain certain
provide provide
junctor junctor
because because
frames frames
frames, frames,
another another
a a
a a
primary primary
on on
required required
Intertoll Intertoll
efficient efficient
incoming incoming
of of
train train
secondary secondary
to to
secondary secondary
groups groups
completing completing
completing completing is is
time, time,
trains trains
"B" "B"
is is
to to
in in
frame frame
appearance. appearance.
verticals verticals
multiplying multiplying
traffic traffic
of of
the the
arrangement arrangement
frame frame
accomplished accomplished
accomplished accomplished
described described
of of
access access
traffic traffic
multipled multipled
toll toll
type type
toll toll
is is
office office
and and
switching switching
one one
(or (or
more more
is is
is is
outgoing outgoing
Similarly, Similarly,
of of
and and
two two
The The
an an
train train
sharing sharing
incoming incoming
as as
trains trains
train train
train train
intertoll intertoll
standard standard
outgoing outgoing
office office
and and
has has
bay bay
one one
At At
the the
are are
10 10
one one
terminate terminate
other other
switching switching
handled handled
any any
bays bays
incoming incoming
train train
one one
bay, bay,
number number
to to
traffic traffic
two two
and and
both both
completing completing
(200) (200)
completing. completing.
even-numbered even-numbered
and and
toll toll
to to
to to
frames frames
frames frames
20 20
the the
only only
Where Where
provide provide
junctors junctors
manner manner
only only
the the
9). 9).
frames. frames.
an an
The The
frames frames
toll toll
toll toll
intertoll intertoll
and and intertoll
switching switching
or or
frame frame
office. office.
switches. switches. on on
traffic traffic
trunks trunks
one one
switching switching
odd-numbered odd-numbered
to to
has has
has has
extension extension
designated designated
so so
A A
200 200
a a
of of
between between
provide provide plans
the the
the the
outgoing outgoing
extension extension
secondary secondary
combined combined
same same
dedicated dedicated
and and
(Fig. (Fig.
both both
junctors junctors
from from
when when
verticals verticals
outgoing outgoing
10.) 10.)
incoming incoming incoming incoming
local local
completing completing
an an
units. units.
from from
a a
of of
of of
connection connection
has has
second second
of of
trunk trunk
which which
interconnecting interconnecting
frames. frames.
of of
a a
the the
the the
by by
higher higher
order order
incoming incoming were were
frames, frames,
was was
the the
8000. 8000.
types types
and and
a a
verticals verticals
toll toll
Trains Trains
Fig. Fig.
incoming incoming
shared shared
of of in in balance. balance.
to to
office office
secondary secondary
for for
junctor junctor
corresponding corresponding
groups groups
In In
primary primary
the the
Each Each
on on
bays bays
both both
handling handling
intertoll intertoll
junctors junctors
two two
However, However, traffic traffic
and and
office office
adding adding
all all
train train
a a
next next
frames. frames.
an an
termed termed
frame frame
control control
between between
permit permit
underloaded, underloaded,
now now
to to
(See (See
is is
the the
of of
trains trains
outgoing outgoing
is is
exceeds exceeds
Grouping Grouping
is is
An An
is is
to to
the the office office
Usually Usually
in in
Grouping Grouping
by by
are are
outgoing outgoing
traffic traffic
of of
provide provide
an an
the the
Switching Switching
office, office,
switches switches
verticals verticals
office, office,
train train
incoming incoming
standard standard
the the
outgoing outgoing
20 20
adding adding
toll toll
traffic. traffic.
B. B.
one one
2.31 2.31
train train
traffic traffic
handled. handled. toll toll
generally generally
switching switching
a a
since since
completing completing
so so
traffic traffic
There There
the the by by
trains trains trunks trunks
provided, provided,
incoming incoming of of
4M 4M
2.30 2.30
switches switches
common common
like-numbered like-numbered interconnected interconnected the the
terminated terminated
extension extension
where where
combined. combined. 20 20 plans plans to to
switches. switches. and and the the
outgoing outgoing
trunking trunking
group. group.
2.29 2.29 (200) (200) junctors junctors
is is
is is
If If
to to
in in
as as
on on
CT CT
the the
the the
the the
are are
the the
the the
and and
this this
that that
they they
time. time.
same same
order order
using using
up up
trunk trunk
trunk trunk
briefly briefly
call call
Should Should
picture picture
by by
over over
has has
a a
are are
through through
channel channel
another another
and and dry
between between
junctors junctors In In
outgoing outgoing
outgoing outgoing
principal principal
available available
is is
combined combined
links links
ELEMENTS ELEMENTS
name name
how how
switching switching
However, However,
a a
found. found.
the the
individual individual
discussion discussion
call call
idle idle
at at
found, found,
junctors junctors
tests, tests,
20 20
idle idle
control control
is is
to to
One One
still still
the the
in in
generally generally
new new
manner manner
irregularities irregularities
and and
high high
the the
in in
equipment equipment
operation operation
see see
links links
this this
illustrates illustrates
overall overall
20 20
be be
seized seized
is is
an an
here. here.
spread spread
this this
made. made.
makes makes
how how
a a
incoming incoming
time. time.
train, train,
is is
of of
only only
these these
to to
the the
in in
If If
left left
any any
second second
an an
element element
is is
trunk. trunk.
set set
outgoing outgoing
trunk trunk
plays plays
the the are are
several several
is is
a a
This This
of of
all all
are are
each each
trunk trunk
than than
channel channel
such such
relationship relationship
channels channels
EQUIPMENT EQUIPMENT
reasons, reasons,
control control
trunk trunk
help help
junctors junctors
to to
20 20
(common (common
cannot cannot
If If
chosen chosen
calls. calls.
purpose purpose
discussed. discussed.
marker marker
each each
in in
incoming incoming
combined combined
call call
trunk. trunk.
of of
test test
20 20
separate separate
trunk trunk
described described
idle idle
the the
office office make make
reason, reason,
assumed assumed
there there
functions functions
more more
feasible. feasible.
of of
a a
will will
describing describing
are are
and and
between between
encounter encounter
the the
office. office.
is is
outgoing outgoing
element element
an an
traffic traffic
junctors junctors
as as
are are
The The
incoming incoming
now now
it it
other other
tests tests
trunk trunk
can can
out out
frame. frame.
this this
different different
functions functions
It It
are are
tests tests
by by
attempt attempt
group group
train, train,
common common
of of
an an
PRINCIPAL PRINCIPAL
not not
given given
outgoing outgoing
calls calls
primary primary
elements elements
and and
and and
a a
and and
circuit circuit
outgoing outgoing
until until
equipment equipment
incoming incoming
a a
because because
an an
For For
do do
same same OF OF
the the
from from
through through
new new
the the
function function
channel channel
point point
the the
frames frames
used. used.
first first
there there
to to
idle idle
incoming incoming
a a
office. office.
the the
marker marker
marker marker
test test
find find
way way
fail, fail,
the the
marker marker
outgoing outgoing
outgoing outgoing
one one typical typical
basic basic
elements, elements,
equipment equipment
safety safety
calls calls
be be
announcement announcement
but but
subgroup subgroup
through through
The The
20 20
fail, fail,
equipment) equipment)
CT CT
and and
can can marker
combined combined
released released
to to
control control
the the
and and
selected selected
The The
incoming incoming
first first
each each
and and
a a
Two Two
found, found,
The The
equipment equipment
same same trunks trunks
For For
The The
Where Where
is is
tests tests
will will
since since
together. together.
outgoing outgoing
each each
The The
these these
also also
connected). connected).
on on
the the
call. call.
FUNCTIONS FUNCTIONS
same same
second second
be be
understand understand
the the
presented presented
competition competition
each each
the the
reorder reorder
different different
group, group,
transmission transmission
different different
3.02 3.02
that that
or or
operation operation
offices offices
work work
3.01 3.01
part part the the
discussed, discussed,
to to processed processed
equipment equipment
them. them. 3. 3.
is is
switching switching
elements elements (not (not
released released
many many
this this
trunk trunk
these these
links links
same same attempt attempt
a a
the the
to to
a a in in
call. call.
2.43 2.43
can can
used used
common common
2.42 2.42
the the
group. group.
and and
a a
to to
a a a a
is is
to to
to to
to to
20 20
an an 9). 9).
on on
via via
the the
the the the the
the the
the the
the the
the the idle idle
("B" ("B"
form form
more more
links links
links. links.
trunk trunk
either either
signal signal
access access
trunk, trunk,
to to
to to
of of
and and
an an
marker marker
for for
to to
decoder decoder
marker, marker,
(Fig. (Fig.
marker, marker,
receives receives
magnet, magnet, between between
primary primary
or or
junctors junctors
use, use,
trunk trunk
operates operates
outgoing outgoing
outgoing outgoing
outgoing outgoing
incoming incoming
with with
minimum minimum
are are
secondary secondary
"A" "A"
associated associated
"A" "A"
trunks trunks
which which
60 60
call call
a a
marker marker Between Between
connects connects
connects connects
that that
extended extended
gains gains
interconnect interconnect
the the
and and
The The
the the
one one
The The
link link
the the can can
The The
junctors junctors
each each 20 20
then then on on
the the
select select
match match
to to
the the
outgoing outgoing
switch. switch.
the the
to to
frame, frame,
frames frames
outgoing outgoing
it it
the the
extended extended
It It
of of
are are
channel channel
marker marker
from from
has has
can can
multipled multipled
or or
and and
an an
links links
of of
the the
incoming incoming
switches switches
to to
which which
from from
office. office.
outgoing outgoing
incoming incoming
particular particular
the the
associated associated
are are
share share
of of
number, number,
or or
through through
link link
number, number,
office office
idle idle
switch switch
the the
an an
multifrequency multifrequency
outgoing outgoing
on on
group group
20 20
and and
30 30
which which
varies varies
trunk trunk
trunk trunk
similar similar
paired paired
primary primary
which which
select select
the the
a a
switch switch
an an
handling handling
secondary secondary
connector. connector.
also also marker
connector. connector.
on on
the the
with with
size size
selected selected
connector. connector.
passed passed
links) links)
and and
to to
on on
primary primary
The The
is, is,
winding winding
marker marker
connector. connector.
switch switch and and
frame frame
desired desired
frame frame
of of
magnet magnet
sharing sharing
sender sender
office, office,
The The
links links
is is
switches switches
block block
trunk trunk
number number
20 20
has has
selects selects
("B" ("B"
the the
the the
frame frame
magnet, magnet,
the the
terminated terminated
channels channels
manner manner
It It
20 20
trunks trunks
That That
incoming incoming
this this
junctors junctors
outgoing outgoing
incoming incoming
outgoing outgoing
associated associated
links links
links. links.
frame frame
a a
marker marker
selection. selection.
select select
to to is is
secondary secondary
a a
to to
ultimate ultimate
junctor, junctor,
of of
a a
called called
trunk, trunk,
switches switches
associated associated
outgoing outgoing
of of
previously previously
these these
trunk trunk
the the
interconnect interconnect
has has
outgoing outgoing
the the
form form
incoming incoming
frame frame
the the
each each
from from
secondary secondary
in in
via via
"C" "C"
for for
"C" "C"
each each
select select
selection. selection.
marker marker
and and
via via
marker marker
the the
to to
between between
to to
incoming incoming
and and
junctors junctors
the the
link, link,
trunk. trunk.
to to
the the
frame. frame.
trunk trunk
trunk trunk
the the
to to
13b(1) 13b(1)
office. office.
the the
20 20
incoming incoming
for for
passed passed
share share
primary primary
the the
Because Because
connector. connector. trunk trunk
While While
the the
to to
The The which which
to to
the the for for
Having Having
magnet magnet
incoming incoming
10 10
number number
links links
frame frame
is is
operates operates
40 40
the the
frame frame
incoming incoming
trunks trunks
marker marker
outgoing outgoing
outgoing outgoing
20 20
outgoing outgoing
obtained obtained
the the
test test
incoming incoming
2.41 2.41 Page Page
links) links)
secondary secondary Each Each
an an
Similarly, Similarly, 20 20 switch switch and and
2.40 2.40 junctors junctors corresponding corresponding
dedicated dedicated
2.39 2.39
these these
smallest smallest of of
outgoing outgoing
outgoing outgoing
then then
and and
and and total total
to to
frame frame is is
marker marker
select select the the terminated, terminated,
the the
frame frame
SECTION SECTION
that that available available
incoming incoming
that that
2.38 2.38 knowing knowing
incoming incoming
the the
connector, connector,
the the
knowing knowing of of DIVISION H, SECTION 13b(1)
A. Call Through a Combined Train-CT Office seize an idle decoder. This decoder immediately activates its home translator which contains all 3.03 A combined train-combined operation office 3-digit code cards. Now the 3-digit code in the uses one switching train to handle both sender is transmitted through the decoder to the intertoll and toll completing traffic. home translator. Here a card which is coded to correspond to these digits, drops. This card contains 3.04 The transmission path and the elements used information for switching the call through the use in setting up the path for a call through a of a 3-digit translation. combined train office are shown in Fig. 13. In this example, it is assumed that the call requires 3. 11 The decoder reads the card, and if so directed 3-digit translation and is switched to a system will check the group busy chain relay circuit which receives multifrequency pulsing. to determine whether an idle trunk appears in the first subgroup or some other subgroup of the 3.05 This call arrives at the 4A or 4M office over selected trunk group. When an idle subgroup is an incoming trunk and leaves over an outgoing indicated, the card corresponding to that subgroup trunk. is read and the decoder then signals a marker connector to seize an idle marker. When a marker 3.06 Each incoming trunk in a single train office is seized, the marker connector signals the decoder has two major appearances. One on the connector to connect the incoming sender to this incoming frame (used for the talking connection), marker. This connection is necessary because the and one on the sender link frame (used for passing marker has to give certain information to the information to the common control equipment). sender, after the decoder has been released.
3.07 Incoming dial pulse CAMA trunks (also 3.12 The marker obtains the trunk block connector incoming dial pulse non-CAMA trunks in location of the outgoing trunks for this call offices not equipped with DP senders) have an from the decoder and the dropped card. Guided appearance on an incoming register link frame, as by this information, the marker selects an outgoing well as the previous appearances. trunk through a trunk block connector.
3.08 The sender link frame is the first used and 3.13 While the marker is selecting the outgoing consists of two sets of crossbar switches. trunk, it is also identifying the frame on The incoming trunks appear on one set of crossbar which the incoming trunk is located. Having switches, and the incoming senders appear on selected the outgoing trunk, the marker then another. identifies the outgoing frame on which the selected outgoing trunk is located. 3.09 As soon as the incoming trunk is seized, it signals a sender link frame to connect an 3.14 The decoder, using information obtained from incoming sender. Then the sender link connector the card translator, also tells the marker signals a controller connector to seize an idle link how the incoming sender should outpulse for this controller. The link controller then tests for, and call, and whether it should outpulse the digits as seizes an idle incoming sender, and closes the received, skip 3- or 6-digits, or convert certain crosspoints between this sender and the incoming digits. When the marker has received all this trunk at the sender link frame. This completes information, it signals the decoder to release. the function of the link controller and controller connector so they can release from the connection 3.15 Now the marker proceeds to set up the and serve other calls. talking path from the incoming trunk to the selected outgoing trunk. Through the outgoing 3. 10 As soon as the incoming sender is attached, frame connector, the marker gains access to the it signals either the outward operator, the outgoing links and to the junctors. After the incoming register (in the case of a dial pulse CAMA outgoing frame has been seized, the marker gains call), or the sender in the calling office, that it is access to the incoming links through the incoming now ready to receive pulses. When the required frame connector. (The incoming frame appearance number of digits has been registered (three to of the incoming trunk has already been identified eight), the sender signals the decoder connector to by the marker via the sender link.) The marker
Page 11 SECTION 13b(l) then tests the incoming and outgoing links and Therefore, the decoder signals its marker connector the junctors to find an idle channel between the to seize an idle intertoll marker. When a marker incoming and the outgoing trunks. It then closes is seized, the marker connector signals the decoder the crosspoints to establish this channel. connector to connect the incoming sender to this marker. 3.16 Now the marker passes the outpulsing information to the sender and releases from 3.22 The marker obtains the locations of the the connection. The sender outpulses the digits outgoing trunks for this call from the decoder through the sender link over the transmission path and the translator card. Guided by this information, to the outgoing trunk and through to the called the marker selects an outgoing intertoll trunk office; then the incoming sender and sender link through an intertoll trunk block connector. The release. marker then identifies the outgoing frame appearance of the selected trunk. 3. 17 Generally the connections in the transmission path are held by the incoming trunk until 3.23 The decoder and the translator card also the calling end disconnects; then all the connections tell the marker how the incoming sender are released. Where timed disconnect applies (on should outpulse, and whether it should outpulse CAMA trunks) or where intercontinental traffic is the digits as received, skip 3- or 6-digits, or convert involved, release of the connection does not depend certain digits. When the marker has received all entirely on calling party disconnect. this information, it signals the decoder to release. From this point on, the call proceeds as previously B. Call Through a Separate Train-CT Office described.
3.18 A separate train-combined operation office 3.24 If the trunks to the called office terminated has two complete switching trains. Each on the outgoing frames of the toll completing train handles both intertoll and toll completing train, then the toll completing train appearance of traffic. Each train has a separate set of incoming the incoming trunk would be used. This call would and outgoing frames, markers, and trunk block proceed, in the same manner, up to the selection connectors. Both trains share the same incoming of a marker. Then a toll completing marker would senders (and outgoing senders, where required), be used and the call would be completed on the sender links, link controllers, decoders, and card toll completing train. If an all-trunks-busy condition translators. is found by a marker and the first alternate route is in a different train, that marker is released and 3.19 An incoming trunk in this office has three the decoder selects a marker associated with the major appearances. Two on the incoming different train. frames (one for each train), and one on the sender link frame. Dial pulse CAMA trunks (and dial pulse non-CAMA trunks in offices not equipped C. Calls Requiring Outgoing Senders with DP senders) have an additional major appearance on the incoming register link frame. 3.25 Outgoing senders are necessary for calls which are switched through a 4A office to 3.20 In the example in Fig. 14, a call comes in offices which receive revertive pulsing (RP) or on an intertoll trunk. It is assumed that panel call indicator (PCI) pulsing. This is because this call is to be switched through the intertoll 4A incoming senders can outpulse only MF and DP train to another toll office that receives MF pulsing. to distant offices. This call is also completed using a 3-digit translation. It proceeds in the same manner as the call just 3.26 Outgoing senders are necessary for calls described in a combined train-combined operation which are switched through a 4M office to office, up to the point where the decoder selects offices which receive dial pulses, revertive, or call a marker. indicator pulses. This is because 4M incoming senders can outpulse MF only to a distant office. 3.21 The decoder reads the card which was dropped on this call and is directed to an 3.27 The outgoing trunks that connect to such outgoing intertoll trunk on the intertoll train. offices have an appearance on outgoing
Page 12 a
of is
by
13
an an
an
the
the
the
the
and
The
look
over
path
path
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This
as
link),
these
trunk
at
for
group)
trunks
for
13b(1)
to
System.
enables
decoder
channel
between
Page
outpulse
directive
outgoing
of
signal
from
idle
incoming
practical.
of
office the
connector
translator
equipment
("B"
unguarded
consists
soon
a
frame,
test
supplied to
is information
the
information
spread
an
of
the
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itself
leads
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ET
uses
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is
OFFiaS
as
to
As
translator
card
available.
sender.
decoder group
block
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establishes
and
are
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SECTION
channel
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how
each
or
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ET
and
Switching
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releasing
the
marks
a
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of
or
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release
to
and
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select
In
directive
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card causes
office
a
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the
and
Toll
the
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by
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office (SPC)
trunk
link).
a
office.
the
go
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to
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to
sender
of
then
SPC
one
CT
seize
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Some
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for
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DIVISION
just
TO
Trunk
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be
15.)
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supplied
establish
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the
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the
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to
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call.
outgoing
outgoing
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frames
seized
from
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to
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having
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in
a
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go
Fig.
two
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is
leads may
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to
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marker
The
in
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to program
Outgoing marker
the
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call
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Marker
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registered
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incoming
order
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A.
4.02
transmission the
an and 4.03
and
information
the of directive trunk. channel. is the trunk
and
Seizing 4.04
as the
idle
trunks In test trunk
(Fig.
4.05
directs containing idle trunk.
busy 4.06
interval, equipment
guarded
to
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ET the
the
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Fig.
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is
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to
the
the
pulsing
4A
pulsing
trunk
type
equipment
on
Equipment
register
the
outgoing
number.
the
outpulsing,
DFMP,
sender
a
incoming
outgoing
the
frames.
outgoing
These
outgoing
called
to
tests
release
of
equipment
ET
in
trunk,
PCI of
sent
called
the
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sender. from
needed.
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through
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signals
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The
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from
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called
ELEMENTS
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as
the
offices.
then
common
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and
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and
through
sender
revertive
necessary Some
intraoffice
the
trunk, an
outgoing
frames.
the
of
pulse
consists
CT
or
release
releases
to
signals
soon
CT
dial
controller
sender
incoming
pulsed
an
discussed
outgoing
call
sender
signal
sender.
to
(DCKP)
it
Incoming
to
the
link office,
controller
parts:
is
is
PCI it
A
revertive
When
As
a
discussion
Most
to
and
calls.
are
the
outpulses
then
link
the
connector
incoming
EQUIPMENT
trunk
incoming
outgoing
4M
outpulse
two
the
link
An sender
3.29
incoming 3.28
to
from requiring
outgoing a
attaches and the or
The
3.30 other telling pulsing
DCKP the trunk, sender. digits
outgoing link trunk and
the
then modification
14.) application. 4. so connection 4.01
peculiar
in
13b(2).
offices SECTION 13b (1)
sent to the distant office, telling it to expect a 4.11 The marker operates the primary select call on this trunk. An example of a guarded trunk magnet associated with the incoming trunk is a 2-way intertoll trunk. being served. This operation signals, to the incoming connector, the number of the primary switch on 4.07 An unguarded trunk does not have the built-in which the incoming trunk appears. The connector busy timing arrangement, and can be selected then presents to the marker the test leads of the by the marker as an idle trunk immediately upon 20 incoming links which are between this primary release from a previous call, and before trunk switch and the 10 secondary switches on the incoming equipment has entirely returned to normal; however, frame. a timing interval provided by the sender causes the seizure signal to the distant office to be delayed 4.12 Similarly, the marker operates the secondary for a predetermined period of time. An example select magnet associated with the seized of an unguarded trunk is a toll connecting trunk outgoing trunk and the secondary switch number to a step-by-step office. is signaled to the outgoing connector. The connector then presents to the marker the test leads of the Identifying the Incoming Frame 20 outgoing links between the secondary switch and the 10 primary switches. 4.08 The marker also has to know the incoming frame number in order to establish the Access to Junctor Group transmission path; therefore, the incoming frame sends its distinctive MF signal (three of eight 4. 13 Before the marker can select the particular frequencies) identifying this number to the marker links to be used in the channel, it must over the select magnet lead associated with the gain access to the junctors. Since the marker incoming trunk. This lead is extended to the knows which incoming and outgoing frames are marker through the sender link, and the decoder being used on this call, it also knows which junctor connector (Fig. 17). This identifying signal is called group is between these frames. The outgoing the frame identification frequency (FIF) signal. frame connector extends to the marker the test leads for 20 junctors in this group.
Identifying the Outgoing Frame Seizing an Idle Channel
4.09 At this stage the marker knows it has an 4.14 The marker now has access to the test leads idle outgoing trunk but it does not know for the 20 incoming links, 20 junctors, and the number of the outgoing frame on which this 20 outgoing links that can be used to switch this trunk appears. It must know this in order to call. establish the transmission path. The outgoing frame number is supplied to the marker by sending 4.15 The marker tests these links and junctors the distinctive MF signal (three of eight frequencies) simultaneously and seizes the first channel assigned to this frame over the select magnet lead that matches. Matching means that, starting with associated with the selected outgoing trunk. This the primary switch which has the incoming trunk signal is extended to the marker through the trunk handling the call, the marker must seize: block connector. (See Fig. 17.) (a) An idle incoming link going to an incoming secondary switch having access to: Testing Incoming and Outgoing Unks (b) An idle junctor to an outgoing primary switch 4. 10 When the incoming and outgoing frames which in turn has access to: have been identified, the marker reaches out to these incoming and outgoing frames by seizing (c) An idle outgoing link to the outgoing their associated connectors. An incoming connector secondary switch with the seized outgoing for the incoming frame and an outgoing connector trunk. for the outgoing frame. Through these connector circuits, the marker gains access to the incoming 4.16 When the marker has selected an idle links, outgoing links, and junctors. channel, the incoming secondary and outgoing
Page 14
a a
in in
in in
to to
in in
15 15
or or
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are are
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For For
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of of
13b(1) 13b(1)
trial trial
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decoder decoder
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given given
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marker, marker,
systems systems
Page Page
to to
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selection selection
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skip skip
decoder decoder
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marker marker
second second
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released released
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SECTION SECTION
intertoll intertoll
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avoid avoid
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connected connected
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sender sender
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DIVISION DIVISION
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decoder decoder
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marker marker
of of
encountered encountered
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made made
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through through
Feature Feature
operation operation
decoder decoder
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In In
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when when
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made. made.
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A A
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selects selects and and
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turn turn channel. channel.
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Second Second
4.21 4.21
the the forward forward
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example, example, the the
next next
code code
switch switch
code code
Second Second which which
4.22 4.22
2 2
to to
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14 14
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For For
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way way
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repeats repeats
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or or
frames) frames)
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magnets magnets
outgoing outgoing
is is
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incoming incoming
subgroup subgroup
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minimum minimum
minimum minimum
junctors). junctors).
pulses pulses
first first
20. 20.
trunk trunk
if if
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previously previously
Therefore, Therefore,
met. met.
completion completion
information information
such such
and and
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switched switched
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step-by-step step-by-step
to to
matches matches
marker marker
of of
some some
divided divided
junctors junctors
the the
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primary primary
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hold hold
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time. time.
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dial dial
and and
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establishes establishes
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25 25
incoming incoming
second second
if if
20 20
the the
outgoing outgoing
The The
to to
that that
to to
operated. operated.
uses uses
test test
translator translator
4 4
than than
are are
group. group.
toward toward
time, time,
call call
8 8
incoming incoming
of of
directive directive
it it
to to
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directs directs
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channel, channel,
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subgroup subgroup
office office
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and, and,
proper proper
case, case,
with with
all all
information information
card card
Sender Sender
one one
incoming incoming
subgroups subgroups
group group
with with
the the
incoming incoming
more more
the the
and and
forward forward
junctors junctors
the the
incoming incoming
magnets magnets
the the
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2 2
and and
junctor junctor
SPC, SPC,
at at
tests tests
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case, case,
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junctor junctor
directed directed
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7 7
other other
switched switched
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links links
has has
20 20
this this
receives receives
switches switches
junctors. junctors.
the the
the the
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train train
at at
into into
5 5
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arranged arranged
channel channel
stored stored
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select select
are are
the the
frames frames
each each
group group
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between between
marker. marker.
Incoming Incoming
example example of
information information
subgroup subgroup
an an
group. group.
to to
group group
that that
outpulse outpulse
call call
of of
in in
this this
another another
marker marker
pulses. pulses.
with with The The
found, found,
decoder decoder
magnets magnets
matches matches
the the
outgoing outgoing
sender sender
to to
for for
establishing establishing
the the
divided divided
trunk. trunk.
there there
path path
one one
In In
be be
immediately immediately
junctors, junctors,
the the
sender sender
each each
the the
channel channel
sender sender
the the
is is
to to
walks walks
is is
stored stored
marker marker
junctor junctor
example, example,
with with
step-by-step step-by-step
subgroup subgroup
by by
use. use.
and and
needs needs
frames. frames.
if if
junctor junctor
in in
incoming incoming
secondary secondary
Another Another
of of
select select
which which
the the
Subgroups Subgroups
the the
junctors junctors
call. call.
size size
For For
(8 (8
The The
sender sender
The The When When
from from
the the
where where
the the
subgroup subgroup
the the
cannot cannot
the the
group group
40 40
subgroup subgroup
incoming incoming
outgoing outgoing
later later
decoder decoder
test. test.
marker marker
remembered remembered
marker marker
the the
5. 5.
multifrequency multifrequency
office, office,
direct direct
office, office,
be be
number number
the the
When When
outgoing outgoing
the the incoming incoming
links links has has
Junctor Junctor
information information associated associated
of of
that that the the
transmission transmission example, example,
the the
available available
4.20 4.20
the the
subgroups: subgroups:
primary primary
operated operated
tests tests the the
of of Information Information
subgroups. subgroups.
4.17 4.17
for for one one
4.19 4.19
other other
each each
4.18 4.18
outgoing outgoing
office office junctor junctor SECTION 13b ( 1)
again selected, and another attempt is made to connector mounted on the incoming frame. It gains complete the call. access to the outgoing links and the junctors through an outgoing connector mounted on the (b) Failure to Match: Second trial is made outgoing frame. (See Fig. 17.) when the marker has seized an outgoing trunk but cannot establish a channel between Home and Mate Operation of Frames the outgoing and incoming trunks. The condition is called failure to match and is usually caused 4.26 The marker has dual access to each incoming by not finding junctors that match with the and outgoing frame for the purpose of testing available links. The procedure for second trial links and junctors. For this purpose the incoming, in this case is exactly the same as the procedures and also the outgoing, frames are paired into home discussed above, except that no trouble record and mate frames. This pairing is as follows: 0 is made. and 1, 2 and 3, etc.
(c) Routing Instructions: If a trunk group 4.27 Dual access is provided by enabling the has been selected by means of information connectors on home and mate frames to obtained from the group busy chain relay circuit, reach both frames of the pair. Therefore, the the marker is given a follow with second trial marker has two ways to reach each frame. Fig. routing instruction. This is done because the 19 shows how this home and mate arrangement selected trunk group may become busy in the works. short interval before the marker can select a trunk, even through the decoder was assured 4.28 The marker is instructed to use either the that at least one trunk was idle. The marker connector on the even numbered frame of a uses this instruction if it finds all the desired pair or the odd numbered frame of the pair. This outgoing trunks busy on first trial. The second instruction is part of the routing information trial is made the same way as described before, furnished the marker by the card translator or except that no trouble record is made. the electronic translator. Each frame has a connector which internally is made up of a set of marker (d) Cancel Follow With Second Trial: As connector relays and a duplicate set of frame part of dynamic overload control, the marker connector relays. One set of the frame connector is arranged to cancel second trial whenever the relays is designated as the home connector and decoders or decoder channels are overloaded due the other set as the mate connector. The incoming to heavy traffic. The traffic control circuit signals trunk may or may not be located on the frame the marker to route follow with second trial-all which the marker has been instructed to use. trunks busy (FST-ATB) attempts to the final When the marker is directed to an even or odd reorder announcement (FRA) trunk group instead numbered frame and the desired trunk is located of requesting a second trial, thereby eliminating on that frame, the home connector is used. If unproductive second trial decoder or decoder the desired trunk is located on the other frame of channel and marker usage. the pair, the mate connector is used. On a second attempt to set up a connection, the even or odd 4.23 The marker frame is shown in Fig. 18. preference instruction to the marker is reversed to permit the use of a different connector on the B. Switching Frames and Their Connectors second attempt. The solid lines of Fig. 19 show home operation and the dashed lines show mate Incoming and Outgoing Frames operation.
4.24 The incoming trunks used in the talking C. Incoming Sender connection are on the incoming frames. Similarly, the outgoing trunks used in the talking 4.29 The major functions of the incoming sender connections appear on the outgoing frames. Two-way are: to signal the office originating the call trunks appear on both frames. to start outpulsing, to register the incoming digits and to outpulse them (according to directions from 4.25 The marker gains access to the incoming the marker) toward a connecting office, an outgoing links for test purposes through an incoming sender, or toward overseas destinations.
Page 16 DIVISION H, SECTION 13b(1)
4.30 There are four types of incoming senders in conjunction with special CAMA equipment. It in use in 4A and 4M toll offices: the is arranged to register up to ten digits of the multifrequency toll sender, the dial pulse toll sender, called number and seven digits of the calling the CAMA sender with an associated incoming dial number. It can outpulse MF, DP, and DCKP in a pulse register, and the overseas sender. In newer 4A office, and MF and DCKP in a 4M office. office installations, a multifrequency toll sender with an associated incoming dial pulse register is 4.34 The overseas sender is designed to receive sometimes used, which eliminates the need for the only multifrequency pulses (two out of six dial pulse toll senders in those offices. Each type frequencies) from the gateway switchboard, from of sender is designed for a specific purpose. (See an overseas connecting office via the overseas Fig. 20 and 21.) facilities with or without time assignment speech interpolation (TASI) equipment, and eventually from 4.31 The multifrequency incoming toll sender is the DDD network. It is arranged to register up designed to receive only multifrequency to 14 digits and can outpulse MF pulses toward pulses (two out of six frequencies). There are properly equipped overseas facilities at ten pulses two types of MF senders; a flat-spring type and a per second or toward the DDD network at seven wire-spring type. Both types are designed to pulses per second. The overseas sender can also receive MF pulses from switchboards equipped with outpulse DP or DCKP in a 4A office, or DCKP in MF keysets or from senders in other offices which a 4M office toward the DDD network. transmit MF pulses. The wire-spring type MF sender is also designed to receive MF pulses from 4.35 All types of incoming senders are arranged an incoming dial pulse register in the same office. to outpulse DCKP pulses when serving calls The MF incoming sender is arranged to register that require outgoing senders. Outgoing senders up to 11 digits and to outpulse up to 14 digits MF, are used when the 4A or 4M Toll Systems switch DP, or DCKP in 4A offices, or MF and DCKP in calls directly to panel offices or to No. 1 Crossbar a 4M office. Systems which require revertive pulsing, or to manual offices equipped with call indicator positions 4.32 The dial pulse incoming toll sender is designed which require PCI pulsing. In a 4M toll office, to receive only dial pulses from switchboards all calls using dial outpulsing require the use of equipped with dials, from step-by-step offices, or an outgoing sender. In such cases, the incoming from senders which transmit dial pulses. It is sender spills forward DCKP pulses to the outgoing arranged to register up to 11 digits and to outpulse sender. Then the outgoing sender converts these up to 14 digits MF, DP, or DCKP in a 4A office, DCKP pulses to revertive, panel call indicator or MF and DCKP in a 4M office. In offices using (PCI), or dial (4M offices only) pulses and spills the wire-spring multifrequency incoming sender them forward to the next office over the outgoing and equipped with incoming registers, the dial pulse trunk. incoming sender is generally not required, although it is sometimes used for economic reasons due to 4.36 Unless otherwise stated, the following the volume of DP traffic. description will cover the MF and DP incoming toll sender only. 4.33 The CAMA incoming sender is designed to receive only multifrequency pulses (two out Seizure of the Incoming Sender of six frequencies), from a local office or from the CAMA dial pulse register. The DP CAMA 4.37 Upon receiving a seizure signal, the incoming trunk terminates on both the register link and trunk signals the sender link frame to connect sender link. On a dial pulse call, the trunk seizes an incoming sender. In an ET office, the sender a CAMA DP register which registers the dialed is not connected to the trunk until the SPC has digits. The register then seizes an idle CAMA acknowledged the receipt of incoming trunk and sender through its appearance on the sender link sender identity and has sent a check signal to the frame and outpulses the registered digits to the link controller. An incoming trunk has access to CAMA sender. MF pulsing between the register only the type of sender with which it is compatible and sender follows the transmission path from the (incoming MF pulsing trunks have access to MF register link, incoming trunk, and sender link to senders, incoming DP pulsing trunks have access the sender. This sender is also arranged to operate to DP senders, incoming CAMA trunks have access
Page 17
is is
is is
A A
(a (a
to to
as as
for for
the the
MF MF
into into
four four
it it
with with
from from from from
links links
Each Each
trunk trunk
trunk trunk
trans
sender sender
signal, signal,
sender sender
trunks trunks
sender sender
sender sender
sender sender
CAMA CAMA
certain certain
sender. sender.
specific specific
on on
for for
senders senders
or or
pattern. pattern.
primary primary
primary primary
primary primary
outgoing outgoing
outgoing outgoing
trunk trunk
trunk trunk
by by
links links
links. links.
a a
100-point 100-point
However, However,
Incoming Incoming
and and
digits, digits,
that that
the the
trunks trunks
the the
25. 25.
this this
trunks trunks
divided divided
appearances appearances
and and
the the
The The
are are
same same
links links
and and
of of
The The
the the
office, office,
removed removed
require require
trunks. trunks.
and and
incoming incoming
of of
appear appear
senders, senders,
are are
overseas overseas
incoming incoming
incoming incoming
outgoing outgoing
has has
vertical vertical
(MF (MF
incoming incoming
6-wire, 6-wire,
handle handle
office, office,
incoming incoming
same same
18-wire 18-wire
incoming incoming
the the
The The
leaving leaving
incoming incoming
or or
be be
outgoing outgoing
24, 24,
switches. switches.
not not
frame, frame,
these these switches switches
to to
the the
to to
the the
connected connected
DP DP
required, required,
Switches Switches
and and
receipt receipt
The The
links. links.
on on
are are
link, link,
The The
do do
switches. switches.
distant distant
an an
of of
The The
frame frame
is is
forward forward
application. application.
same same
any any
incoming incoming
sender sender
sixteen sixteen
office office
are are
"A" "A"
frame, frame,
senders senders
switches switches
must must
with with
incoming incoming
22, 22, 23,
the the
ET ET
Upon Upon
release, release,
One One
the the
horizontals horizontals
vertical vertical
the the
senders. senders.
and and
outgoing outgoing
that that
Primary Primary
between between
spills spills
sender sender
secondary secondary
to to
link link
12-wire 12-wire
arranged arranged
26). 26).
Eight Eight
senders senders
a a
sender sender
senders, senders,
senders senders
in in
offices. offices.
four four
for for
40 40
outpulsing, outpulsing,
trunk. trunk.
releases. releases.
Fig. Fig.
link link
permits permits
on on
the the
is is
distant distant
from from
secondary secondary
in in
are are
contains contains
trunks trunks
of of
are are
outpulsing outpulsing
primary primary
trunk trunk
ET ET
in in
the the
switches switches
Frame Frame
frame, frame,
pulses. pulses.
features features
(Fig. (Fig.
and and
on on
incoming incoming
the the
checks checks
then then
sender sender
the the
sender sender
through through
channel channel
no no
senders). senders).
in in
DP DP
end end
CAMA CAMA
sender sender
to to
eight eight
overseas overseas
frame frame
signal signal
groups, groups,
via via
a a
available available
of of
Link Link
sender sender
attached attached
frame frame
eight eight
incoming incoming
spread spread
the the
and and
a a
the the
and and
outgoing outgoing
switches. switches.
shown shown
senders senders
receive receive
and and
path path
used used
trunks trunks
appear appear
with with and and
incoming incoming
link link
incoming incoming
link link
is is
two two
and and
any any
modification modification
simply simply At At
are are
The The
At At
Where Where are are
The The
Appearances Appearances
for for
to to
circuit circuit
arrangement arrangement
switches switches
secondary secondary
the the
overseas overseas
of of
frame. frame.
DP DP
senders, senders,
incoming incoming
Sender Sender
100 100
outgoing outgoing
"B" "B"
which which
with with
mission mission
horizontals horizontals trunks trunks
type type
MF MF
an an 4.48 4.48
and and
trunks trunks
trunk trunk
senders senders and and Trunk Trunk
established established
reach reach
the the
link link ready ready
sender sender
switches switches
pretranslation pretranslation
circuit, circuit, attached, attached, instructed, instructed,
crossbar crossbar
waits waits
switches switches CAMA CAMA
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Page Page
pulses, pulses,
4.38 4.38
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seizes seizes distant distant
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maximum of 100) appear on both the "A" and the 4.55 Each sender link connector has access to "B" switches in order to give each trunk access two controller connectors. (See A and B in to all the senders. These trunks are connected to Fig. 29.) When an incoming trunk signals for an like numbered horizontals. incoming sender, the sender link connector signals one of the controller connectors (depending on 4.49 Each sender link trunk group has four links which is available or, if both are available, the to the sender switches. The "A" switches one that is preferred at that time) to connect to a provide two of these links, for example, links 0 link controller. and 1 for trunk group 0. The two additional links are provided by the "B" switches. 4.56 Test leads associated with the incoming trunks, the links, and the incoming senders Sender Appearances on Secondary Switches are closed through the sender link and controller connector to the link controller. The link controller 4.50 A maximum of 40 incoming senders have then tests for and selects an idle sender and sender appearances on the horizontals of the link and connects the incoming trunk to the sender. secondary switches. These senders are arranged The controller then releases from the connection in four groups of ten or fewer senders. Two of and is ready to serve other calls. these groups appear on the "A" switches and two on the "B" switches. Each group of 10 senders 4.57 The link controller and connector frame has is terminated on 2 switches (20 horizontals) as space for two link controllers and two shown in Fig. 26. Two horizontals (one on each controller connectors (Fig. 29). Link controllers of the 2 switches) are required for each sender and controller connectors are generally furnished because the 12 leads (18 for CAMA and overseas in groups of four although some offices are arranged senders) from each trunk must be carried all the for six. Each group of 4 controllers and connectors way from the trunk to the sender. serves approximately 16 sender link frames. The number of sender link frames served by one group Attaching the Sender of controllers is not fixed, because traffic requirements vary in different offices. When the capacity of 4.51 When an incoming trunk signals for an the controllers is reached, another group of controllers incoming sender, the sender link connector and connectors is provided. signals a controller connector to seize an idle link controller. The link controller closes the crosspoints 4.58 The sender link access to controller connectors between the incoming trunk on a primary switch and link controllers for a four controller and the incoming sender on a secondary switch. group is shown in Fig. 30.
4.52 When the connection is established between 4.59 There are minor modifications to the link the incoming trunk and the incoming sender, controllers and connectors in an ET office. the sender link connector releases and is ready to The link controller is modified to provide service serve other calls on its sender link frame. bid indications and incoming trunk and sender identification to the SPC. Changes are also made 4.53 MF incoming senders and trunks appear on to enable the link controller to receive check signals MF sender link frames, and DP incoming from the SPC before closing crosspoints between senders and trunks appear on DP sender link trunk and sender. Several connecting leads are frames, as shown in Fig. 20. MF and DP senders added to the controller connector to connect the and trunks do not appear on the same frames. The sender link frame to the peripheral scanner. The sender link frame is shown i1.1Fig. 27. purpose of the leads is to provide the SPC with identification of a sender link frame within a link controller group. E. Link Controller and Connedor F. Trunk Block Connedor 4.54 The link controller operates like a marker. It closes the crosspoints between an incoming 4.60 An outgoing trunk group is spread over at trunk and an idle incoming sender on a sender least two outgoing frames. In order to link frame. (See Fig. 28.) facilitate the checking of these trunks, leads from
Page 19 SECTION 13b(1) each of the outgoing trunks are brought to trunk 4.66 The older block relay frame mounts two block connectors and grouped according to destination. trunk block connectors, while the newer In this way, a marker goes to only one place to block relay frame mounts three trunk block test trunks that may be spread over many outgoing connectors. The marker cut-in relays are also frames. A marker seizes the proper trunk block mounted on this frame (Fig. 31). In two train connector in accordance with the location information offices, each train has its own block relay frames. obtained from a decoder and card translator in a One such frame can serve ten markers. CT office or from a decoder channel and SPC in an ET office. At the trunk block connector the G. Decoder Connector marker tests for and seizes an idle outgoing trunk. 4.67 This connector is used to connect an incoming 4.61 A trunk block connector contains the sender to a decoder or decoder channel, appearances of up to 400 outgoing trunks. and later in the call when a marker is sei~d,to These trunks are arranged in groups of 40, which connect the incoming sender directly to that marker. is the maximum number a marker can test at one time. 4.68 In a CT office, the standard decoder connector frame accommodates four connectors (Fig. 32 4.62 The trunk block connector is made up of and 33), each of which can serve seven incoming multicontact relays and is mounted on a senders. The senders have access to a maximum 2-bay frame called a block relay frame (Fig. 31). of 12 decoders. When more than 12 decoders are It is divided into two parts which are referred to required, the decoders split into 2 groups (A and as the even half-connector (in the left bay) and B) with up to 12 decoders per group. Each sender the odd half-connector (in the right bay). These has access to the decoders in one group only. two half-connectors are exactly alike. The 400 Where decoder grouping is added, the office can trunks which are terminated on the even half-connector be provided with up to 24 decoders. are multipled to corresponding contacts in the odd half-connector. This is done in order to provide 4.69 In most existing offices, a decoder connector duplicate access for the markers to these trunks. frame has been furnished which accommodates three connectors with each connector having access 4.63 The trunks appearing on each half trunk to 18 decoders (nongrouped) and serving 5 senders. block connector are divided into two groups Both 3- and 4-connector frames may be used in a (0 and 1) of 200 trunks each. When a marker decoder group provided the group size does not seizes group 0 in the even half-connector, all other exceed 12 decoders and the 3 connector frames markers are locked out of this connector and out and decoders are arranged for increased capacity. of group 0 on the odd half-connector (since these Each decoder connector (3- or 4-connector frame) are the same trunks). But another marker can can reach all the markers in the office. seize group 1 in the odd half-connector. 4.70 In an ET office, a decoder connector can 4.64 The preference for a particular trunk block serve seven to nine (offices arranged for connector depends on the number of the full increased capacity) incoming senders. Each sender used in the call. A marker connected to sender has access to a maximum of ten decoder an even-numbered sender prefers an even channels in an office. Each decoder connector can half-connector, while a marker connected to an reach all the markers in the office. Both 3- and odd-numbered sender prefers an odd half-connector. 4-connector frames may be used in ET offices with However, if one of the connectors is busy, a marker the qualification that the 3-connector frames must will use the other one, regardless of preference. be provided with increased capacity features (Fig. 32 and 33). 4.65 When a marker has selected an outgoing trunk, it removes the 200-trunk lockout· in 4.71 On an incoming call, the incoming sender the trunk block connector. However, the connector seizes a decoder connector in bidding for a remains attached to the marker until the marker decoder or decoder channel. A chain circuit in is released. This is necessary since the select the seized connector will select an idle decoder or magnet for the outgoing trunk is operated through decoder channel and cut through the necessary the connector. leads by operating its multicontact relays. After
Page 20
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21 21
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Page Page
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4.75 4.75
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4.74 4.74
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4.73 4.73
associated associated
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channel. channel. functions. functions. SECTION 13b(1) two units has trouble (signal output drops below a 4.87 This circuit is used in No. 4 offices to cancel predetermined level). the follow with second trial, all trunks busy (FST-ATB) feature of the marker and to cancel L. Frame Identification Frequency Supply Frame short sender timing. A decoder queue indicator circuit (CT office) or a decoder channel queue 4.82 This frame (Fig. 37) mounts the oscillators, indicator (ET office) senses when all the office amplifiers, and mixing resistors which decoders are busy and causes cancellation of FST-ATB generate the frame identification frequencies used and short sender timing. A sender queue indicator by the marker in identifying incoming and outgoing circuit monitors the ST relays on the sender link link frames. Two frequency supplies, a regular frames. The sender queue is designed to give a and an alternate, are furnished. Control equipment low level output and a high level output, each causes a periodic transfer from one supply to the output dependent on a predetermined number of other to distribute the use and to insure that both ST relays operated. A low level output causes supplies are operating satisfactorily. cancellation of FST-ATB.
M. Traffic Overload Reroute Control (Manual) 4.88 In regional centers, a sender queue low level output may also cause cancellation of 4.83 Manual traffic overload reroute control alternate route traffic being routed through the (TORC) is a special circuit developed for regional center by subtending offices. When the regional center use (Fig. 38). It is used to enable predetermined low level is reached, signals are manual rerouting of regional center to regional sent to the subtending offices to cancel alternate center traffic during periods of traffic congestion. routing through this office. The subtending offices in turn send this office an acknowledgement signal 4.84 The manual transfer of traffic is accomplished showing they have received the cancellation signal. by the operation of control keys on the Manual cancellation of alternate routing can be regional center traffic control circuit for CT offices made at any time without operation of the sender or network control for ET offices. The key queue low. It is also possible to manually cancel arrangement is designed to permit the transfer of an individual route or routes, or to manually exclude all or a portion of the traffic load. Transfer in a individual routes from cancellation. A sender queue CT office is accomplished by altering the number high level output may be used to cause cancellation of decoders used while in an ET office, the transfer of direct route traffic into the regional center. is accomplished on a percentage of traffic basis. When the predetermined high level is reached, signals are automatically sent to the subtending 4.85 All regional centers have direct trunks to offices to cancel direct routes to this office. Provisions all other regional centers. For this reason, for manual cancellation of direct routes are similar any regional center can be the alternate or via to those described for alternate routes. office for all other regional centers. In CT offices, the choice of via routes for a particular regional center is limited to four. In an ET office, any 0. Circuit Busy Announcement Trunks regional center route may be chosen as the via office for any other regional center. While manual 4.89 These trunks are concerned with the overflow TORC is in operation, the traffic eligible for TORC traffic in the office. Overflow trunks (or treatment and overflowing the RC-RC route will circuit busy announcement (CBA) trunks) are automatically be offered to an alternate route associated with a particular trunk group, for through a via office. example, an outgoing intertoll trunk group. These trunks are used when the routing instruction from the card translator or the SPC indicates follow with N. Traffic Control Console overflow (FOF). The marker, having found all the trunks in the regular trunk group busy, would 4.86 The traffic control console houses the controls be directed to test for an idle CBA trunk assigned (keys, switches, and lamps) for operating to the particular trunk group. When the CBA and monitoring circuits on the traffic control frame trunk has been selected and a connection established (Fig. 38) which can manually or automatically with the incoming trunk, either a 120-IPM tone or, activate certain traffic control features. if an announcement has been patched to the trunk,
Page 22 DIVISION H, SECTION 13b{1) a no circuit announcement will be returned to the 4.96 Toll tandem trunks provide toll operators originating operator or customer. with access to the 4A or 4M Toll Switching System. These trunks are one-way trunks which P. Group Busy Chain Relays transmit MF or DP pulses. 1
4.90 The group busy chain relays are located on 4.97 Incoming DDD access trunks are used to the circuits busy announcement trunk frame switch calls from local offices equipped with and are used to indicate the busy/idle status of automatic message accounting (AMA) facilities to a the subgroups in a trunk group. There is one 4A or 4M office. These are one-way incoming relay associated with each subgroup of 40 or fewer trunks which appear on the incoming frames of an trunks, with up to 4 subgroups comprising a trunk office. group. The relay is held operated as long as there is an idle trunk in the subgroup, and it releases 4.98 Incoming CAMA trunks are used to switch when all the trunks become busy. calls from local offices not equipped with AMA facilities to a 4A or 4M office. These are 4.91 In a CT office, chain leads from the group one-way incoming trunks which appear on the busy relays are used by decoders to check incoming frames of an office. the availability of trunks during relay-to-relay or card-to-relay operation. In an ET office, leads from 4.99 Outgoing toll completing trunks are used to the group busy relays are terminated at ferrods carry calls switched from 4A or 4M offices on the peripheral scanner. By scanning these to local and community dial offices. They are ferrods, the SPC can determine the availability of usually connected to incoming intertoll trunks. trunks during translation. The group-busy relays These trunks are one-way outgoing and appear on provide the busy or idle status of trunk groups at the outgoing frames in an office. Toll completing switchboards and at the traffic supervisory rack trunks are arranged for dial pulsing to step-by-step by lamp indications. offices, multifrequency pulsing to crossbar offices, revertive pulsing to panel dial offices, and panel call indicator to manual offices. Q. Trunks and Trunk Relay Equipment 4.100 Miscellaneous trunks have appearances on 4.92 Two general types of trunks, intertoll trunks the outgoing frames only. and toll connecting trunks, carry traffic to and from a No. 4A or 4M Toll Switching System. 4.101 Leave-Word (TX) trunks carry delayed call traffic between the 4A or 4M toll office 4.93 There are several categories of intertoll and and the TX (delayed outward) operators. The term toll connecting trunks. These categories are TX has been replaced with LW (leave word), WH discussed here, together with the functions of (we have party ready), or CB (call back) in traffic trunk relay equipment. documents. Some of the trunks available are:
4.94 Intertoll trunks are trunks which connect 11XX-Regular TX two toll offices. These trunks may be one-way or 2-way trunks and they are classified 1150-Universal TX according to the direction of traffic flow. An intertoll trunk that carries traffic in only one 1151-Conference Operator direction is called a one-way trunk. For example, a trunk that carries outgoing traffic from office 1152-Mobile Service and Marine Operator A to office B is called a one-way outgoing trunk at office A and a one-way incoming trunk at office 1153-Charge Operator B. Two-way intertoll trunks carry traffic in both directions. 1154- Toll Terminal Operator
4.95 Trunks which connect a toll office with local 4.102 Service Trunks: Carry traffic between offices and with switchboards are called toll the 4A or 4M toll office and various assistance connecting trunks. type operators. The trunks may also be referred
Page 23 a
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of
certain
offices, frames.
contain
in
call
trains
to
of
arrive
can
comprise
in
when
when
unwanted composed
In line
suppressor circuit
perform
completion
time
center
toll
office,
it
and
appearances
trunks
be the
trunk
measurements
presented
together. 4
trunks
to
both
that the
used
test
frames
time.
primarily
appearances
trunks.
toll
The
used
ET
would
other
Each
of
echo
outgoing
a
to
decoder
automatic
No.
since
appearance.
may
PAR
this
these
are
interconnecting
is second
then
2-way
trunks
are
up an
320
calls
subgroups
at
the
the
offices
of
routing
have
the
home
instructions
is
two
code.
and
to
the
in
for
machine
and
by
group
translation.
Boston,
and
outgoing
eliminate
into
manual
trunks
and
2-way manual
responder
design,
the
made
stations.
TX
offices,
Both
call,
trunks
call
for
with
incoming
4M
multipled
trunks
to
is
trunks
SPC
for
and
the
and
test
is
trunk
ET incomimg
or
between offices
switching
40 with
appearance
The
3-row, outgoing
Subgroups
on the
increased divided
5-digit
trunk
marker
office.
of
In
4-row.
incoming
group
4A
digits
converter
4M two
is
digits
-One-way
Each
is
Plains
machine
or
is
or
common
One
160
office
are
104-Manual
particular
and
the 108-2-way
accomplished
the
trunks
105-ATMS
a
following
or
4-
107 the
outgoing, of
code.
a
train
complete 4M
is
teletypewriter
size
trunk
4M
a
to
by
three
the
appearance
office.
The
both
4A
White
Junctor
to
Digit-absorbing
or
connect
A
station
group.
On
office,
or
Code
transmission station
Code Code
translation.
test Code
call maximum
train.
groups
Groups
as
appearances
back
allows
center
remaining
4-row
a first
4A
4A
trunks
the
separate
incoming,
given
digit-absorbing
maximum
trunk
4.105
and
4.106 same two
calling calling loop common a
the preceding toll
4.107 the a
of
the the this
9-digit Trunk
example,
4.108 such a
a maximum a
of
trunk
test
4.109
40
in
are
and
used
busy
with
tests
test
return
to
operator
are
to
personnel
test
trunks
or
due
information.
operator
operator
balance
purposes,
operator
of
be
plant
and reporting
encountered
announcement
trunks
signaling
announcement
these
for
operator
CLR
announcement
lack
is
the
testboards
of
originating
codes:
may
route
announcement
and
follows:
code
line
to
or
testing
by
announcement
announcement
operator
supply
the
trouble
as
CAMA
announcement
and
test
information
station
Some
to
and
announcement
announcement
delay
used
connecting
busy code
overload
are
reorder
an
difficulty
(overseas)
following
are
Inward
Rate
Toll
Trunk
Toll
tone
Transfer
The
to
equipment,
-
- measurements
-
-
-
-
the
Misrouted
trunks. Final Reorder No-circuit
Unauthorized 17D
Circuit
Vacant
Sender
trunks
when
call.
trunks
by
-
121
131
101-Communication
141
161
181
191
-
-
- -
-
-
-
102-Milliwatt
103-Supervisory
100-Balance
a
maintenance
noise
and
connect
13b{l)
these
interrupted
Announcement
to
Plant
for
insufficient Code
Code
Code
Code
Code
Code
CBA FRA MCA
ROA
SOA NCA
UCA
VCA
and
Code
Code Code
17C
operator
Code
of
24
accessed
IPM customer
follows:
as
04
SECTION
as
to
4.103
120 or trunks, Some completing
are
4.1
Page to
of
or is
do
be
25
the
the
the
toll
use
one the
the
used
may
give
each
even
same
to
value
gains
of
is one
trunk.
be
loss
certain of
13b(1)
in factors
singing
looping
may
the
are circuits.
received to various intertoll mixture
intertoll
and
Page
for
may
purposes, desirable
levels
the
on
conductor
a
system
low connection
of
an
others
compensate
some
trunks
trunk,
a
transmission
case,
local
there
nonswitching the
these
enough
would not
transmission
gain
a
use trunk loss up which length
with
to
every
reasons,
in of
intertoll
is
connection.
SECTION
very
the
enough
of
trunks
while
good terminals or effect
high
carrier of
it
frequency
testboard
loss,
worst
an
practical
All
a
H,
artificial pads
used
transmission
a
the
adjust
intertoll
(assuming
Also
of
whether
set
making
is
the
the the
to all
high
adjustable trunks trunks
of
several
of
toll moment)
in
are
loss
some
type types,
trunks.
understand
transmission
to
different
Also,
all
voice
makeup
of
in
cable.
by
connecting loss of connections
to
for
for
of
the were the
gain
transmission
on
the
or, use
for
DIVISION
the
use
trunks
(pads
a
levels
trunks at
understand
facilites.
toll
for
transmission various
of
of intertoll
reduced the
loss, trunk.
reduction
transmission
coaxial
practical
gains to
to
echo
spare example,
neglecting
connections
of
bay.
pads
by
connecting
may
significantly
is
the
if
provided
the
long-haul
requirements
no
necessary levels
and
transmission
not
The
set
all
The
different
to
practicable
For
"P" repeaters
and trunks
toll
order
introduce
all
uniformity
intertoll
is
transmission
overall is
appearances
vary
transmission
that,
gain
high-loss
of on
In Most
to of
it had If
trunk
get The
The group
not Regardless are
It individual
A
obtained
facilities
regardless
patching
occur.
is
the
the
a
not
called
to
is undesirable
use
voice-frequency
loss
have
several
microwave
Pads
trunks, 4.114
system. fundamental
4.115
connection. zero subscriber volume connecting same, which this, would
4.116
through
the does or Thus
4.117 use carrier used of varied. affect facilities.
with 4.118 connection. adequate
transmission 4.119
to circuit for 4.120
pads,
is
of
to or of
or
on
an
the
the
idle
are
this
and
will
each
that
may
relay
trunk
trunk
These in
group
circuit
offices
during
HOLD
an in trunks
amount
circuits,
a
and
same overflow
alternate subgroup
direct subgroup group group
group busy/idle
alternate
alternate
alternate
as In
alternate
condition. of
group
categories:
is
group
a
office,
probability of
a
terminating
chain
final
relay insure
trunk
trunks
an
until
the
the
the
present
is
relay
trunks
engineered
This
is
final
determined this
to
to
low
certain groups
test.
groups.
encountering
three lowest
known
via
class
group
a trunk
each
group
a
consumed is
chain in
are
engineering,
less
from
number
These
is
in
for
must
in
chain
group
of
engineered
efficiencies marker engineered
groups.
the trunk
engineered group
the
calls
or
or
trunk.
trunk
traffic
availability
individual
trunk
trunk
no
determine time
group-busy
The
higher
of
an which
overflow
and
no routing
to
the
40
trunks
trunks individual
traffic
all-trunks-busy
result final
trunk
calls.
into
a
idle
and
status
classed
to
marker of
trunk
is
trunk
provided
the trunk to
use
final
of for final
final to
to
of
operation
an
a
group-busy
or
which
routed The
be
The
cannot one
of which
indicates
which group-busy
final groups,
A
office.
and
to
usage
groups
and
route.
final
for
routed
traffic
This
condition.
may trunks
of for
SPC for
offices same
probability
individual
the
least
and
relative
common
respect
busy/idle with
direct
common
number
office.
a
of
subgroup
or engineered
to trunk
individual
at
trunk
high-usage
engineered
the low and
of
Because
to
trunks
direct
common
a sequentially
the is routed
consideration class
most
provided.
a
found.
provided
provided, is common
and
into
The
presented With
groups alternate A trunks
An to of encountering
of
A trunks
group
same
is
translation.
relate in
is
is
is
basis
equipped
block
decoder
number
the
then
traffic the
these
calls
higher
route
monitors preselect
containing is not trunk
the status trunk subgroup routing. method,
circuits. 4.110 high-usage routes.
groups, terms 4.111
of route. route the
economic via
restricted 4.112 route
in alternate not result overflow usually the all-trunks-busy
route
4.113 a
High-usage provided to
of a
in
or
of
the
the
toll the
the for
ex
the
the
The
"T"
and
this
pass
to
path
lead that
data
from
is
(such class
class
to
Some
being
trunk
to
office,
match
in
of
or
circuit
circuits
sender.
by
2-wire).
directly
circuits,
trunk.
(in
the
is
coil.
however, practical
to
incoming
is "R"
signaling
necessary
they
the
particular
4M
office.
sender
signal
trunk trunk of
sender, trunk loop
Equipment
as
a
via
contains
to
against
trunk
signals
or
trunks
the
These
trunk
preceding the
sender.
hybrid
screening
the controller
next
the
trunk
sender
(usually
hybrid
connected
type brought
the
arrangements
connected
start
4A which
incoming
via
also
The
transmission are
the
Other
If
inpulsing
the
the
particular
be
a
is
coil a
trunk
the Control
closely the
to adjustable determined
a
the the
balance
conversion; an
are
whether
to
coil
receive
received
Incoming
supervisory
to
at
to
If
offices overseas)
proper
is
circuits.
as
can
of
to
outgoing
are
that
pulse
circuit
type
for
sends are
or
on
conditions
or basis.
trunks
back
also
frame. to received
translation
the
repeat
informs
sender.
wants
which
for
off-hook),
provide
hybrid
accommodate
Common
informs
incoming sender)
a
without trunk
dial
arrives
this
This
used
trunks
for
are
offices
loop
needed
link
them
to
and
and
to
If
pulses
operation.
is
circuit
switching
by
a
and
the
attach
which
networks
of
operation
information
conversion.
eAMA,
signals
also
employed.
signals call
impedance circuits
trunks
ET
used
circuits
on
call
pass
a require
memory
will
lead
pulses
local
connecting
information switches
Functions
in trunk
type,
a DP,
sender
is
switchboard
circuit.
incoming
the trunk
the class
incoming
appropriate.
line
circuit
frame
these
trunk
4-wire
being
Four-wire networks
trunk
register
4-wire
proper
dialing
trunk
turn
"T"
leads
the
the
the
as
has
the
Trunk for
from
Toll
When
the matching
Information type,
is
DP
to
Balancing
class to operation.
trunks
(MF,
in
link
relay
pass
pass
the
the
to a
passes
dialing
by
trunk
2-wire
"R"
controller
ex
start
traffic
2-wire
obtain
this
permanent
124
trunk
126
which They back outgoing as then
originating
system, Transmission
through switches. 4.
2-wire the 2-wire
A
2-wire trunk balancing
4.125 trunk. the Passing to
a
sender The 4. through
sender proper of used,
then
loop the pulsing and case,
information SPe while between information
for
in
·
a
is
to
of to
or
in
of
an
by
an
an
by
are for
the
are
the
and
the toll
loss
and
to
pads
some these
as
units,
spare
If
trunk
others
trunk.
office.
to
offsets
level
low-
the
intertoll intertoll
patching
added
Low-loss
loss
receiving
receiving They they
Since
upon
"P"
change
the
with
the
trunk
conversion
out.
pad
remains
of
be
a
supervisory
needed
disconnect).
trunk, considerable
transmitting
every
transmission
the
nature removing
and
the
exchanged
high
the
when intertoll
connected
or is with of
a
signaling
trunk, the
compensate in
continuation
when circuit
trunks,
the
pad
and
connection,
accomplished
gain.
trunk,
by
trunk.
a
have
may
repeaters.
4-wire
of each
be
an
a
offices.
by
to
unless
receive is
information
intermediate
and
ends
depending switched
to
such
to
gain
each
both
If gain
"A"
transmission
associated
level
rering
the
signals
which,
not
thus
example,
For
or
but
side
2-
spare
in
include
every
of
fixed
signa:ing
For by
trunks
the transmitting
the
intertoll
uniformity
are
of
and
loss
connecting
spare
(for
control
spare circuits
may
complete
between
suppressors,
trunk,
functions consist functions
line
used
passing
introduced
a
with
the
called
outgoing
introduced trunks.
both
testboard to
and
or
into
layout
toll
to
a
example,
the
in
connected
are
to
the
loss
the
problem,
This
facility.
echo
and brings
providing
functions
trunk trunks
loss and
remains
the
loss
equipment.
supervisory
another
is trunks.
automatically a
provided
circuits
may
by and
(for
transmission
trunk
branches
pads
trunk
pads
at
signaling
office
connecting
is
etc,
trunk
to
the
perform
needed
intertoll
The trunk
provided
the
not
pads
trunk,
connection
the
high-loss
gain
"A"
The
adjusted
13b(1)
of
the
between
trunk
Functions
office a needed.
trunk
pad
of
control
not caused
These high-loss Toll in
the
controlling
Trunk incoming
are
Incoming
signals
are
"P" from
on
necessary,
appear
cable,
Thus,
is
in
Circuits
conductors,
in
are
circuits
suppressor).
is
26
receiving of
transmission
forwarding
transmission
spare
"A"
loss
particular
connecting circuit.
loss
the
connected
calling
SECTION
losses). pads the
and inserted the
the office bay. varies makeup
which in made
change echo
used
4.121 trunks
effect trunks the
intertoll toll way trunk the branches
switchable is the
intertoll the connecting gain Trunk
4.122 a
These functions. and The trunk where Signaling
common Page
4.123 DIVISION H, SECTION 13b(1)
ELEMENTS PECULIAR TO CT OFFICES decoder signals a marker connector to seize an idle marker. The decoder then passes the information A. Decoders and Card Translators it obtains from the card to the marker. The call is then completed. This operation is called a 3-digit 4.127 The decoder, together with the card translation. translator, decodes the code digits registered in the incoming sender into information for switching 4.131 When more than three digits are required the call. This information is obtained from a card to obtain a translation, the first card which the decoder causes to be dropped in the dropped indicates specifically how many digits are card translator. The decoder, like the marker, has required. For example, one card indicates that second trial features. Because these are often four digits are necessary for a certain call; another associated with a card failing to drop, they are card indicates that five digits are required for a discussed later in connection with the card translator. call; another card indicates that six digits are (See Fig. 39.) required for a particular call. In all these cases, the decoder action is the same. The decoder 4. 128 A sender seizes decoder through a decoder restores the card, completes the translation if the connector. The point at which a decoder required number of digits are registered in the is seized differs with the type of sender and the sender, and if not, routes the call to reorder. For number of digits registered in the sender. Non-CAMA senders equipped with the. pretranslation feature flat spring senders equipped with the interchangeable (manufacture discontinued) the decoder signals that area and office code feature seize a decoder when more digits are required, releases from the sender, eight digits or a start signal has been registered, and is available for serving other calls. The action whichever comes first. Non-CAMA flat spring of the decoder being released due to insufficient senders without the interchangeable area and office digits being registered in the sender is called a code feature seize a decoder when six digits or a pretranslation. start signal has been registered. Where a sender is arranged for pretranslation, the sender will seize 4.132 The decoder having dropped the 3-digit a decoder after registering three digits. Overseas card for the first time on a call and receiving and non-CAMA wire-spring MF senders seize a a signal from the incoming sender that it has decoder when the start signal has been registered, sufficient digits registered (four, five, or six) regardless of the number of digits registered. CAMA restores the 3-digit card. A card corresponding to senders seize the decoder when the start signal the registered code is then dropped or the decoder has been received, and the first digit of the calling connects to a foreign area translator and causes a customer identifying number has been registered card to drop in this translator corresponding to in the sender by the CAMA operator or through the registered code. automatic number identification (ANI). 4.133 One important item of information that 4. 129 When a decoder is seized by an incoming the decoder gets from the card and passes sender, it uses the first three digits registered to the marker is the location of the outgoing trunks in that sender to make a 3-digit translation in its that can be used for a particular routing. The home translator. A card drops in the translator locations of a maximum of 40 trunks can be obtained corresponding to these three digits. There may from one card, if there are more than 40 trunks be two cards in the translator for the 3-digit code, for a particular routing, two or more cards are if incoming trunk screening is required and the necessary. (One card is limited to 40 trunks because VO (via only) or NVO (non via only) incoming the marker can test a maximum of 40 trunks at trunk class may be used to select either one of one time.) the two 3-digit cards. This procedure can be considered a starting point for obtaining a translation 4. 134 When there are two or more cards available, on every call. Any further action that the decoder a decoder can operate in one of three takes is determined by the information contained different ways: card-to-card, relay-to-relay, or on this first dropped card as follows. card-to-relay operation. In card-to-card operation, the decoder presents the information from a series 4.130 If the first card indicates that it has enough of cards to a marker and leaves it up to the information to switch the call, then the marker to test for an idle trunk. In relay-to-relay
Page 27 SECTION 13b( 1)
operation, the decoder first checks for idle trunks order of progression (a direct route progressing to and then presents the information from the card successive alternate routes) according to the basic corresponding to the subgroup containing one or switching plan. more idle trunks to the marker. Card-to-relay operation contains certain features of both card-to-card 4.140 Each route relay is associated with a and relay-to-relay operation. maximum of four group busy chain lead circuits, one chain lead circuit for each subgroup Card-to-Card Operation of 40 trunks. The operation of a route relay permits the decoder to check the group busy chain leads 4.135 In this type of operation, the decoder and to determine whether there are idle trunks in advances from one subgroup of 40 trunks any of the subgroups. If there are no idle trunks, to another subgroup of trunks by presenting a the decoder operates the next route relay, etc. series of cards (maximum four) to a marker which then tests for idle trunks in these subgroups. 4.141 When all trunks in all subgroups are busy, 4.136 From a routing instruction on the 3D card the decoder can be arranged to react in (or 6D card) that it drops, the decoder either of two ways. The last subgroup of trunks learns that this is card-to-card operation. It passes can be made to appear to the decoder as having this information on to the marker by sending a an idle trunk. The decoder causes the card hold signal (meaning more cards available) along representing the last subgroup of trunks to be with the location of the 40 trunks on the first card. dropped in the translator, decodes the information read from the card, and seizes a marker. The 4.137 If the marker finds an idle trunk from information pertaining to the last subgroup is the information on this 3D (or 6D) card, presented to the marker, but the marker finds all it signals the decoder to release and proceeds with trunks busy. The marker then uses routing the call. If the . marker finds the first 40 trunks information obtained from the translator card, to busy, it signals this to the decoder. Then the complete the call to a circuit-busy announcement decoder restores the 3D (or 6D) card and, from (CBA) or a no-circuit announcement (NCA) trunk. information supplied by this card, advances to another card, the route advance 1 (RA1) card, 4. 142 The preferred decoder arrangement has which represents additional trunks. In this way, circuit-busy announcement (CBA) trunks a maximum of four cards - a 3D (or 6D) card assigned to the last subgroup. The group busy and three route advance cards (RA1, RA2 and leads associated with the CBA trunks are tested RA3) representing 160 trunks - can be presented at the same time as the regular trunk group busy to the marker. leads are tested. If the regular trunks are all busy but a CBA trunk is idle, the decoder will 4.138 In order to dispose of the call if there are cause the card representing the last subgroup to no idle trunks available, the last card carries be dropped, will decode the information read on a routing instruction which directs the marker to the card, and will seize a marker. The marker connect the call to a reorder or overflow trunk. will test the subgroup for an idle trunk, which in this case, is a CBA trunk. If when the decoder Relay-to-Relay Operation tests the group busy leads, all the regular and CBA trunks are busy, the decoder does not drop 4.139 In relay-to-relay operation, the decoder a card but seizes a marker, the decoder directs first checks for the availability of trunks the marker to test for an idle trunk in a no-circuit in both direct and alternate route trunk groups announcement (NCA) or reorder announcement before it offers information from a card to the (ROA) trunk group. marker. However, the decoder does not actually drop each card but it learns from the 3D or the 6D card which trunks to check. It checks these 4.143 At a primary center, the theoretical maximum trunks by means of a group of route relays known number of trunks that could be checked as an alternate route tree. Each route relay by the decoder in relay-to-relay operation is 960 represents a group of (maximum) 160 trunks. These trunks. These 960 trunks are represented by 24 relays are interconnected to provide a definite cards called alternate route (AR) cards. The decoder
Page 28
a a
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Page Page
an an
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42). 42).
thickness) thickness)
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42.) 42.)
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118 118
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118 118
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DIVISION DIVISION
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capacity capacity
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There There combinations combinations
code. code.
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4.150 4.150
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or or effect effect
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available. available.
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Each Each
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types types
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41.) 41.)
40. 40.
checks checks
by by
drop drop any
Card Card
6D) 6D)
card card
last last
switching switching
idle idle
148 148
relay-type relay-type
Fig. Fig.
translator translator
systems, systems,
4.149 4.149 control control
4. 4. into into
for for
type type
Fig. Fig.
which which
B. B. cards cards
however, however, call call
part) part)
marker. marker.
decoder decoder carries carries
4.147 4.147
and and
an an
tells tells
advance advance
part part
used used
(or (or
the the
presents presents
6D 6D
Card-to-Relay Card-to-Relay
trunk trunk
can can
operation. operation.
cards, cards,
4.146 4.146
4.144 4.144
operation operation 4.145 4.145 SECTION 13b(1) card. At the same time, the transistor amplifiers 4.157 One home translator is directly associated are activated and those opposite the open light with each decoder in the office. (See Fig. tunnels are energized. The resulting amplified 39.) On every call, once a decoder is seized, it signals operate relays which transmit information drops a 3-digit card in its own home translator. to the decoder required to switch the call. Any decoder can handle any call because home translators in the office contain identical sets of 4. 153 Changes in routing information are made cards. by simply replacing cards. New routings are added by inserting new cards. Since the 4A 4.1 58 If a 3-digit card fails to drop, the decoder and 4M systems are located all over the nation, releases and gives a second trial indication the information on changed or added codes will not to the decoder connector. The connector selects reach all control switching points (CSPs) at once. another decoder, and a second attempt is made to Therefore, a CSP in one area may have a call to drop an identical card. If a card drops, the call an office in another area (6-digit translation) which goes to completion and the decoder calls in the is recognized as a vacant code because that office trouble recorder which records the failure to drop code was recently activated and this information a card on the first attempt. However, if a card was not yet recorded. fails to drop on second trial, the decoder assumes that this is a blank code and routes the call to a 4.154 In order to route such calls, principal city VCA trunk. routing (PCR) is employed. A CSP in each area is designated as a principal city CSP. Code 4.159 The home translator does two things: changes or additions that affect offices in any given area are recorded immediately in the principal (a) Provides switching information for calls city CSP for that area. Calls requiring 6-digit requiring 3-digit translation to both home translation, which appear as vacant codes to card and foreign areas. translators outside the NP A, are routed to the principal city CSP. This includes calls to actual (b) Directs decoders to foreign area translators vacant codes (unassigned) as well as those that for calls requiring 4-, 5-, or 6-digit translations. just look like vacant codes. The principal city CSP completes the call or connects it to a vacant code announcement (VCA) trunk. Foreign Area Translator
4.155 There are three types of translators: 4.160 Each foreign area translator contains all the 6-digit cards required for completion (1) Home translators of calls to several particular foreign areas which require 6-digit translations. For example, one (2) Foreign area translators translator may contain all the cards required for three foreign areas, and another for five foreign (3) Emergency translator. areas. Therefore, unlike home translators, the choice of foreign translator used on each call is These translators are basically the same, both from limited. On a particular call, the foreign area physical and electrical characteristics. They differ translators are available to all decoders through only in the cards they contain and in their use. connectors. The card dropped in the home translator directs the decoder to a specific foreign area translator. Home Translator 4.161 These foreign area translators can be 4.156 There is a home translator for each decoder arranged in two ways. They can be paired in the office. Offices where decoders are and nonpaired, or they can all be nonpaired. not grouped could have a maximum of 18, and offices arranged for grouped decoders could have 4.162 Nonpaired translators contain 6-digit cards a maximum of 24. Provision has been made for a for calls which, if routing is not obtained maximum of 19 foreign area translators and one (no card drops, out of service, etc,) at the foreign emergency translator. area translator, can be routed by principal city
Page 30 DIVISION H, SECTION 13b{l)
routing from the home translator without second rest return to their original position. Operated trial. code bars as well as how the card with the corresponding tabs drops are shown in Fig. 45. It 4.163 If there is no principal city routing for can be seen by comparing Fig. 44 and 45 that the certain calls, then some of the foreign area card with the corresponding tabs drops down to translators in an office are paired. Both members the operated code bars. Since each card in one of a pair of translators have identical sets of cards. card translator has a different combination of code tabs, only one card drops at a time. 4.164 If a 6-digit card fails to drop for any reason in one paired translator, the decoder releases 4.170 There are two holes in each card (Fig. 42) and gives the decoder connector a second trial called index holes (IND1 and IND2), which indication. This connector selects another decoder are used to indicate whether the cards are in the which goes to the other translator in the pair and proper position during both the operated and attempts to drop a duplicate 6D card. If the card unoperated periods. When the card translator is drops, the call goes to completion and the decoder normal (unoperated), the light goes through all calls in the trouble recorder which records the the holes on the card, including these IND1 and failure of the paired translator to drop a card on IND2 holes. If a card is dislocated and the light the first attempt. However, if a card fails to drop through either or both of the IND1 and IND2 holes on second trial, the decoder assumes that this is a is cut off, the card translator sounds an alarm. blank code and routes the call to a vacant code announcement trunk. 4.171 The IND1 and IND2 holes are never 4.165 The number of paired and non paired foreign enlarged; therefore when a card drops, area translators depends on the needs of the light channels through these holes are always an individual office. Each translator is numbered, cut off. The cutting off of these light channels starting with 01 and going up to 19. signals the decoder that a card is in position to be read; however, if a card does not drop properly, Emergency Translator and the light channels through either or both the IND1 and IND2 holes are open, the decoder will 4.166 One emergency translator is furnished in trouble record. each office. This translator can, when necessary, replace any translator in the office. Reading the Dropped Card 4.167 Whenever a translator has to be taken out of service, its cards are transferred to the emergency translator. 4.172 When a card drops, there is a shutter effect on all the light channels except the 4.168 In the following discussion of the basic ones in line with the enlarged holes on the dropped functions of the card translator, it is not card. A dropped card with light channels going necessary to distinguish between these three types. through the enlarged holes and cut off from the other holes is shown in Fig. 43. When the card Dropping a Card is in a position to be read, the amplifier and detector circuits associated with the phototransistors 4.169 In the translator, the stack of cards rests are energized and they read the coded light channels. on 40 code bars which correspond to the The translation information is then obtained by 40 card tabs. Thirty-eight of the card tabs are the decoder and the marker. (The gate shown in coded but the outside two are never coded. A Fig. 43 is the mounting for the phototransistors.) card resting on these code bars when the card translator is unoperated is shown in Fig. 44. When the decoder connects to its card translator, it 4.173 When a card translator is unoperated, the operates certain code bars in the card translator light shines through all the holes in the to drop the desired card. The two outside (card card. When a translator is operated and a card support) bars are operated after the other code is dropped, light passes only through the enlarged bars have been set. One card drops, while all the holes on the dropped card.
Page 31 a
is
to
to at
is
of
is
be
by
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into
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tabs.
card.
42)
of
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can
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lamp
bottom
light card
6-digit,
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swinging
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translator
amplifiers,
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information information
front
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divided
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cabinet.
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46).
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SECTION
Mechanical
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assist the
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motion. operates,
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the pull The bars. bars magnets
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to again 4.177 pull-up
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remain
bars. 4.178 to card Page To a
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33
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4.190
location call.
block
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4.191
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42
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In
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traffic. are
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201
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example,
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identify
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and
4.186
combination
while
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coding
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4.187
position. 4 different
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can
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holes NVO on according when
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SIGNIFICANCE
trunk.
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checking
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and
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digit
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area. route
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traffic again.
translator of
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code. area.
through
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number number
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code.
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decoder
come
area
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through
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No
Foreign
location Outgoing Through Outgoing INW Outgoing Trunk
Outgoing Class Index properly. Foreign 0 Home Class
Alternate Terminal Code count No Routing Code Cancel Alternate Area Alternate Alternate
in Continuity in Code
Code Code Code
DESIGNATION
CA4-5-6
NCA TP0-2 TC TPC lTC TS0-2 BU0-7 IT INDl-2 BT0-1
BU0-7 CLT0-1 CLU0-7 RI0-7 HB CCU0-7 CDLC AFA WST-, CCT0-7 NAC ART0-7 AC ARU0-7 CCHN AHA CDC0-7
CCUN CCH0-7 CCTN CDC0-7
PEG
1
AND
ROUTE BOX
CONTROL
TRAFFIC
GROUP
SEPARATION
INSTRUC
SCREENING
AREA
GROUP
AND
13b(1)
DIGIT
CONTROL CODE
CONVERSION
APPEARANCE
COUNT COUNT
ATS
ATS
34
PRETRANSLATION
OGT THROUGH
TRUNK
TRAFFIC PEG TANSLATOR
PEG COUNT NUMBER INDEX BAND
INW
OVERFLOW CLASS
INW
ROUTING CONTINUITY AREA ALTERNATE TIONS
DIGIT CODE
SECTION
Page
C C
to to
35 35
be be
by by
RT RT
CR CR
the the
The The
this this
key) key)
that that
keys keys
route route
a a
office office
trunk trunk
group group
traffic traffic
routed routed
located located
calls calls
13b(1) 13b(1)
for for
through through
Page Page
office office
advance advance
9. 9.
of of
operated operated
CR CR
RT RT
alternate alternate
alternate alternate
would would
alternate alternate
alternate alternate
2. 2.
operating operating
from from
Calls Calls
are are
to to
affected affected
the the
of of
direct direct
reach reach
trunk trunk
the the
card-to-relay card-to-relay
operated operated
CR-) CR-)
route). route).
(or (or
the the
route route
first first
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a a
however. however.
a a
traffic traffic
to to
alternate alternate
20 20
by by
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traffic traffic
group group
denies denies
by by SECTION SECTION
in in
the the
through through
keys. keys.
to to
traffic traffic
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key key
is is
has has
routes routes
through through
divert divert
traffic traffic
an an
operation operation
9. 9.
deny deny
0 0
control control
uses uses
key key
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H, H,
0 0
to to
limit limit
A A
9. 9.
by by
route route
CR CR
as as
denying denying
trunk trunk
RT RT
to to
rack rack
relay-to-relay relay-to-relay
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to to
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The The
access access
(alternate (alternate
and and
C C
digit digit
C C
this this
by by
or or
would would
would would
traffic traffic
digit digit
under under routed routed
1. 1.
an an
B B
office office
100 100
the the
to to
overflow overflow
represented represented
access access
to to
in in
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through through
alternate alternate
RT RT
of of
deny deny
keys keys
or or
of of
through through
and and DIVISION DIVISION
are are
0 0
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routing routing
9. 9.
units units
tens tens
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relay-to-relay relay-to-relay
or or
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choice choice
traffic traffic
0 0
route. route.
alternate alternate
to to
B B
Direct Direct
0 0
Direct Direct
office office
the the
route route
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necessary necessary
represented represented
may may
to to
the the
an an
denied denied
digit digit
supervisory supervisory
cancels cancels
to to
example, example,
of of
route route
relays relays
affected affected
digit digit
SIGNIFICANCE SIGNIFICANCE
digit digit
control control
office office
route route
digit digit
keys keys
as as
office office
operation operation
be be
access access
number number
number number
an an through through
office office
be be
maximum maximum
with with
route route
trunk. trunk.
alternate alternate
routing. routing.
overflow overflow
to to
routes. routes.
C C
0 0
units units
thus thus
trunk. trunk.
tens tens
to to
digits. digits. alternate alternate
CR CR
in in
A A
digits. digits.
becomes becomes
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group group
units units
routing routing
traffic traffic
The The
routing. routing.
next next
can can
particular particular
not not
C C
traffic traffic
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to to
transfer transfer
received}. received}.
the the
NCA NCA
and and
denied denied
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operation operation
denies denies
code code calls calls
cancel cancel
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key. key.
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code code
office office
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a a
as as
CAMA CAMA
3 3
6 6
number number
connector connector
connector connector
number number
number number
an an
relay-to-relay relay-to-relay
would would
operated operated
associated associated
B. B.
office office to to
for for
are are
to to
the the 4.198 4.198
CR CR key key
route route while while
CAMA CAMA
routes routes alternate alternate
particular particular
room. room.
route route
4.197 4.197
route route on on
for for
to to
key key
will will
number number
tens tens
first first
first first
(send (send
start start
block block
end end
start start
end end
block block
block block
a a
if if
the the
the the
in in
for for
47) 47)
the the
the the
can can
skip skip
two two
used used
Each Each
home home
office office
which which
frame frame
frame frame
of of
of of
Group Group
Group Group
Group Group
Trunk Trunk
is is
Group Group
Trunk Trunk
Skip Skip
Trunk Trunk
Skip Skip
No No
Unauthorized Unauthorized
serving serving
Authorized Authorized
card, card,
specific specific
specific specific
(Fig. (Fig.
busy busy
an an
a a
a a
connector connector
any any
decoder decoder
a a
emergency emergency
frame frame
connects connects
plan plan
is is
of of
each each
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for for
for for
control control
decoders. decoders.
frame frame
the the
drop drop
facilities facilities
each each
addition addition
This This
Frame Frame
one one
translator. translator.
connector connector
18 18
reach reach
decoders. decoders.
to to
of of
DESIGNATION DESIGNATION
or or
routing routing
TB0-7 TB0-7
GEU0-7 GEU0-7
GST0-1 GST0-1
GET0-1 GET0-1
GSU0-7 GSU0-7
and and
TCU0-7 TCU0-7
TCT0-2 TCT0-2
SK6 SK6
NSK NSK
SK3 SK3
UCR UCR
ACR ACR
The The
associated associated
24 24
transfer transfer
connector connector
traffic traffic
supplementary supplementary
area area
over over
48). 48).
access. access.
translator translator
an an
connector connector
connectors, connectors,
Control Control
must must
necessary necessary
A A
relays relays
substituted substituted
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is is
route route
translator translator
has has
route route
turn. turn.
(Fig. (Fig.
be be
two two
have have
decoder decoder
using using
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area area
foreign foreign
alternate alternate
translators translators
translator translator
centralized centralized
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route route
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decoders. decoders.
its its
maximum maximum
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translator translator
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decoder decoder
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and and
area area
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decoders. decoders.
frames frames
ten ten
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the the
offices offices
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provides provides
wait wait
SPILLING SPILLING
Route Route
foreign foreign
decoders decoders
alternate alternate
of of
translator translator
GROUP GROUP
18 18
emergency emergency
in in
Translator Translator
translator translator
with with
connect connect
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foreign foreign
BLOCK BLOCK
BLOCK BLOCK
also also
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START START
with with
END END
all all
to to
ROUTING ROUTING
must must
provides provides
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to to
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A A
accommodates accommodates
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decoder decoder
foreign foreign
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area area
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up up
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foreign foreign
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required required
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maximum maximum
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GROUP GROUP
TRUNK TRUNK
trary trary
GROUP GROUP
CONNECTOR CONNECTOR
TRUNK TRUNK
CONTROL CONTROL
VARIABLE VARIABLE
E. E.
office. office.
CAMA CAMA
accordance accordance
interconnecting interconnecting
4.196 4.196
D. D.
serve serve
is is
translator, translator,
or or
4.195 4.195
equipped equipped
a a supplementary supplementary a a
to to pair pair
decoder decoder
4.194 4.194
foreign foreign 4.193 4.193 4.192 4.192 C. C.
a a
is is
be be
the the
put put
(b), (b),
and and
and and
test test
unit unit
of of
busy busy
to to
lamps lamps
frame frame
49) 49)
circuit circuit
to to
located located
set set
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circuits, circuits,
test test
calls calls
test test
test test
place place
translators, translators,
circuit circuit
test test
(Fig. (Fig.
used used
are: are:
maintenance maintenance
5.08 5.08
circuits: circuits:
alarm alarm
miscellaneous miscellaneous
in in
miscellaneous miscellaneous
test test
trouble. trouble.
toll toll
channels channels
circuits circuits
for for
installation. installation.
of of
in in
recorder recorder
card card
trunk trunk
on on
are are
operations operations
two two
The The
transmission transmission
the the
translator translator
the the
the the
4M 4M
frame frame
frame frame
perforator perforator
jacks, jacks,
in in
by by
service service
of of
listed listed
frame. frame.
in in
or or
decoder decoder
frequency frequency
card card
location location
EQUIPMENT EQUIPMENT
the the
which which
in in
trouble trouble
intertoll intertoll
records records
set set
markers, markers,
circuit. circuit.
manual manual
summary summary
4A 4A
of of
and and
a a
testboard testboard
encountering encountering
automatic automatic
recorder recorder
and and
test test
test test
included included
recorder recorder
is is
card card
Frame Frame
jacks jacks
located located
central central
functions functions
recorder recorder
each each
toll toll
performed performed
make-busy make-busy
mounts mounts
functions functions
of of
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calls calls
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outgoing outgoing
are are
control control
test test
decoders, decoders,
bays bays
in in
the the
translator translator
are are
trunk trunk
17D 17D
of of
trouble trouble
identification identification
the the
also also
trouble trouble
Recorder Recorder
frame frame
MAINTENANCE MAINTENANCE
controller controller
controllers, controllers,
(c) (c)
associated associated
lamps, lamps,
or or
following following
and and
primary primary
of of
is is
the the
service service
permit permit
room. room.
translator. translator.
link link
for for trouble
One One
provided provided
All All
and and jacks
and and
Electrical Electrical
and and
Production Production
to to
on on
link link
This This
Automatic Automatic
Frame Frame on on
and and
Patching Patching Plug-in Plug-in
The The
Testing Testing
The The
17C 17C
components components
keys, keys,
emergency emergency
Trouble Trouble
the the
(c) (c)
performed. performed.
(a) (a)
(b) (b)
circuit. circuit.
(j) (j)
(c) (c)
(i) (i)
(b) (b)
(a) (a)
5.10 5.10
5.11 5.11
lamps lamps
and and 5.09 5.09
regular regular
and and
circuit circuit
decoder-marker decoder-marker
the the
indicating indicating
5.08 5.08
SWITCHING SWITCHING
5.07 5.07 A. A.
terminal terminal
a a
in in
all all
4A 4A
the the
are are
test test
two two
and and
line line
with with
in in
were were
of of
trunk trunk
in in
center: center:
center. center.
trouble trouble
in in
the the
(AOTT) (AOTT)
test test
terminal terminal
incoming incoming
controller controller
toll toll
switching switching
Switching Switching
trunk trunk
center. center.
trunks trunks
and and
description description
for for
maintenance maintenance
maintenance maintenance
which which
activities activities
maintenance maintenance
toll toll
or or
of of
and and
frame frame
the the
Toll Toll
frame frame
the the
the the
located located
line line
circuit, circuit,
crossbar crossbar system
the the
the the
room room
description description
connecting connecting
(includes (includes
of of
test test
of of
test test
4M 4M
concentrated concentrated
frame frame
intertoll intertoll
maintenance maintenance
toll toll
of of
in in
test test
system system
maintenance maintenance
test test
frame frame
communicating communicating are are
provided provided
toll toll
with with
toll toll
frame frame
facilities facilities
toll toll
for for
the the
and and
a a
test test
maintenance maintenance
and and
for for
the the
trunk trunk
switchroom. switchroom.
frame frame
frame frame
in in
test test
the the
of of
trunk trunk
terminal terminal
4A 4A
test test
highlight highlight
along along
used used
summary summary
coordination coordination
the the
a a
4M 4M
a a
provided provided
generally generally
switching switching
for for
facilities facilities
facilities facilities
intercommunicating intercommunicating
in in
called called
is is
and and
maintenance maintenance
FEATURES FEATURES
or or
register register
outgoing outgoing
located located
is is
(AOCT) (AOCT)
coordination coordination
required required
areas: areas:
outgoing outgoing
sender sender
outgoing, outgoing,
4M 4M
also also
close close
sender sender
gives gives
recorder recorder
decoder-marker decoder-marker
and and
4A 4A
test test
facilities facilities
outgoing outgoing
maintenance maintenance
make-busy make-busy
floor floor
or or
and and
with with
are are
center, center,
Therefore, Therefore,
part part
frame frame
maintenance maintenance
the the
4A 4A
toll toll
following following
the the
permit permit
Trunks Trunks
the the
room room
13b(1) 13b(1)
specifically specifically
included. included.
of of
circuit) circuit)
maintenance maintenance
systems, systems,
Automatic Automatic
set set
Automatic Automatic
Incoming, Incoming,
Outgoing Outgoing
Manual Manual
recorder, recorder,
Sender Sender
test test
Incoming Incoming
sender sender
Trouble Trouble
the the
To To
components components
The The
The The
equipment equipment
Maintenance Maintenance
of of
requires requires
equipment equipment
The The
This This
and and
points points
36 36
MAINTENANCE MAINTENANCE
also also
4M 4M
the the
(h) (h)
(g) (g)
(f) (f)
(e) (e) (a) (a)
(d) (d)
(c) (c)
(b) (b)
test test
Page Page
5.06 5.06
5.05 5.05
terminal terminal
room, room, provided. provided.
Systems. Systems. 5.04 5.04
section section
maintenance maintenance
maintenance maintenance
other other
5.03 5.03
designed designed
5.01 5.01
5. 5.
5.02 5.02
SECTION SECTION
are are
and and
of of equipment. equipment.
a a
is is
at at in in
at at
30 30
37 37
or or
50, 50,
the the
the the
five five
on on
units units
time, time,
kinds kinds
might might
of of
record record
trunks trunks
sender sender
stages, stages,
of of
record. record.
trouble trouble
failure. failure.
making making
13b(1) 13b(1)
decoder decoder
trouble trouble
trouble. trouble.
channel channel
Fig. Fig.
marker. marker.
or or
Page Page
decoder, decoder,
channel, channel,
initiated initiated
a a
about about
called called
record record
connected connected
switching switching
continuity continuity
seized seized
in in
by by
out out
rate rate
the the
the the
the the
is is
decoder decoder
be be
operated operated records. records.
be be
the the
the the
call call
these these
the the
typical typical
holding holding
same same
the the
progressed progressed
in in
-
and and
-
trouble trouble
number number
to to
of of
outgoing outgoing
two two
decoder-marker decoder-marker
this this
receive receive
decoder decoder
will will
equipment equipment
the the
of of
SECTION SECTION
which which
may may
decoder decoder
shown shown
were were
trouble trouble
the the
leads. leads.
incoming incoming
to to
perforate perforate
caused caused
the the
or or
marker marker
and and
had had
any any
the the
the the
when when
trouble trouble
H, H,
service service
a a
indicated indicated
or or
marker marker
on on
a a
of of
is is
can can
the the
following following
position position
example example
major major
record record
example example
that that
After After
or or
circuit circuit
ready ready
which which
however, however,
identity identity
when when
in in
certain certain
on on
record. record.
with with
during during controller, controller,
the the
and and
marker, marker,
are are cards
transmitted transmitted
noted, noted,
the the
decoder decoder
(for (for
(for (for
This This
marker marker
equipment equipment
the the
incoming incoming
initiates initiates
on on
decoder decoder
DIVISION DIVISION
records records
cross-detecting cross-detecting
is is
The The
failure failure
controller controller
of of
of of
link link
on on
relays relays
trouble trouble
trouble trouble
made made
the the
recorder recorder
call call
decoder decoder
the the
of of
of of
seized seized
blank blank
record record
always always
minute; minute;
the the
trouble trouble
of of
is is
released released
is is
perforator, perforator,
includes includes
and and
make make
the the
etc). etc).
of of
control control
the the
51. 51.
relay relay
any any
is is
etc). etc).
channel, channel,
recorder recorder
failure. failure.
always always
perforated perforated
per per
the the
far far
which which
stage. stage.
of of
has has
on on
of of
identity identity
trouble trouble
identity identity
kind kind
example, example,
results results
call call
previously previously
channel, channel,
between between
Fig. Fig.
recorded recorded
trouble trouble
which which
card card
excessive excessive
block block
issues issues
repetition repetition
time. time.
marker. marker.
card card
this this
frame, frame,
in in
marker marker
circuit, circuit,
sender, sender,
A A
cards cards
recorder recorder
tests tests marker marker
The The
For For
used used
A A
Marker-Stage: Marker-Stage: recorder recorder
The The
As As
trouble trouble How How
The The
test test The The
DCH DCH
The The
in in
time time
common common
decoder decoder
also also
decoder decoder
a a
record record
to to
two two
the the
complete complete
the the
information. information.
and and
trunk trunk a a
(b) (b)
(e) (e) (c) (c) is is
check, check,
(a) (a)
(d) (d)
that that
the the
test test
decoder decoder
channel channel
link link
or or
result result
due due
5.23 5.23
5.24 5.24
and and
shown shown
to to
5.20 5.20
5.22 5.22
during during
by by The The
other other
to to
5.21 5.21
The The
of of
a a
is is
is is
of of
at at
to to
on on
for for
the the
the the
the the
the the
Test Test
and and
also also
call. call.
card card
card card
card card
both both
by by
would would
timing timing
a a
cannot cannot
only): only):
control control
decoder decoder control control
on on
trouble trouble
seized, seized,
operate operate
operate operate
decoder decoder
leads leads
recorder recorder
point point
are are
and and
both both
markers, markers,
one one
incoming incoming
time time
occurred. occurred.
recorder
functions. functions.
a a
located located
on on
equipment equipment
because because
is is
to to
recorder recorder
circuit circuit
with with
recorder recorder
trouble, trouble,
may may
of of
the the
or or
(CT (CT
the the
the the
story story
intervals intervals
Calls Calls
covers covers
frames frames
decoder decoder
perforate perforate
this this
perforates perforates
which which
extend extend
circuits circuits
to to
connector, connector,
common common
trouble trouble
common common
failure failure
records records
summoned summoned
same same
to to
encounter encounter
to to
of of
perforate perforate
series series
The The
relays relays
seizure seizure
channels, channels,
engaged engaged
trouble trouble
stage stage
exceeded exceeded
latter latter
the the
be be
the the
the the
equipped equipped
recorder. recorder.
Service Service
leads leads
trouble trouble
these these
recorder recorder
controller. controller.
During During
which which
Stage Stage
or or
card card
of of
mechanism, mechanism,
The The
frame, frame,
during during
can can
complete complete
used used
by by
controller, controller,
are are
in in
are are
on on
decoder decoder
are are
involved. involved.
recorder. recorder.
which which
This This
frame frame
connecting connecting
stages stages
reasonable reasonable
It It
a a
may may
encountering encountering
the the
is is
link link
These These
single single
where where
up up
time time
is is
sender, sender,
decoder decoder
addition, addition,
link link
trouble trouble
during during
A A
calls. calls.
the the
calls calls
desired, desired,
on on
relays relays
trouble trouble
a a
connected. connected.
Stage: Stage:
that that
set set
In In
recorder recorder
interval interval
functions functions
circuit circuit
calls calls
recorder recorder
Records Records
marker marker
sender, sender,
recorder. recorder.
trouble trouble
the the
various various
is is
from from
Stage: Stage:
by by
intervals intervals
frame. frame.
permit permit
so so
incoming incoming
failure, failure,
test test
controllers controllers
recorder recorder
the the
the the
the the
recorded. recorded.
actions actions
the the
the the
are are
Card Card
When When
being being
incoming incoming
the the
mechanism mechanism
is is
service service
decoders, decoders,
controller controller
on on
certain certain
by by
trouble-indicating trouble-indicating
trouble trouble
and and
be be
marker, marker,
link link
trouble trouble
circuit. circuit.
service service
these these
of of
seized seized
records. records.
trouble trouble
for for
an an
on on
which which
marker marker
depending depending
a a
and and
are are
summon summon
on on
incoming incoming
of of
can can
circuit circuit
a a
Controller Controller
Decoder-Marker Decoder-Marker
be be
Decoder Decoder
multicontact multicontact
link link This This When When
operation operation
and and
the the
circuit circuit
There There
The The On On
The The
trouble trouble
of of
to to
the the
time. time.
call call
perforator perforator
extend extend
the the
they they
a a
any any
12 12
15 15
13 13
5.19 5.19
may may decoder decoder
5.17 5.17
would would
5.14 5.14
trunk trunk seize seize
mounted mounted 5.18 5.18
in in
summoned summoned
some some
5. 5.
completing completing which which
at at
and and circuits circuits
records records
translator, translator,
perforator perforator 5. 5.
as as 5.16 5.16
perforating perforating
types types
Production Production 5. 5. perforated perforated
Calls Calls
If If
the the channel, channel,
directly directly decoder, decoder,
equipment. equipment. failure failure SECTION 13b(1)
It might also rapidly exhaust the card bins. For the test are determined solely from the end result this reason, a counter and timer are provided which lamps. can limit the number of records that can be made in a given time. For example, the number of 5.30 However, the reverse is not true, because records taken in a minute can be reduced from 30 even though the key in the decoder-marker to as few as five. test circuit is operated to cancel card records, this test circuit must still seize the recorder circuit before it can start a test call. This is because Test Circuits on Trouble Recorder Frame the leads by which the decoder-marker test circuit gains access to decoders and markers for testing 5.25 The test circuits on the trouble recorder are also used in making card records. frame are manual in the sense that they cannot automatically progress from one circuit unit under test to the next. The keys must be manually Decoder, Decoder Channel, Marker, and Translator set for each unit to be tested. The circuit tests Verification Tests - Manual Operations Control of this unit, gives a visual indication as to whether Translator the test was successful or not, and if the test was successful, it releases. If the test encounters a 5.31 Decoder, decoder channel, marker, and failure the test circuit stops. translation verification tests are performed by one circuit - the decoder marker test and 5.26 Keys are provided on each test circuit to trouble recorder circuit. The decoder-marker test facilitate the making of card records on all circuit has direct access for test purposes, to test calls, on only those encountering trouble, or decoders, decoder channels, markers, and card so that no card records will be made on test calls. translators. This access is through the same relays that are used for trouble recording, since most of 5.27 The decoder, marker, and translator tests the leads are used for both functions. For this cannot be made simultaneously since they reason, on test calls, the decoder-marker test circuit are made by the same test circuit (the decoder-marker must obtain the trouble recorder before the test test circuit) and some of the equipment paths are call can proceed, whether or not a card record is used in common. made.
5.28 On the other hand, the link controller tests 5.32 The test circuit simulates normal service circuit and the decoder-marker test circuit sequences and operations. In all classes of can be operated at the same time, but with certain tests, a decoder or decoder channel is selected limitations. If the keys in both test circuits are and the test circuit primes it with information set up to make card records, they compete with normally received on various types of service calls. each other and with service calls for the use of A particular marker may be picked for seizure on the trouble recorder. Under this condition (where a test call or the marker may be selected on a both test circuits are making card records), if the regular service basis. recorder is busy on a test call or on a service call, another test call cannot be started until the recorder (a) Decoder Test: The test call is stopped is available to it. The test keys can be set up after the marker has received all the and the start key operated, but the tests will not information from the decoder and the decoder begin until the test circuit has seized the recorder. has released. This checks the operation of When it does, it holds the recorder busy until its the decoder and card translators, and verifies tests are completed and a card record is made. the successful transmission of information from the decoders to markers. 5.29 Link controller tests can proceed at the same time that the decoder-marker tests circuit (b) Decoder Channel Test: The test call is working provided that the key in the link is stopped after the marker has received controller test circuit is operated to cancel the card all the information from the decoder channel recording feature. In this case, the link controller and the decoder channel has released. This does not seize the trouble recorder circuit but checks the operation of the decoder channel operates independently of it, and the results of and verifies the successful transmission of
Page 38
a a
a a
to to
of of
39 39
no no
on on
for for
the the
the the
the the
the the
etc. etc.
any any
test test
link, link,
to to
when when
made made
Many Many
circuit circuit
central central
are: are:
trouble trouble
on on
13b(l) 13b(l)
only only
is is
Page Page
optional optional
recorder recorder
recorder recorder
only only
provided provided
normally normally
decoders, decoders,
furnishes furnishes
a a
results results
due due
terminals, terminals,
associated associated
perforator perforator
unlike unlike
emergency emergency
feasible feasible
calls calls
make-busy make-busy
indicate indicate
obtain obtain
making making
is is
the the
sender sender
are are
etc. etc.
it it
is is
of of
simulate simulate
the the
calls, calls,
to to
are are
the the
to to
translator, translator,
for for
Features Features
test test
and and
busies busies
translators, translators,
located located
would would
trouble trouble
with with
features features
trouble trouble
circuit circuit
controller controller
SECTION SECTION
features. features.
to to
of of
etc. etc.
provision provision
call, call,
or or
putting putting
trunk, trunk,
on on
test test
circuit circuit
alarms, alarms,
can can
circuit, circuit,
lamps lamps
make make
recorder recorder
H, H,
which which
and and
as as
decoder-marker decoder-marker
frame frame
the the
failure failure link link
other other
all all
test test
failure failure
keys keys
It It
for for
jacks jacks
all all
of of
link. link.
that that
alarms, alarms,
circuit, circuit,
test test
test test
will will
busy, busy,
making making
on on
the the
the the
or or
result result
of of
on on
service service
all all
any any
The The
audible audible
Make-Busy Make-Busy
records records
controller controller
call, call,
trouble, trouble,
-
jacks jacks
for for
a a association association
of of
incoming incoming test test
trouble trouble
of of
This This
noted noted
end end
DIVISION DIVISION
one one
supply supply
markers, markers,
sender sender
visual visual
recorder recorder
lamps lamps
maintenance maintenance
of of
the the
miscellaneous miscellaneous
and and
on on
test test
card card
operation, operation,
of of
circuits circuits
lamps, lamps,
case case
information information
jacks jacks
means means
records records
jacks, jacks,
frame. frame.
all. all.
direct direct
controller controller
been been
the the
service service
place place
any any
connector. connector.
the the
registers, registers,
and and
controllers controllers
for for
Tests Tests
these these
fuse fuse
with with
a a
by by test test
no no
at at
the the
Alarm Alarm
in in
under under
line line
of of
to to
desirable. desirable.
battery battery
has has
card card
trouble trouble
some some
link link
by by
channels, channels,
link link
on on
recorder recorder
in in
seizure seizure
encountering encountering
plant plant
is is
It It
and and
have have
recorder recorder
through through
combination combination
information information
give give
Some Some
frame frame
location location Test Test As As
busy busy
decoder-marker decoder-marker
certain certain circuit, The The
Make-busy Make-busy
The The
Audible Audible
48-volt 48-volt
circuit circuit
and and
miscellaneous miscellaneous
records records
sender, sender,
this this
dispense dispense
controller controller
given given
calls calls
Controller Controller
test. test.
making making
the the
these these
translator translator
(c) (c)
trouble trouble
(b) (b)
making making
decoder decoder
trouble trouble
motor, motor,
(a) (a)
and and
actual actual
Link Link
trouble trouble
with with test test
the the card card
of of
and and
desired desired
Miscellaneous Miscellaneous
receive receive
5.35 5.35 recorder recorder
5.33 5.33
5.34 5.34 5.36 5.36
all all
equipment. equipment.
which which
for for
jacks, jacks,
frame. frame.
a a
A A
is is
in in
of of
as as
of of
its its
its its
all all
its its
By By
the the
the the
the the
The The
new new
fails fails
This This
This This
busy busy
block block
when when
being being
of of
worst worst
where where
of of
to to
in in
of of
of of
circuit circuit
permit permit
give give
test. test.
trouble trouble
decoder decoder
that that
selected. selected.
recorder recorder
outgoing outgoing
such such
recorded recorded
proceeds proceeds
outgoing outgoing
types types
complete complete
available available
performs performs
are are
functions, functions,
important important
lamp lamp
when when
distributor distributor
all all
the the
indications indications
distributor distributor
substituted substituted
made made be be
the the
or or
a a
an an
test test
service. service.
the the
point point
Test: Test:
the the
trunk trunk
Keys Keys
made made
call call
the the
and and
Control Control
of of
is is
perforated perforated
to to
or or
the the
which which
record record
on on
The The
removed. removed.
done, done,
recorder. recorder.
integrity integrity
addition addition
the the
necessary necessary
information information
channels channels
and and
which which
the the
always always
If If
be be
phototransistors phototransistors
trunks trunks
useful useful
trouble trouble
into into
certain certain
then then
indicates indicates
the the
under under
have have
until until
or or
at at
In In
test test
are are
marker's marker's
be be
is is
of of
the the
unit. unit.
are are
is is
are are
calls, calls,
the the
decoder decoder
operations operations
simultaneously. simultaneously.
can can
to to
failed failed
put put
the the
completes completes
channels channels
keys, keys,
the the
selection selection
lamps. lamps.
and and
operations. operations.
output output
lamp lamp
records records
of of
when when
The The
trouble trouble
bar bar
is is
added added
translator translator
translator translator
incoming incoming
test test
complete complete
that that
provided provided
the the
translators translators
must must
On On
A A
tests tests
the the
that that
Verification Verification
feature feature
made made
records records
116 116
Lamps: Lamps:
operated operated
a a
record record
is is
checked checked
code code
of of
the the
are are
satisfactory. satisfactory.
these these
translation translation
manual manual
result result
amplifiers amplifiers
the the
card card
checks checks
used used
decoder decoder
Operations Operations
subgroup subgroup
be be
the the
proper proper
interrupted interrupted
marker marker
card card
card card
Test: Test:
to to
translator translator
jobs jobs
the the
No No
This This
from from
are are
is is
has has
selector selector
the the
by by
end end
held held
of of
test test
card card
the the
operation operation
with with
markers. markers.
from from
any any
the the
connections connections
of of
also also
can can
channel channel
cards cards
the the
and and
the the
The The
make make
a a
functions functions
including including
record record
circuit circuit
Result Result
a a
emergency emergency
is is
to to
call call
information information
of of
of of
is is
a a
all all
the the
conditions. conditions.
This This
while while
particular particular
selected selected
translator translator
the the
of of
results results
select select
Translation Translation
Manual Manual
Translator: Translator:
Marker Marker
marker marker End End
one one
perforated perforated
until until
test test
it it
channels channels
a a
light, light,
locked-in locked-in
(e) (e)
(f) (f)
(c) (c)
the the
recorder recorder
replacing replacing
and and maintenance maintenance The The
information. information. perforated perforated
on on
any any
record record translator translator
end end
performed. performed.
complete complete register register (d) (d)
circuit circuit
connectors connectors
including including and and
particular particular connection connection electrical electrical
channel. channel.
registers registers
information information
for for
to to to to
information information
can can
trunk. trunk.
translator translator
circuit circuit 116 116
operating operating
frames. frames. test test
routing routing
checks checks
frame, frame, functions, functions, SECTION 13b(1)
(d) In-use lamps to show which decoders, decoder to MF or DP are desired. On this type of test, channels, markers, connectors, or link the test frame simulates service calls which may controllers are in use. be to any point and which are carried to completion.
(e) Plant registers to count the number of lost 5.42 Where distinctive features peculiar to overseas, display calls, the number of decoder, decoder MF, or DP operation are being tested, the channel, and marker first trial calls and second test frame progresses through one class of sender trial calls, etc. and then stops.
(f) Sender link delay lamps. 5.43 Various combinations of input and output conditions are checked, many on a marginal B. Incoming Sender Test Frame or Incoming Sender basis. The test frame is equipped with a full and Register Test Frame keyset and a number of lever-type keys for establishing the various test conditions. 5.37 These frames (incoming sender test frame was provided in older non-CAMA offices; Manual Tests incoming sender and register test frame (Fig. 52) is provided in all new offices) are used to make 5.44 When desired (for example, for trouble routine and trouble location tests of incoming senders location tests), a particular sender can be or incoming registers. The sender or register is selected. This sender or register can then be seized by the test frame and selected codes are tested under manual control, or repeated. tests can transmitted to it on either a multifrequency or a be made automatically. The repeated test feature dial pulse basis. The output of the sender or is of particular value in locating an intermittent register is automatically checked against the input. trouble condition or for insuring satisfactory operation Lamps are provided to indicate the progress of of a sender before returning it to service. the tests and to indicate any failure of the sender on specific tests. 5.45 The test circuit is arranged for remote control from the sender or register locations, 5.38 The test frame can be operated on an so that the sender or register operation may be automatic progression basis or on a particular observed under controlled conditions. circuit basis. C. Outgoing Sender Test Frame Automatic Tests 5.46 This test frame (Fig. 53) has general functions 5.39 When the frame is operated on an automatic similar to those of the incoming sender test basis, it progresses from one sender or frame, that is, automatic progression over the register to another until all the incoming senders outgoing senders, or individual circuit testing; or registers in the office have been tested or, on comparison of input with output information, certain tests, until all the senders of a class (that indicating lamps, etc. is, dial pulse, multifrequency, or overseas) have been tested. If trouble is encountered, the test D. Sender Make-Busy Frame frame .stops and sounds an alarm. 5.47 There is a make-busy jack on this frame 5.40 Senders or registers that are busy may be (Fig. 54) for each incoming and outgoing passed over automatically. The sender or sender in the office. These jacks are used to register under test is identified by lamps at the remove senders from service. Associated with test frame. Lamps are also provided to indicate each make-busy jack are a stuck sender lamp and the progress of the various tests, and on test a priming jack. failure to indicate the point of failure. 5.48 The stuck sender holding control circuit 5.41 The test frame can be operated so that it which determines the number of senders will automatically progress through all the that can be held is located on this frame. This MF senders and DP senders with one key setting. holding control which is common to all senders of This is useful when no tests of features peculiar a type, includes a 3-position key which determines
Page 40
a a
a a
it it
to to
of of
be be
is is
41 41
on on
an an
No No
the the
the the
one one
line line
toll toll
The The
to to
goes goes
them them
steps steps
when when
trunk trunk
train. train.
tested tested
office, office,
frame frame
which which
frame frame
on on
offices offices
can can
pulsing pulsing
general general
interval interval
13b(1) 13b(1)
Page Page
by by
When When
test test
(both (both
numbers numbers
outgoing outgoing
standard standard
any any
repeated repeated
thing thing
trunk, trunk,
be be
sequence, sequence,
from from
a a
from from
by by
then then
only only
trunk trunk test test
feature feature
encounters encounters
four four
test test
the the
or or
frame frame
local local
connected connected
a a
the the
trunk. trunk.
through through
to to
frame frame
it it the the
pass pass
number. number.
distant distant
it. it.
circuit circuit
the the
the the
to to
must must
office office
tests. tests.
same same
these these
the the
if if
dial dial
select select
to to
switching switching
test test
operated operated
made made
tests tests
the the
SECTION SECTION
test test
on on
call call
of of
circuit, circuit,
to to
line line
or or
trunk trunk
control control
operator operator
test test
when when
the the
to to
stopping stopping
indicate indicate
is is
the the
H, H,
given given
to to
numbers) numbers)
be be
the the
the the
office office
caused caused
access access
the the
tests, tests,
or or
progresses progresses
of of
a a
test test
predetermined predetermined circuits. circuits.
single single
distant distant
the the
idle, idle,
relay relay
encounters encounters
and and
any any
on on
regular regular
testing; testing;
trunk trunk
a a
feature feature
predetermined predetermined
can can
line. line.
and and
at at it it
does does
changing changing
lamps lamps
links links
automatically automatically
that that
frame frame
remote remote
or or
a a
the the
route route
the the
which which
It It
the the
make make
relay relay
standard standard
switching switching
obtains obtains
keys, keys,
be be
to to
DIVISION DIVISION
trunks, trunks,
customer customer
for for
wait wait
A A
trunk trunk
attendant attendant
used used
frame frame
busy busy
in in
to to
trunks trunks to to
in in
tests tests
progress progress
of of
become become
circuit circuit
test test
basis, basis,
trunk, trunk,
of of
toll toll
a a
provided provided
to to
automatic automatic
continuity continuity
the the
the the
switching switching
a a
to to
released released
the the
test. test.
not not
office, office,
trunk trunk
and and
the the
test test
the the
frame frame
line line
to to
outgoing outgoing
trouble trouble
the the
used used
as as
cannot cannot
the the
through through made made
trunks trunks
that that
are are
on on
trunk. trunk.
a a
all all
as as
is is
toll toll
service service
the the
course course
or or
the the
is is
these these
then then
test test
means means
either either
of of
is is
another another
the the
Tests Tests
so so
and and
desired. desired.
simple simple
trunk trunk
far far
trunks trunks
appropriate appropriate
busy busy
particular particular
of of
is is
next next
the the
a a
which which
of of
every every
line line
set set
By By
to to
manual manual
When When
directs directs
On On
tested tested
When When automatic automatic
a a
appear appear
indicate indicate
Lamps Lamps
with with
The The
trunks trunks
A A
permits permits
as as
as as
number number
the the
certain certain
group group
busy busy
the the
desired. desired.
to to
marker marker
has has
test test
trouble. trouble.
as as
a a 5.62 5.62
for for
wires wires
5.61 5.61
makes makes
trunks trunks manually. manually.
to to
line line
the the
out out
provision provision 5.60 5.60
during during
or or
which which
it it
testing testing
and and
5.59 5.59
trunk trunk
a a
nature nature Automatic Automatic
5.58 5.58
incoming incoming
occurs occurs failure marker marker
ahead ahead
tests, tests,
5.57 5.57 A A
5.56 5.56 position position
provided, provided,
switching switching
is is
or or
to to
on on
are are
4M 4M
etc, etc,
Test Test
and and
and and
dial dial
and and
any any
Like Like
keys keys
This This
busy busy
leave leave
stuck stuck
times times
count count
group group
circuit circuit
visual visual
offices offices
offices offices
in in
circuit circuit
appear appear
sender sender
in in
sender sender
reorder reorder
normal normal
reorder reorder
desired desired
desired. desired. records records
plug plug
number number
a a
end end
etc. etc.
of of
no no
a a
local local
reorder. reorder.
A A
is is
circuit circuit
peg peg
as as
Trunk Trunk
as as
being being
of of
and and
jack. jack.
one one
dial dial
local local
as as
operated operated
group group
it it
trouble trouble
to to
final final
locks locks
ATCT ATCT
which which
frames. frames.
to: to:
connection connection
overall overall
a a
are are
be be
If If
a a
make make
operators; operators;
ten. ten.
such such
associated associated
trunks, trunks,
or or
register register
such such
that that
distant distant
individual individual
call call
local local
number number
to to
for for
senders senders
can can
to to
audible audible
manual manual
announcement, announcement,
which which
number number
other other
trunks trunks
priming priming
announcement, announcement,
(b) (b)
to to make-busy make-busy
make make
its its
manually, manually,
it it
an an
the the trunks trunks
frame frame
it it
the the
than than
particular particular
Connecting Connecting
with with
to to
to to
the the
count count
an an
predetermined predetermined
a a
or or
trunks trunks
senders, senders,
to to
controllers. controllers.
Offices Offices
the the
the the
senders. senders.
at at
55.) 55.)
a a
held, held,
this this
terminals terminals
all all
Toll Toll
of of
encounters encounters
trunks trunks
routes routes
peg peg
announcement, announcement,
causes causes
count count
and and
trunks trunks
4A 4A
reorder reorder
provided provided
information information
up, up,
link link
into into
causes causes
provided provided
overload overload
used used
trunks trunks
on on
frames, frames,
Fig. Fig.
basis. basis.
greater greater
circuit circuit
and and
stuck stuck
trunks trunks
are are
A A
that that
service service
switching switching
in in
is is
up, up,
is is
is is
it it sender, sender,
when when
and and
the the
group group
miscellaneous miscellaneous
lock lock
light light
operator operator
test test
not not
(c) (c)
final final
which which
sender sender
(See (See
progression, progression,
reorder reorder
toll toll
sender sender
in in
Outgoing Outgoing
these these
trunks, trunks,
offices; offices;
lock lock
as as
trunks trunks
to to a a
automatically automatically
out, out,
or or
lamp lamp
inserted inserted
an an
manual manual
of of
frame frame
senders senders
included included
alarm alarm
switching switching
of of
stuck stuck
lamps lamps
will will
(AOCT (AOCT
certain certain
switching switching
each each
sender sender
a a
not not
operate. operate. telephone telephone
of of
well well
up, up,
a a
an an
no no
basis. basis.
number number
occurs occurs
lamp lamp
the the
on on
as as
tested tested
Toll Toll
and and
Toll Toll
to to
tests tests
This This
A A
registers registers
and and
alarm alarm
Also Also
For For
times times
When When
automatic automatic
operator operator
manual manual
does does
lock lock
Automatic Automatic
Frame Frame
Offices) Offices) automatic automatic
be be
busy. busy.
number number
that that front front
free free
senders senders
tested tested
5.55 5.55
in in
announcement, announcement,
5.54 5.54 can can
manual manual
an an
other other
announcement, announcement,
miscellaneous miscellaneous
announcement, announcement, word word 5.53 5.53
and and
E. E.
intercommunicating intercommunicating
5.52 5.52
5.51 5.51 trouble trouble
5.50 5.50
are are
momentarily momentarily
release. release.
primes primes
operates operates the the
5.49 5.49
alarm alarm
to to
sender sender
that that
(a) (a) desired desired
will will of of SECTION 13b(1)
5.63 The test circuit transmits the trunk test line tone for a far-to-near transmission loss measurement. or busy-line number to the incoming trunk Tests to 104 equivalent test lines also give near-to-far or terminating sender in the distant office. This transmission measurements and far-end and near causes the distant incoming trunk to be connected end noise measurements. On trunks to dial offices, to one of these test lines through the local switches. the trunk can be directed to a transmission test The tests are made by an exchange of signals line on a preset number basis. between the test frame and the test line. 5.69 On trunks to manual offices, the test frame 5.64 Tests to a busy line include a continuity attendant obtains an attendant at the distant test and a test of the ability of the trunk office over the outgoing trunk and requests a supervisory relay to follow busy-back flashes. connection to a transmission test line.
5.65 Tests to a trunk test line are more complete 5.70 In either case, the control of the test frame and include tests of ringing, tripping, and and the transmission measurements are supervisory features of the outgoing trunk and manually supervised. the distant incoming trunk. Miscellaneous Features Manual Tests 5.71 A telephone circuit is provided for communication 5.66 A 10-button MF keyset and a dial are with operators when toll switching or provided at the test frame, for making miscellaneous trunks to operators or desks are being manual tests. The attendant operates the proper tested. keys to select the trunk for test, and then obtains the operator at the distant office on a straightforward 5.72 When two automatic outgoing trunk test basis or by dialing or keypulsing. The attendant frames are provided in an office, the trunks makes the test in cooperation with the operator. associated with each test frame can be interchanged by means of a transfer arrangement on the test 5.67 Manual tests can be made on toll switching frames, so that either frame may have access to trunks to local dial offices, as well as on all of the trunks appearing on the other test frame. trunks to manual offices. On such tests, an outgoing trunk is selected automatically, or by the attendant. F. Manual Outgoing Trunk Test Frame- Test and Continuity and other tests proceed automatically Make-Busy Frames up to the point where the trunk (SL) relay has been tested and the outgoing trunk is connected 5.73 In addition to the test facilities of the to the distant incoming trunk or terminating sender automatic test frame just described, a manual for pulsing. The test frame then stops and the test frame (Fig. 56) is provided which has facilities attendant can dial or keypulse any desired customer for making additional types of tests on outgoing number. When the off-hook condition occurs at trunks. For making these tests, the outgoing the called number, a lamp lights at the test frame. trunks are equipped with test and make-busy jacks This test can be used to check the supervisory which can be used to patch the trunks to the test and transmission performance of the trunk. The frame. These jacks appear on one or more test attendant manually releases the test frame. If it and make-busy frames which are located adjacent is set for automatic testing, it will immediately to the outgoing trunk frame. select the next trunk and go through the tests up to the test of the (SL) relay, when it will again 5.74 The test jacks are bridged to the cable side stop and wait for the attendant to complete the of the outgoing trunks, thus bypassing the test. outgoing trunk relay equipment. This permits voltmeter, transmission, and continuity tests to be Transmission Measurements made directly out on the cables. This type of test is of considerable assistance in locating cable troubles. 5.68 For making transmission measurements, the Other tests can be made which are of value in outgoing trunk is connected to a 102 equivalent, localizing trunk troubles, for example, determining or 104 equivalent test line at the distant office whether they are in the 4A or 4M switching which provides a 1-milliwatt source of 1000-hertz equipment or in the terminating office equipment.
Page 42 DIVISION H, SECTION 13b(1)
These include tests of the incoming trunk and measuring system (ATMS) equipment, a transmission selector equipment in the distant office. test unit, and a teletypewriter program control unit. A 35-type send-receive teletypewriter is 5.75 The test circuit includes a voltmeter circuit, associated with the AOTT instead of the receive-only a telephone circuit, and sender and supervisory type used with AOOT. The teletypewriter is used features. Two trunks can be patched to the test to read the tape for trunk selection and testing frame at a time, but only one of them can be set information. Test results are displayed on page up for testing. The other trunk can then be used printout, punched tape, or both. for communicating with an attendant at the distant office, or for making interference tests, by operating Automatic Operational Tests a hold key on the first trunk at the proper time. 5.81 Automatic tests are made on all trunks which 5.76 Each test and make-busy frame has a have access to local central office test lines capacity for two thousand jack circuits for and, by means of a tone detector, on other 2-wire trunks. It has smaller capacities for different nonoperator type trunks. On an automatic operation, combinations of 2-wire, 3-wire and 4-wire trunks. the test circuit will start with the lowest numbered The jacks are arranged by cross-connection in trunk and progressively select trunks upward to groups by office designations. As many jack bays the highest numbered trunk. The test circuit may as required may be provided. Additional test frames also be instructed to start at a particular numbered may also be furnished. trunk and end at a particular numbered trunk.
G. Automatic Outgoing Trunk Test Frame for Toll 5.82 Test to a busy line is a rapid test of the Completing Trunks (AOOT or AOTT) ability of the trunk to switch a call. The trunk is directed to a busy line at the distant 5.77 This frame may be provided as one of two office and the return of busy tone satisfies the versions: the automatic outgoing toll test. connecting trunk operational test frame (AOOT) or transmission test frame (AOTT). (See Fig. 57.) 5.83 Test line supervision tests are intended to This circuit is arranged to automatically select test all the operational capabilities of the certain outgoing toll completing trunk circuits on outgoing trunk and the distant end incoming trunk. the outgoing link and connector frame and if they are idle, test them for their principal features. 5.84 Reorder tests and early release tests are used to test trunks that require an outgoing 5.78 The trunk test circuits appear on the incoming sender. link frame as incoming trunks and, by means of a test connector, direct the marker to establish 5.85 If announcement trunks are included in the a connection through the incoming and outgoing test selection span during automatic testing, links to the trunks to be tested. the test circuit will test the ability of these trunks to return tone or voice announcement. 5.79 The AOOT is used primarily to make automatic or manual operational circuit tests of toll 5.86 On automatic tests, when the test circuit switching trunks to local offices, TX operator trunks, encounters trouble and a teletypewriter is or miscellaneous trunks such as CBA or reorder associated, a typewritten indication of the trouble trunks. Manual transmission tests may also be will be produced and a retest made of the trunk. made at this test frame. The AOOT is equipped Trouble on the retest will either cause a second with a 35-type receive-only teletypewriter for printout and advance to the next trunk or it will producing a printout of test results or for perforating sound an alarm and block the test circuit. If no a tape showing test results. teletypewriter is associated with the test circuit, a trouble will cause an alarm to sound and the test 5.80 The AOTT is primarily used to make automatic circuit to block. transmission and noise tests on toll switching trunks to local offices. The AOTT basically consists 5.87 Some trunks which are normally tested on of the same components used with the AOOT plus a manual control basis are given a lead a frame which mounts automatic transmission continuity test when automatic testing is in progress.
Page 43 to
of
to
or
of
Set
set,
for
the
The
and
The
test
jack
unit,
lines,
allow
either
tested
to
offices
trunks
sender
testing
trouble to
Test
location
test
overseas
line
provided
used
functions
appearing
switching
controller
operation
test
in
set
test
will
4M
frame
units.
is
the
removed
the
Set
adjustments
operation
(tandem)
being
frames.
test
and
equipment
Trunk
use
and
test
link
certain
relay
and performance trunk on
This
the
is
mobile
outgoing cord trunks
and the
provided
system
proximity Test
been
and
trunk
and
for
a
the
the
tested.
4A
the
in
auxiliary
set
facilitate
and
of
set
trunks from
tests
tests
has
trunks
lntertoll
in
trunk
bays
testing
incoming
or
to
frame.
tandem
and
indicate
with
supply
necessary
example,
toll completingtoll
observe
test
plug-in
being
test
purposes:
extension
for
and
on
the
to
that
patching
Frequency
and
bay
the
to
and
used-
where
indicate
Set
For
the
and
switchboard.
of
consists
or
made
is
on
removed
incoming
patching to
set
overseas
calls
circuit
Test
trunks.
while
trunk
AOTT.
special
of
set toll
portable
operational connector
set
are
portable
rack-mounted
appropriate
test
are
a
miniature
5
A
following intertoll
a
or
a
Outgoing,
patching
the
conditions
intertoll
personnel
at
contains
2-way
test
facility
the
certain
is
is
and
Trunk
test
trunks.
the
of
Identification
functions
tests multifrequency
the
No.
new
identification
means
the
relay
components.
equipment
trunks
arrangement observed
into
made.
AOCT
circuit a
This
The
Test on
Perform for link
Test
for Test
assistance
By the
the
This
the
This
originating
various
wagon
be
the
an
Incoming,
be
trunk
Plug-in
Frame
frame
connecting
trunk
assigned
the
the
(a)
(b)
trains.
(d) intertoll
by (c)
H.
5.94
test and appearances the apply and
conditions. 5.95
I.
5.97
5.96
at
the plug-in plugged can may
maintenance 5.98
its for equipment
by
J.
link
a
a
is
of
to
of
an
are the
104
the
are
test
into
may
may
it
They
meet
on made
made
which
use
at
circuit
in
that
limits.
Timing
singing
circuit.
control test provide
trouble.
as
(ATMS)
to
with
be the
sounded. printout
(105,
be
milliwatt
read
key.
tests
so
automatic
as
tests
a
is
the
automatic
test
a
basis.
the
is
by
fail
test
tested
to
to transmission
tests
trunks
tape
tests.
manually
may
circuit
by
under
of
control
such
noise
system
cannot
The of provided cause
be
deviation
alarm
measurements
the
and
testing
to
which
which
test
associated
tests
no
equipment
or
These
and access
characteristics
making
access
identify
are tests
tested
trunk
control
the
testing.
manual
can
tests
is
control
automatic
which
and
to
terminations.
transmission
relay
tape
of
be
controlled operation
encountered the
an
the
trunks
manual
measuring
test
testing,
to
having
when basis.
is
These
Tests
arranged
tests
certain
having
is
used
on
of
keysets
the
circuit
making
indefinitely.
measuring only
supply
be
tape. selected
complete
from and
control
results
automatic by
those
are
transmission
loss
for transmission
One-way
teletypewriter
requirements
MF
test
fully
make
during
manual
trunks
can
held
control
may
the
a
line)
tests.
trunks
1) trouble
to
selection
only
on
director
(
teletypewriter
the
necessary
all
and
be
of
trunks
making
frame
during
punched
return
transmission
on
or
Transmission tested
external
test
obtained
lines). is
13b
and
the
on
used
which
a
advanced
Tests
circuit
Two-way
by
transmission
be
for
Dial All manual
test
When
may Automatic when
circuit
Trunk an
characteristics
indications
It
and
made
of
44
be
test
ATMS
into
teletypewriter
also
test
transmission
made
end
trunks
made
discontinued
be
90
93
SECTION
Manual
passed 5.88
Trunks
means
are
5.89
point
cannot
automatically. trunk may is
5.
Automatic
5.91
automatic be Lamp
be (102-type 5.92
director type circuit. the
the
5. transmission normally far read
form
Page
to the The
all ·
a
is
to
is
of
as
on
an
45
the
On
via
the
are
the
test
made types there
noise
made
trunk reach
trunk
frame
As
in
of
103,
frame.
13b(1)
Frame
control
putting
out
for
through
intertoll
intertoll whether
intertoll
intertoll
Page to
operator
which
tests
times
are
testboard
reach
and
are
is
test
to
that
locating
line
an
and
test
on
trunks,
an
provided
that
Test
or
code,
the
to
general
office.
in
of
on
intertoll
intertoll
is
2-way
to
pulsed
tests
testing
arrangement
test
frame
many
MF
tests
prior
selected
trunk
SECTION
busy
testboard.
trunks
operated
described.
trunk
outgoing of
Trunk
the
case,
for
a
58)
code
or
as
be
same
H,
front
and
is
3-digit
The
value
code
exception
operator
of
distant
to
in
a
toll
depending
trunk
These
transmission
been
similar
DP
outgoing
can
of
the
The
key
reach
paths
(Fig.
the
the
office.
line
either
the
terminated
a
is
outgoing
lntertoll
test
is
intertoll
to On
provided
connecting
new
tests
tests
In
transmission
at
be
DIVISION
2-way
offices.
is
appear
a
keys
trunk
the
operation
test
with
the
with repeatedly
supplementary
already
train.
toll
distant
frame
trunks.
to
can
manually,
key
distant
frame
a
or
of
automatic
toll
trunks,
outward
104
feature
office.
has
overall forward which
Outgoing
is
outgoing
or
the
a
test
the testing
the
made,
perform
tested
general
the
test
Tests
switch
automatic
automatic
access
operator.
line.
dials
other
trunks
in
of
to
particular
in
Tests
outgoing or
This
manual
termination
intertoll
are
with
which
cooperation
make
This
the
The
Tests A
pulsed
On
A trunks
office. and
and The
frame
or to
distant
service.
the
test
equivalent
in
on
frame,
line
Automatic
regular
frame
automatic
distant
means
tests
the
not
no
into
trunks 5.104
automatically
5.105 C. trunks
trunk
or
that automatic the (AOCT)
Automatic of is distant
test
5.106
5.107
made
attendant
5.108 Manual at the attendant operator
straight-forward
it Transmission provided
test 5.109 by trouble tests the desired.
is
in
of
be
or
the
are
for
for
toll
the the
that
It
filter
sides from
filters
inside
in
system
permit
overall
groups
trunks.
can
localize
localize
bays
intertoll
intertoll
intertoll
crossbar
used
principal
principal
the
used
Keys
nature
repeaters,
to
automatic
other
a
equipment magnitude
signal
attenuated
and to
drop
to
frequencies,
occurs.
of
All
eight
of
testboard.
expedite
the
reports the
the
occur.
changes
tests in
trunk
also
are or
the
located
and
the
is
is
emergencies
and
one to
signal.
of
crossbar
of
intertoll bays
room
the
input
patching
trunks.
of
centralize
are
circuits,
non-TASI
meter.
cables,
room
some
used
trunks,
crossbar failure
bays
for
at
of
the
any
toll
line
trouble
to
and
size
crosses failures
of
these
TASI
of
facilities
given
They
plant
personnel.
that
the determine
with
identification
the
the
care
testing
testboard
consists
EQUIPMENT
when
with
testboard
operational
these
terminal
at
types
a
maintaining
These
outgoing
terminal
signaling
to
of
to
serves
when
indication
to
requirements
for
rectifying
of
from
toll
Testboard
circuits,
set
toll as
etc,
receiving
and
testing work
frame
a
and
and
and
an
involving
and
with
exception
outside
many made
part
appearances
testing.
to
for
between Toll
17D
17C
toll
the
such
for
lines
them,
test
access
test
office.
test
components
traffic
increasing
service
the
and associated
general
are
are
are
to
for
that of
maintenance
testboards,
Bays
No.
jack
testboard
spare
No.
in
the circuits,
toll
of
be
toll
toll
point
in
testing
provide for made
circuits
The
MAINTENANCE
troubles
or
so
incoming
with
access
in
up
17-Type
The
to
maintenance point
The
The
the
There
troubles Tests
which
have
The for
these
toll
and
may
access
relay
on
of
been
LINE
equipment,
trouble.
frequency
switching
No.
Patching
amplifier,
central
changes
rearranging
similar
circuit
the
102
signals.
of provided meter corresponding an
circuits TOLL and
5.99 have is
systems,
trunks switching.
A.
point
5.100 From made
5.101 trunks.
B.
troubles restoration 5. the
trunks ready
operators
building toll substituting
office, plant or trunk
5.103 of
for such (2)
4M
the
the
also
data
alarm
design
alarm)
(major,
and
indicate
network
and
provided.
provision
to
extend
separations
visually
collect
4A
circuit
sections
frame
to as
and
13e(l)
network
to
condition
No.
show
registers
traffic
in
test
engineers,
These
to
of
used
or
Section
individual
provided
alarm
arranged
another.
traffic
and operation
are
H,
traffic
the
so
to
types
the involved
manager,
are
time,
detail.
of
of
of
the
are
in
floor
failure)
numerous
(fuse,
others by
Division
registers
network
various
one
method
location
REGISTERS are
severity
signals
and
power
the
registers
failure
the
the
aisle
Arrangements
from
or
and
DFMP,
There required Traffic
of
administration.
the TRAFFIC
and lamps minor, audibly
lamp. type alarms
6.01
6. recommendations.
describe crossbar discuss administrator, supervisor, 6.02
and
the
both
aisle
trunk trunk
where
frame These
of
trouble
alarms,
without
on
provided
provided,
Directing
the switching automatic
connector
The
main
next
the
place
frame
are
fuse
the
are
attendant.
etc.
to
supplementary
and
in
the alarms.
a
desired
of
an
pilots,
with
is
allowing
crossbar
is
control
link
indications
features.
of
pilots
test
frame
described
aisle
addition
and
audible
frame
consist
other
exit
connectors;
and
test
in
thereby
testing
testing
test
sender
service
trouble
to
conjunction
frame
and
in
the
trunk the
alarms
tests,
noise
previously
marker
advance
features,
distinctive
used
similar
for
and
pilots, to
namely
to
teletypewriter
operational
repeat
These
transmission
13b(1)
intertoll
with
requiring
markers,
The
frame
Alarm
indicator
floor
and
alarms
manner
lamps,
46
frame
a
arranged
5.110 SECTION
transmission automatic is initial outgoing automatic
without
ALARMS in test
5.111
pilot pilots,
together time
systems. circuits,
Page DIVISION H, SECTION 13b(1)
HORIZONTAL MULTIPLE VERTICAL SOLDERING TERMINALS CONTACT MULTIPLE SELECTING MAGNET
SELECTING OFF-NORMAL SPRINGS
Fig. 1-Partial Perspective View of Unit Crossbar Switch (200 Point) (2.02)
Page 47/48 DIVISION H, SECTION 13b{1)
9~~~~~~~~~~~~+-~~4- 8 ~~;-r;-r;-+;-+4-+4-+~~-+~4- 7~~~~-+~~~~~~~+-~~~ 6 ~~;-r;-r;-+;-+~+4-+~~-+~4- 5 ~~;-r;-r;-+;-+~+4-+~~-+~4- 4~-r~~-+~~r+~~~~+-~~4- 3~~4-+4-+~~-+~~-+~~~~~ 2~~4-+4-+~~-+~~-+~~~~~ I 0~~+-+4~1-+4-+4-+4-+~+4-+~+-
Fig. 2-Schematic of Crossbar Switch (10 Horizontal ·Paths) (2.03)
9~~4-~~~~~ 9~~4-~~4-~~ 8~-r;-+;-+~~r+ 8~-+~~-+~~~ 7~~4-~~~~~ 7~~4-~~4-~~ 6~-r;-+;-+~~r+ 6~~;-r;-r;-+;~ 5~~4-~~~~~ 5~~4-~~4-~~ 4~~+-~~;-+;~ 4~~4-~~4-+4~ 3~~+-~~4-+4~ 3~~4-~~4-~~ 2"""+-t-+-~~;-r;-r 2~~4-~~4-~~ to-+~4-+---1~4-+---1~ 0~~;-r;-r;-r;~
Fig. 3-Schematic of Crossbar Switch (20 Horizontal Paths) (2.04)
Page 49/50 DIVISION H, SECTION lJb(l)
------~'--- . /- - I__. --- __.----
10. VERTIC AL UNIT !OO . POINT CROSS BAR SWITCH
) ' 'J\ J ~
20-VERT ICAL UNIT 200 . POINT CROSSBAR SWITCH
Fig. 4-C rossbar sWitches · (2.05)
Page 51 / 52 DIVISION H, SECTION 13b ( 1)
INCOMING FRAME OUTGOING FRAME
PRI SW SEC SW PRI SW SEC SW
11811 liNK "C" LINK (JUNCTOR)
Fig. 5-Channel Between Incoming and Outgoing Trunks (2.07)
INC_FRAME 1 OUT.FRAME 1 "A" "8 LINKS" JUNCTORS
INC OUT TRKS. t--•-t TRKS1----
INC OUT 1-.,_oool TRKS TRKS 1----
Fig. 6-Path of Call Through Incoming and Outgoing Frames (2.07)
Page 53/54
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BAY BAY """"\ """"\ 11 11 ii ii T T 9 9 FCH FCH IIIC' IIIC' MC MC ·8 ·8 LCM LCM LCH LCH P~IMARY P~IMARY _5 _5 H-...... H-...... FC FC ~ ~ .Q .Q ~ ~ ~ ~ ~ ~ r r lg lg It It m m ~ ~ lfi lfi ~ ~ I I 1 1 2 2 8 8 6 6 ...... 3 3 5 5 .. .. t-'L t-'L C==l' C==l' ...... 8 8 TACT TACT NELS NELS EQPT{ EQPT{ - A A ES ES EY EY RM. RM. ERM. ERM. - ON ON ~ ~ T T BAR BAR K K T T T T TE TE PT PT PL PL LAYS LAYS STRIP STRIP OESIG OESIG CROSS CROSS SWITCH SWITCH 5W 5W 200 200 JACK, JACK, LAMPP LAMPP STRIPS STRIPS STRIPS STRIPS TERM. TERM. MTG MTG STRIPS STRIPS STRIPS STRIPS HOME HOME MISC MISC MATE MATE Ml.t...Tl-C Ml.t...Tl-C liE liE f- I I 2 2 3 3 7 7 4 4 0 0 5 5 9 9 6 6 ~ ~ I~ I~ ~ ~ lb lb I~ I~ ~ ~ ~ ~ ~ ~ ~ ~ ~RAME ~RAME ro ro EXTENSION EXTENSION ~ ~ ~ ~ I~ I~ I~ I~ PRIMARY PRIMARY m m m m m m I! I! m m ~ ~ ! ! ! ! lC lC I I 5 5 7 7 0 0 2 2 6 6 L L 9 9 4 4 8 8 FIRST FIRST STRIP STRIP SWITCHES SWITCHES DESIG DESIG ZOOPT ZOOPT CROSS8AR CROSS8AR 5W 5W - I I 2 2 3 3 0 0 5 5 7 7 9 9 8 8 6 6 ~1: ~1: FRAME FRAME 0 0 ~ ~ I~ I~ I~ I~ I~ I~ ~ ~ ~ ~ 19 19 I~ I~ ~ ~ ~ ~ XTENSK>N XTENSK>N E E -a~· -a~· 2' 2' PRtMARY PRtMARY ~ ~ I~ I~ m m ~ ~ m m ~ ~ m m m m ~ ~ m m I I 6 6 5 5 2 2 0 0 1 1 4 4 8 8 9 9 S£CONO S£CONO a a PANEL PANEL KEY KEY Po!INEL Po!INEL PT PT PLATE PLATE JACK, JACK, LAMP LAMP QPT QPT ERIII ERIII TRIP TRIP STRIP STRIP USE USE DESIG DESIG SWITCHES SWITCHES CROSSBAR CROSSBAR 200 200 5W 5W E E MTG MTG s s - -r -r -F -F 2 2 I I 6 6 3 3 4 4 1 1 9 9 FRAME FRAME ~~ ~~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ro ro ~ ~ ~ ~ At_ At_ L-2 L-2 EXTENSION EXTENSION 2'-8!" 2'-8!" ~ ~ I~ I~ I~ I~ I~ I~ PRIMARY PRIMARY ~ ~ I~ I~ ~ ~ I~ I~ I! I! m m I I 3 3 2 2 7 7 5 5 6 6 4 4 9 9 TKIRO TKIRO 15) PT 13b(l) (2. 5W CROSSBAR SWITCHES OESIG 200 STRIP 57/58 J 1 I I 4 6 2 8 ~ 3 9 0 FRAME ~ ~ ~ ~ I~ !6 16 !6 16 16 Page Frame SIOI< .. SECTION EXTE H, 2·-··· lg ~ m ~ ~~ I~ m I~ ~ I~ SECONDARY 8-0utgoing I 3 7 6 9 2 8 4 5 0 DIVISION l SECOND Fig. a PANEL KEY PT JACK, LAMP TERM MULTI RELAYS STRIPS CONTACT RELAYS CONTACT MULTI 200 5W CROSSBAR SWITCHES OESIG STRIP 7 4 9 I 2 6 3 0 FRAME ~ 16 16 I~ 18 16 16 !6 ~ !6 == £)(TENSION ~FCM MCB MCA' MCA MC&' 8~ 2 = -, I~ lg m ~ lg m f9 Jl I~ It I~ SECONDARY .. ' FC = I 2 7 5 6 9 B 3 4 0 FIRST FCH FCH TERM PANELS PLT PT STRIPS TERIII HOlliE 5W CROSSBAR SWITCHES STRIPS MTG EOPT 200 CONTACT MULTI RELAYS STRIPS JACK,KEY& LAMP OESIG )- I 7 6 8 I 2 3 5 4 9 0 ~ I~ ~ I~ ~ I~ !6 16 ro 16 S P I R T 19- S BAY M 10 90R JCM JCH LCM LCH Of! TER 0 SC Ml SECOt40ARY I~ I~ I~ lg r- lg I~ ~~ I~ 16 """ ! I 3 7 II 8 9 2 6 I 0 [01~ ~Ill I 4 4 7 9 2 5 3 0 6 I J 0 0 STRIPS---, ~ ro 19 19 Fo 16 16 I~ Fo 16 n JL TERM. 8AY I I MATE II J PRIMARY I I ~ I~ IS ~ ~ lg ~ 16 I~ 16 I 7 3 5 9 4 6 8 2 0 1 f- { { MTG PLT EOPT TERM.{ STRIPS PANEL FUSE PT 5W STRIPS SWITCHES TERM 200 CROSSBAR OESIG STRIPS } 7 I I 2 6 3 8 4 " 0 I ~ ~ ~ ~ I~ ~ ~ ~ ro It FRAME I B sr I EXTENSION 2'- II m I~ m m m I~ I~ m m m PRIMARY 6 3 9 7 I II 4 5 2 0 8 -- I DIVISION H, SECTION 13b( 1) INCOMING JUNCTORGROUPING OUTGOING FRAME FRAME FRAME 400 400 0 0 INC. GRP. 400 400 OUT. GRP. 0 0 400 400 1 400 400 2 400 2 INC. GRP. 400 OUT.GRP. 1 1 400 400 3 3 400 400 4 4 INC. GRP. 400 400 OUT.GRP. 2 2 400 400 5 5 Fig. 9-Junctor Distribution (2.28, 2.40) Page 59 OUT. OUT. OUT. OUT. TRKS~ TRKS~ TRKS. TRKS. OUT. OUT. TRK$. TRK$. FRAMES FRAMES FRAMES FRAMES OUT. OUT. OUT. OUT. (2.31) (2.31) (2.32) (2.32) Operation Operation Operation Operation TRAIN TRAIN TRAFFIC TRAFFIC TRAFFIC TRAFFIC TRAIN TRAIN TRAFFIC TRAFFIC TRAFFIC TRAFFIC TRAFFIC TRAFFIC TRAFFIC TRAFFIC COMPLETING COMPLETING COMPLETING COMPLETING lNTERTOLL lNTERTOLL COMPLETING COMPLETING Train-Combined Train-Combined INTERTOLL INTERTOLL INTERTOLL INTERTOLL COMPLETING COMPLETING Train-Combined Train-Combined TOLL TOLL INTERTOLL INTERTOLL TOLL TOLL TOLL TOLL TOLL TOLL 10-Single 10-Single 11-Separate 11-Separate Fig. Fig. Fig. Fig. FRAMES FRAMES FRAMES FRAMES INC. INC. INC. INC. 1) 1) 13b( 13b( KS. KS. INC. INC. 60 60 TR TR INC. INC. TRKS. TRKS. SECTION SECTION Page Page 61/62 61/62 OUT OUT 13b(1) 13b(1) TRKS TRKS Page Page - (2.36) (2.36) SECTION SECTION H, H, Frames Frames AND AND IDLE IDLE t t TRK TRK DIVISION DIVISION Switching Switching OUT. OUT. SEIZE SEIZE SELECT SELECT FRAME FRAME OUT OUT LINK LINK and and LINK LINK OUT. OUT. ~ ~ - ...... Equipment Equipment EQPT. EQPT. SEIZED SEIZED PATH) PATH) LINK) LINK) CHANNEL, CHANNEL, FRAMES FRAMES JUNCTOR, JUNCTOR, BETWEEN BETWEEN TRK TRK CROSSBAR CROSSBAR AND AND Control Control OUT. OUT. CONTROL CONTROL IDLE IDLE JUNCTOR JUNCTOR OUT OUT LINK, LINK, TRK TRK AND AND SWITCHES SWITCHES SWITCHING SWITCHING OPERATE OPERATE INC. INC. (INC. (INC. (TRANSMISSION (TRANSMISSION COWMON COWMON SELECT SELECT - Common Common 1r~ 1r~ FRAME FRAME INC. INC. LINK LINK Between Between LINK LINK CALLED CALLED NUMBER NUMBER TRK TRK AND AND INC INC INC INC IDENTIFY IDENTIFY t t OFFICE OFFICE RECEIVE RECEIVE ~ ~ t t 12-Relationship 12-Relationship NUMBER NUMBER CALLED CALLED - Fig. Fig. SEND SEND OFFICE OFFICE INC INC TRKS TRKS Office 13b(l) ON) 63/64 OR l PANEL TRUNK OFFICE CT l SENDER OFFICES) OF TOLL OUTGOING Page (FOR TO LOCAL DEPENDING SECTION Train TYPE ( H, Combined TRUNK BLOCK DIVISION a CONNECTOR Through FR. -S~E-C~~------~------~~-O~U-TT-RG_l~-~_:rG--j FRAME : (3.04) MARKER CONNECTOR COMBINED 13--Call OUTGOING OUTGOING Fig. I 11----1 BUSY CHAIN GROUP RELAYS MARKER P_A_T_H------i--~oPRI CO"'NECTOR __ H S_M_IS-5--IO_N __ AR£A DECODER P'OREIGN CON"'(CiOR TRANSLATOR TRANSLATOR t HOME: TRANSLATOR SE:C~--r------T-R_A_N FRAME: :r--1: SENDER INCOMING INCOMING LINK ------. "'ECTOR LINK FR. F;...R.I.. __ ~----~------+-~p--~~1 CO"'NECTOR CON CO!oiTROLLER CONTROLLER SENDER LINK __ LINK SENDER SENDER sweo OFFICE OTHER CONTROLLER CONNECrT..:O_R OR FROM TOLL ~-~-N-TC-~TUM_~_:_G LINK AND 13b(1) Office 65/66 OFFICE rt DISTANT LINK TRUNK CT t LOCAL SWITCHING) TO TOLL (INTEATOLL) OUTGOING TRUNK LINK 1 Page OFFICE OUTGOING TO LINK AND CONNECTOR SENDER CONNECTOR SENDER SECTION CONTROLLER CONTROLLER FRAME Train (TOLL H, LINK - - SENDER CONNECTOR BLOCK Separate ONLY) DIVISION a CONNECTOR SENDER TRUNK OUTGOING PANEL I BLOCK 3.30) CONNECTOR ~------~----~ . TRUNK Through FR. 1 SEC. FRAME -t- !I 1 ~I FA. (3.20, TOLL SEC. 4-~--~~------~ FRAME: MARKER I I I COMPLETING CONNECTOR _L OUTGOING PRI. 14-Call OUTGOING ·------ MARKER INTE:ATOLL CONNECTOR PRI. OUTGOING Fig. OUTGOING r--- .,_:;;.- 1...-.,_ TRAIN PATH MARKER PATH CONNECTOR TRAIN BUSY RELAYS GROUP CHAIN I - COMPLETING ----...J 1 TRAINSI\oUSSION TOLL INTERTOLL TRANSMISSION AREA DECODER F"OREIGN DECODER t TRAN:!.LATOR CONNECTOR TRANSLATOR fC~O~N~N~E~C~T~O~R~t------, ~+------~ b., FR. HOM£ SEC. r-t r--~ L...-....J FRAME ·;oR TI II II ! FR. SEC. FRAME b..-T-1 l r : CONNEC INCOMING T PRI. INCOMING SENDER INCOMING CONNECTOR PAl. INCOMING INCOMING .... ... 1 LINK LINK LINK ~ FR AND CONNECTOR CONNECTOR CONTROLLER CONTROLLER SENDER FRAME -r- SENDER LINK - - CONTROLLER CONNECTOR INPUL.SING OUTPULSING ~------~~+ AN0 LINK CONNECTOR SENDER + STATION ~------1~--t~ OTHER FADM TRUNK INCOMING OR SWITCHBOARD TOLL ----1------ 67 67 ICE ICE OFF OFF 13b{1) 13b{1) Page Page TRUNKS TRUNKS SAME SAME STANT STANT I I TO TO OUT OUT D D IIARKER IIARKER SECTION SECTION H, H, {IDLE) {IDLE) DIVISION DIVISION CONNECTOR CONNECTOR IIARKER IIARKER 4 4 0 0 FR FR FR FR 9 9 FR FR (4.05) (4.05) NO. NO. OUT OUT NO. NO. OUT OUT OUT OUT NO. NO. (4.03) (4.03) ern ern ® ® Trunk Trunk TRUNK TRUNK ON ON I I Marker Marker T T OUT OUT to to NFORIIA NFORIIA (OUTPUT) (OUTPUT) I I Outgoing Outgoing (OUTPUT) (OUTPUT) INFORIIATION INFORIIATION DIRECTIVE DIRECTIVE DIRECTIVE DIRECTIVE SEIZED SEIZED 1 1 l l an an l l 1 1 SPC SPC DECODER DECODER CHANNEL CHANNEL DECODER DECODER CARD CARD TRANSLATOR TRANSLATOR BY BY (INPUT) (INPUT) CODE CODE (INPUT) (INPUT) DIGITS DIGITS CODE CODE DIGITS DIGITS FOR FOR TEST TEST 15-lnformation 15-lnformation CONN CONN TRUNK TRUNK BLOCK BLOCK TRUNKS TRUNKS 16-Seizing 16-Seizing CROSS-CONNECTIONS CROSS-CONNECTIONS GATHERED GATHERED Fig. Fig. OUT OUT MARKER MARKER Fig. Fig. TEST TEST LEADS LEADS MARKER MARKER ------• ------• ANO ANO SPC SPC ~~~~~NG ~~~~~NG FROM FROM ON ON AND AND DECODER DECODER Tl Tl TRANSLATOR TRANSLATOR DECODER DECODER FROM FROM NFORIIA NFORIIA I I CHANNEL CHANNEL OR OR CARD CARD FROM FROM SECTION 13b(l) TRUNK SEMO£R IIICOUING DECODER MARKER BLOCK LINK i"'"- SENDER ~ CONNECTOR CONNECTOR I 1 INCOMINGCONNECTOR 1 OUTGOINGCONNECTOR I __J I IMCOIIIHG OUTGOING SECONDARY PRIMARY BAY BAY IIICOUING OUTGOING PRIMARY SECONDARY BAY I I BAY CALLING SEIZED IIICOIIIIIG 20 JU!CTDRS OUTGOING1-- - TRUNK I I TRUNK TWENTY TWENTY INCOMING OUTGOING./ ...... _LINKS LINKS INCOMINGFRAME -- OUTGOINGFRAME Fig. 17-Establishing a Channel (4.08, 4.09, 4.25) Page 68 69 69 Page Page 13b(1) 13b(1) RES. RES. RCDR. RCDR. SECTION SECTION RELAYS RELAYS PANELS PANELS PWR PWR H, H, PANEL PANEL UNIT UNIT UNITS UNITS ~ ~ ~ ~ REL.UNITS REL.UNITS AMP. AMP. FR.IDENT. FR.IDENT. DET. DET. FR.IDENT. FR.IDENT. MISC. MISC. REL.UNITS REL.UNITS CONN. CONN. TROUBLE TROUBLE FUSE FUSE 1- 1- -JACK -JACK j j ' ' ~J ~J I I ! ! I I il il II II :, :, !I !I l l !: !: f-- ,...... _ ,...... _ I I II, II, i i · · '' '' ij ij ! ! I I j! j! D D I:! I:! DIVISION DIVISION _] _] --f-' --f-' _j_, _j_, d d ______ / / /i /i OONT OONT & & / / ------ BSY BSY TEST TEST CKT CKT RELS RELS RLS RLS 8 8 .l_H .l_H RELS RELS T C.ONT C.ONT MISC. MISC. 'ONT 'ONT ROUTING ROUTING RECORDING RECORDING CONV CONV t t PAT PAT WALK WALK & & T&L T&L & & MKRS MKRS (4.23) (4.23) &CONT &CONT SPARE SPARE MAG,SLEEVE MAG,SLEEVE & & SPARE SPARE DIGIT DIGIT SPARE SPARE OFL OFL mENT mENT CODE CODE CLASS CLASS JCTR JCTR JCTR JCTR C C CHECK CHECK SENDER SENDER C.ONT C.ONT HOLD HOLD GUARD GUARD CHANNEl CHANNEl rP rP Frame Frame TIMING TIMING / / I' I' •RAM< •RAM< I I ------ ______ _ _ 7 7 1- ~------Ill ~------Ill 1------t'!•.tc---~-- v v II. II. I I ' ' ! ! I I / / TEST TEST RELS RELS REL REL 18-Marker 18-Marker /_- / / TB' TB' RELS RELS ------2-a RELS RELS fMISC1 fMISC1 I I - ------ PREF PREF 511 511 8 8 TRUNK TRUNK BLK BLK (SPAF!f)JP (SPAF!f)JP JUNCTOR JUNCTOR Fig. Fig. I I FR FR CONN CONN t t FR FR START&END START&END • • t t MISe! MISe! FR FR & & 2-o lEST lEST [DC [DC TErT TErT RES RES & & I"' I"' JP JP SPARE SPARE CONTROL CONTROL CHANNEL CHANNEL BLK BLK CHECK CHECK OUTGOING OUTGOING TRK TRK INC INC CB[ CB[ --- ------ /ouT /ouT I I FRAME FRAME M!SC M!SC JP JP TRK TRK ~~~~=r=:.:lllll=====::d::==::il!l/ ~~~~=r=:.:lllll=====::d::==::il!l/ FRAME FRAME I I I I l l -~GROUP -~GROUP r.===;::===;::::b:::::;:::b==;;rli!JI r.===;::===;::::b:::::;:::b==;;rli!JI rJI!:jf~J~gM~I§S§C§M~IS~C;§B§L~ rJI!:jf~J~gM~I§S§C§M~IS~C;§B§L~ II II l-----T~R~UN~K~---lllll------~~1 l-----T~R~UN~K~---lllll------~~1 ~------~------~111~------~~~------~, ~------~------~111~------~~~------~, ------4~8j'-'------~ ------4~8j'-'------~ ~~------.LllL.LI ~~------.LllL.LI i----- '------ !'li !'li 11 11 1 I I I I I. I. li li ·;:~ ·;:~ i i il il ll ll ll "V "V li li l!.;: l!.;: 1 'i 'i ! ! l; l; Ill~~~~ Ill~~~~ II II 111------+----1/ 111------+----1/ l__J l__J --~TI. A~- - - & & --tH~JMISC --tH~JMISC RES. RES. CONN. STRIP STRIP & & REAR REAR FRONT FRONT TEST-· TERM. TERM. REL.UNITS REL.UNITS TERM. TERM. CROSS CROSS REL.UNITS REL.UNITS STRIPS STRIPS FR. FR. TUBE TUBE JACKS JACKS COVERS COVERS CASING, CASING, I I - :"' :"' SECTION 13b(l) INCOMINGFRAME 0 OUTGOIIIG FRAME 0 IIICOMIIIGFR COIIII 0 OUTGOINGFR COliN 0 HOME I MATE - I MATE I L p , p s s 20 J:.CTORS r I ' ....____ _,I T T I il-L ______l L -----, I I I I PAIRED I I PAIRED f'RAIIES I FRAMES INCOMINGf'R COliN I ~-+-, OUTGOI fiG FR CONN I : r- t-----.-----~ I t---H-OME---,~---IIA-TE----Ir- J : ...1 I I HOioiE I MATE I I I I I L+------...J I I I I s L_ r- _.J D MARKER D IIICOIIING FRAME I OUTGOlNG FRAIIE I Fig. 19-Pairing Switching Frames (Home and Mate Operation) {4.28) Page 70 DIVISION H, SECTION 13b(1) FROM GATEWAY INC SW80 OR OVERSEAS TRK CABLE I FROM DISTANT D tAL TOLL OFFICE INC OR DIAL SWBDOR TRK LOCAL OFF ICE I FROM DISTANT t.IF TOLL OFFICE IIIC INCOMING OR MF SW80 OR TRK FRAME LOCAL OFF I CE I I DP FROM LOCAL CAMA SXS OFFICE INC TRK I I MF FROM CAiolA LOCAL OFF I C£ INC TRK MF FROM INC REG CAMASENDER LINK FRAME MF CAMA REC SENDER INC REGISTER LINK FRAME OP IN INCOMING REGISTER MF OUT TO ICAMAI CAMASOR r u r MF SENDER LINK FRAME MF MF INCOMING REC SENDER OP SENDER LINK FRAME DP INCOMING SENDER ovs SENDER LIIIK FRAME MF OVERSEAS u REC SENDER Fig. 20-Access to Incoming Senders-Office Equipped With Flat-Spring MF Incoming Sender (4.30, 4.53) Page 71 SECTION 13b(l) t.!F FROM GATEWAY 2-WAY SWBD DR TRK OVERSEAS CABLE I MF FROM DISTANT TOLL OFFICE OR INC t.!F SWBO OR TRK LOCAL OFFICE I OP FROM0 I STANT TOLL OFFICE OR INC INCOMING DIAL SWBD OR TRK FRAME LOCAL OFF ICE I I DP FROM LOCAL CAMA SXS OFFICE INC TRK I I t.!F FROM CAliA LOCAL OFFICE INC TRK t.!F FROM INC REG CAMA SENDER 1-- e--- LINK FRAME I- ~ t.!F CAliA REC SENDER IIIC REGISTER DP Ill L I IlK FRAME INCOMING REGISTER t.!f OUT TO (CAliAI CAliA SDR 1U l FURNISHED FOR DP TRUNKS ONLY INC REGISTER LINK FRAt.!E DP IN INCOMING t.!F OUT TO REGISTER I NON-CAllAI t.!F SDR lUI t.!F SENDER LINK FRAME t.!F 1 t.!F REC INCOMING SENDER OVERSEAS SOR LINK FRAME t.!F OVERSEAS u REC SENDER Fig. 21- Access to Incoming Senders-Office Equipped With Wire-Spring MF Incoming Sender (4.30) Page 72 DIVISION H, SECTION 13b(l) RE SST I ANC E,_ FUSE PANELl PANEL MISC. T. S. I I I bt___l I I II I SDR. T.S. ' ' NOTES: I. FRAME IS SHOWN EQUIPPED WITH BOTH 0 P AND M F P INC. SENDERS FOR ILLUSTRA I I TIVE PURPOSES ONLY. I I / IR / JR INSTEERING AND REGISTER ,...-- IR IR IR I INCOMING R EGISTER ~ CONTROL "~~T RECAPTURE - RCP •If· ~ OUTSTEERIN G tr: I ·'· = CODE CONY ERSION ~ co'i.v - INTERSENDE R LOAD CONTROL--- - o"z.i I AND ROUND TRIP TRANSIT - ARC CONT TIMING OUTSTEERI NG •"' Jr~ CODE CONY ~ ERSION til~ co'i.• ~ INTERDIGIT AL TIMING f~l ~ I r---- fl"l INTERS END ER LOAD 1-- ARC CONTROL A NO ROUND TRIP CCNT TRANSIT Tl MING - AUTOMATIC REOROER CLASSIFICAT ION 3 -10! 4 FRONT VIEW Fig. 22-lncoming MF and DP Sender Frame-4M Offices (4.45) Page 73 SECTION 13b(1) MISC T.S. SOR T.S. ~ L FUSE PANEL I I Ul " II ~~PI NOTE: FRAME IS SHOWN EQUIPPED WITH BOTH D.P. AND M.F.P. INC. SENDER s FOR ILLUSTRATIVE PURPOSES ONLY. 2 SPARE SPACE INTERSENDER LO~ ~ LCT I JOUT PULSE CLASS 1./ IR I OP CLS """""' ,....[ IR SPARE SPACE INSTEERING AND IR ARC~AUTOMATICREORDER REGISTER IR ) CLASSIFICATION TRUNK TEST- IR TRK TST OP CONT OUT PULSE CONTROL MULTI INCOMING REGISTER [ FREQUENCY ·-611 CONTROL ] PULSE GENERATOR- II IR CONT P GEN R CONT RINGING CONTROL PULSE 3'-4-1 /8" INCOMING RECAPTURE ( ) TRUNK CLASS RCP TRK CLS SENDER SENDER TIMING- JOUT PULSE COUNTING O SPARE SPACE INTERSENDER LOAD CT LCT JOUT PULSE CLASS oo•nooc ""'"•- [ v IR OP CLS IR ) IN PULSE COUNTING INSTEERING AND IR IPCTG REGISTER IR TRUNK TEST- IR JOUT PULSE CONTROL IR TRK TST OP CONT DIAL PULSE RECAPTURE ( ) PULSE GENERATOR- 3'-4-1 /8" RINGING CONTROL INCOMING RCP P GEN R CONT SENDER TRUNK CLASS OUTSTEERING ( TRK CLS J 0 STR ) SENDER TIMING- OUT PULSE COUNTING SDR TMG OP CTG = CODE CONVERSION [ C CONV INTERDIGITAL iJ]GENERAL CONTROL TIMING lOG TMG AUTOMATIC REORDER ARC CONT CLASSIFICATION- - 4'-7-1/2" FRONT VIEW Fig. 23-lncoming MF and DP Sender Frame-4A Offices (4.45) Page 74 75 75 1) 1) 13b( 13b( Page Page ""'NEL ""'NEL SECTION SECTION SUPPLY SUPPLY JK JK H, H, a a LAMP LAMP (4.45) (4.45) FILAMENT FILAMENT STRIPS STRIPS 0 0 2 2 I I DIVISION DIVISION KEY, KEY, PANEL PANEL J-67468A J-67468A ENDER ENDER J-674686 J-674686 ENDER ENDER Offices Offices SENDER SENDER ECEIVER ECEIVER USE USE ERMINAL ERMINAL MISC MISC s s - 1- ,... ,... - s )- ' ' .-' .-' }T }T ' ' )-R )-R ) ) F 1' 1' T T I I Frame-4A Frame-4A ---~·1 ---~·1 I I ar ar Sender Sender I I 2'- I I I I I I II II I I lll~r------ { { { { { { { { Multifrequency Multifrequency UNIT UNIT UNIT UNIT AND AND UNIT UNIT RECEIVER RECEIVER TEST TEST CONTROL CONTROL MARKER MARKER "'""""'0" "'""""'0" CONTROL CONTROL MF MF CONVERSION CONVERSION AND AND 24-lncoming 24-lncoming TRUNK TRUNK CODE CODE Fig. Fig. """"' """"' OECODER OECODER TIMING TIMING PULSING PULSING AND AND OUT OUT s· s· ·- II II SECTION 13b(1) FUSE THIRD SDR ON FRAME -t-- I d l ij : ~-~~~~c=-=" =~ --o~~--:.;~~ }-AREA CODE UNIT MF RECEIVER ------t--1 j 1-t-:::======r~:;---;I }- PRIORITYELECTRICAL SERVICE BUSY ANDUNIT J95102B I l I! CODE CONVERSION UNIT I !' [i }- sEizuRE UNIT -----t-1 : It REGISTRATION UNIT 1 TOMEO"' • TEST ""'T ~ 11 ELECTRICAL BUSY UNIT T ••• N... FLA'" FWD r i }- D 1 ::~TPULSONGUNIT -----: { ! ------}--TRUNK CONTROL UNOT I -· : ___ ·· ···-·__ ·-·- ___-~. ___co .c: __ · !'-~~~~~-~c, .. t--- JACK El KEY PANELS ( I I : ' I I I i I I J jl FIRST SDR ON FRAME -+-I II I I I I . I I I I l r--- f------J67467B ovss IOl t ~--__---____-"=-- --~-=~ ~- -J6 7467A Fig. 25-0verseas Sender (4.45) Page 76 77 77 13b(1) 13b(1) Page Page OF OF OF OF LEADS LEADS SENDERS SENDERS LEADS LEADS SENDERS SENDERS 011£ 011£ ONE ONE 12 12 12 12 TEN TEN TEN TEN SECTION SECTION 4.50) 4.50) PRIMARY PRIMARY SWITCHES SWITCHES H, H, 6 6 6 6 6 6 6 6 "' "' I I I I (4.48, (4.48, 4 4 4 4 9 9 9 9 DIVISION DIVISION ~ ~ ~ ~ r----\ r----\ ~ ~ A A I' I' lA lA 18 18 1'8 1'8 Senders) Senders) lA lA 3A 3A 18 18 38 38 3 3 3 3 8 8 8 8 DP DP r----\ r----\ ~ ~ r----\ r----\ ~ ~ and and I~ I~ I~ I~ IL, IL, IL, IL, (MF (MF LEADS LEADS LEADS LEADS 6 6 LEADS LEADS 6 6 LEADS LEADS 6 6 6 6 Spread Spread GROUPS GROUPS SENDERS SENDERS Link Link TRUNK TRUNK LEADS LEADS LEADS LEADS ,- LEAD!: LEAD!: r- ,- r- LEADS LEADS OA OA 2A 2A OB OB 28 28 I I Frame-Sender Frame-Sender I I 6 6 OA OA 6 6 O'A O'A 08 08 O'B O'B LINK-12 LINK-12 LINK-12 LINK-12 LINK-12 LINK-12 LEADS LEADS LEADS LEADS LINK-12 LINK-12 LEADS LEADS LEADS LEADS r----\ r----\ ~ ~ ~ ~ ~ ~ 6 6 6 6 6 6 6 6 OA OA lA lA 08 08 IB IB Link Link 1' 1' !' !' (j (j o• o• 0 0 0 0 5 5 5 5 I I I I 0 0 0 0 ~ ~ ~ ~ r---\ r---\ ~ ~ ' ' , , 12 12 12 12 12 12 12 12 26-Sender 26-Sender Fig. Fig. SWITCHES SWITCHES SECONDARY SECONDARY OF OF VERT VERT OF OF LEADS LEADS TRKS TRKS TRKS TRKS LEADS LEADS LEADS LEADS 6 6 PER PER ONE ONE ONE ONE 12 12 12 12 TEN TEN TEN TEN ISL OSL FOR !'OR DN lSI. FOR SWITCHES LEADS WIRE WIRE - ONLV FOR 4 SE!!IIER e - 4 'VI"' GROUP CONNECTING LEADS STRIPS STAll'S STRIPS STRPS SENDER TRUNKS fRAAI£5} LtADS AND OSL XCONDARY PAIUARY POINT POINT POINT. POINT IHCONING PROYIDtD LIIIK TRUNK TEAiwt. W CROSS NUUKA 100 CLASS TERiwt. TEAioL 'II" SWITCHES FROM 100 "1ST" SWITCHES "Sf" FAOU FOR TEAM. 100 100 ( r--' f-----: '---' (4.53) I ICC ICC 1• ""'\ ""'\ ~ ~ ' • ICC Q!~ 0' • .\' 4 4 I I tCI :"occ Frame :a:_~d- tea ',§; -....r -..r -....r 'r I L I • IC 0' ""'"'" a a 3 3 I Unk 111=-~!!-=.-.&- ~flliii=.J;;-.--.1!.. ICA oc• 0 f -..r -..r -..r -..r OSC ore ~11111111 . tllllllll O'f#OIO'ro nnrrnn 0 OITITITIJ: 0' 0 If< 1- 7 2 2 7 A p p lb:d s s lA IS I' IS< 3A 18 lfC 38 t'B lA VY vv yy yy Sender I I 3-llt osc Oft liAR ~ • . • 1$C T -! I~.!J(I -v- -..r -..r - ~ nn: 1 8 -:1 Outgoing I • n -SPLIT -...r -..r L or n 5 o '11:¥JO' MNa. .... ~111111111: ~11111111 OITITITll OltYFOIO'I'OI c 0 rO-v-1 r5-..rl\.r r r ~ p p s s 2A O'A OA 28 08 0'8 vv vv DB vv OA ~Fe lose Ina 4=:4ll.'=lf!E:'~~~t:: -k~ ~?'q_ f-E£.::-.::-:I:o-t:E .!'! L -Incoming tSL OSL. 27 FOR FOR BOTH {"'-{ SWITCHES WIRE TRUNK WIRE - ISL RELAYS FOR a S£RVING OSL 5 Fig. 4 UULTI- PANEL KEY.ANO tCATE ACT PRttwtAAY AND ACITOAS POINT K, POINT POtNT ON GIIOUPI OUP ITCH£5 SENDERS UP ITCH£S CAP sw lSI. OF 100 LA JAC 10 sw IT ONLY UN TRAFFIC FRAME RELAYS, RESISTORS SENDER AND MISC CONTROL [PROVIDED FIRST 13b(l) 78 Page SECTION 79 13b(l) Page SECTION H, DIVISION (4.54) B Operation FRAME SENDER LINK p CONNECTOR SENDER LINK CONTROLLER GROUP LINK Controller 28-Link Fig. SECTION 13b( 1) LINK CONTROLLER TEST CUT-IN RELAYS ON CO NTROLLER CONNECTOR •o• o F EACH 8ROUP FUSE PANEL ...~ 3 cc 0 3 cc 0 ~CON'TR OLLf:R CONNE C'TOR CONTROLLER- CONNE CTOR ~·sCB 0 3 CB 0 cc cc ~ (All CA 0 3 CA 0 ~QI3 .._._ MIJC.Rf l~CONOS, TERM. STRIPS AND R ES. FOR CONTROLL' CONNECTOC L~R CG (A) I) GC (A) (0) TRIPS !'-"'"-.....___, ~ CONT ROLLER UNIT r /'' ~ ~ ~ - MISC . Rf:L.S. •- \ ' JACK, KEY, AND LAMP MNfL CONTROLLER UNIT LC (A) lOl 3-3 Fig. 29-Unk Controller and Connector Frame (4.55, 4.57) Page 80 81 81 13b(l) 13b(l) Page Page CONTROLLERS CONTROLLERS LINK LINK LINK LINK SECTION SECTION ACCESS ACCESS All All H, H, CONTROLLERS CONTROLLERS CONNECTOR CONNECTOR HAS HAS CONTROLLER CONTROLLER EACH EACH TO TO DIVISION DIVISION ~ ~ ~ ~ EJ-< EJ-< ~ ~ CONNECTORS CONNECTORS CONTROLLER CONTROLLER (4.58) (4.58) CONN CONN SL-0 SL-0 Controllers Controllers SDR SDR LK LK Link Link to to CONN CONN Access Access SL-1 SL-1 SDR SDR LK LK Link Link CONN CONN SL-2 SL-2 SDR SDR LK LK 30-Sender 30-Sender Fig. Fig. CONN CONN SL-3 SL-3 SDR SDR LK LK "' "' AND AND OTHER OTHER CONNECTORS CONNECTORS SENDER SENDER TO TO LINKS LINKS STRIPS STRIPS CONTACT FIRST RELAY CUT-IN THIRD MARKER CONNECTOR SECOND CONNECTOR MULTI- CONNECTOR TERMINAL TERMINAL J67408C J67408B ~ c- I t-- " } ,I J I I f=J J -- 4.66) (4.62, .. Frame f.-f-. !o-f- H 1-r' 1---t- 1---1-- -- Relay -- I ---- .. f - =-~ . 31-Biock -- r ~- Fig. ;L. I I I;=--- I ~ 6" ~ I I I I I f-- I i II'- -- -H ) ELS- ( PAN ETC. TBC 1) BLOCK PANEL CONTACT FUSE RELAYS 13b( JACK CONNECTOR TRUNK PREf:.REN<:f.. RELAYS, MULTI- 82 SECTION Page DIVISION H, SECTION 13b(1) FUSE { PANEL MT UNIT MISC ~ ~g· jg ~~~CHAINIICHAIN ~ ~1- TERM INAL TERM. DC IJJ DC IQ]I' STR IPS STRIPS- ~~CHAINI! rn ~~·~ CHOICE SCI' MC' rm ~0 121 §0 [ffi SCI ~D ~ MC IQJO DC' 1!!1 sc' IQ!Drill 00 ['....__ I§] sc IQID[!J DC IQJD 3 sEe [!) DCI IQIO liD SCI' IQJD ~ MC' IQIO l8J SCI IQJO ~ MC IQJO ~MULT I-CONTACT RELAYS [§] sc' IQ!Orill DC' IQIO AND TERMINAL STRIPS ~ sc IQIO!ill DC IQID 2 II' -6" ~B [i] DCI IQIO 1m SCI' IQIO ~ MC' 1210 1m SCI IQI[ [~ MC IOT1 liD sc' IQIOIW DC' IQIO 1m sc IQ!DliJI DC IQJO I s8e !ill DCI jg0 JACK s liD SCI' IQIO ~ MC' IQIO liD SCI IQJO liD MC ~0 1- MULT I-CONTACT RELAYS ~ sc' 12101!] DC' IQlO !. AND TERMINAL STRIPS ~ sc IQIOiiJI DC IQJO 0 s'ii'e ~1 DCI Pll I MTG PLATE I 4 MTG l------4 MTG 2 _,..,...... PLATES- I---PLATES 3 1- RELAYS AND RESISTORS CONN NO. 4MTG- l---4 MTG --t--o_/ PLATES- I-- PLATES I ~ J67449Y Ilol4>------4'- 0 1/2 n ____ _...I Fig. 32-Decocler Connector Frame for Separate or Combined Train Offices (4.68, 4.70) Page 83 for for DECODER DECODER Separate Separate 4.70) 4.70) Frame Frame NO. NO. FRAME FRAME Combined Combined to to ASSOC ASSOC (4.68, (4.68, OF OF Offices, Offices, CONNECTOR CONNECTOR Connector Connector Expanded Expanded -~NO. -~NO. Train Train ~CONNECTOR ~CONNECTOR (OJ' (OJ' J67449AA J67449AA Operations Operations Decoder Decoder Offices Offices or or Separate Separate Combined Combined Offices Offices 5/8 5/8 in in 2'-o 2'-o Train Train Use Use Train Train 33-Supplementary 33-Supplementary 6" 6" F'eg. F'eg. II'- 13b(1) 13b(1) 84 84 Page Page SECTION SECTION 85 85 13b{1) 13b{1) Page Page SECTION SECTION H, H, (4.75) (4.75) UNIT UNIT AND AND AND AND AND AND DIVISION DIVISION STRIPS STRIPS STRIPS STRIPS PANEL PANEL STRIPS STRIPS Offices Offices CONTACT CONTACT PANEL PANEL JACK, JACK, NUMBERS NUMBERS USE USE CONNECTOR CONNECTOR LAMP LAMP KEY, KEY, RELAYS RELAYS RESISTORS RESISTORS TERM. TERM. TERM. TERM. TERM. TERM. RELAYS RELAYS MULTI MULTI Train Train } } }F }F I I 0 0 -~~ -~~ I) I) 0 0 2 2 J J (2 (2 II II (I) (I) II II ...... C C - - - - - - A A @l0 @l0 1210 1210 ~0 ~0 @10 @10 ~0 ~0 IQJO IQJO @10 @10 @lO @lO @10 @10 @10 @10 @10 @10 [I~= [I~= @10 @10 Ill Ill Separate Separate in in MCA MCA MCA MCA MCA' MCA' CHAIN,MISCJ CHAIN,MISCJ MCI MCI MCI MCI MCA' MCA' MCB MCB MCB MCB MCI MCI MCA MCA MCA' MCA' MCB MCB MCA MCA MCA' MCA' MCB MCB MCl MCl MKRI MKRI Use Use f f IT IT for for MKR MKR 1!1 1!1 1!1 1!1 ~ ~ [!] [!] [!! [!! ~ ~ 1!1 1!1 ~ ~ ~ ~ ~ ~ 1!1 1!1 [!] [!] 4 4 [ [ [ [ II II ~ ~ t-- t-- 1-- s.!" s.!" IL IL l l 4'- - - - Frame Frame @10 @10 @10 @10 1£10 1£10 @10 @10 @10 @10 @]0 @]0 @10 @10 @10 @10 @10 @10 @10 @10 1£10 1£10 @10 @10 [ [ [ [ CHAIN CHAIN MCA MCA MCA' MCA' MCB MCB MCI MCI MCA MCA Connector Connector MCA MCA MCA' MCA' MCB MCB MCB MCB MCI MCI MCI MCI MCA' MCA' MCA MCA MCA' MCA' MCB MCB MCI MCI ~ ~ ~ ~ [!] [!] ~ ~ [!] [!] ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ [!! [!! [ [ [ [ rTC rTC - - - - - - I I II II II II (I) (I) (I) (I) (0) (0) (2) (2) (0) (0) (2) (2) 6" 6" 34-Marker 34-Marker '-I '-I I I I I ,._ ,._ Fig. Fig. UNIT P.C.I. & SENDER STRIPS OUTGOING REVERTIVE JK.PANEL (4.76) TERM. 674130 J 1-r-- I- t- to- Frame T f FRAME Sender I .. 0 I 2-10 SENDER l OUTGOING 35-0utgoing ~ r' Fig. -I PANEL PANEL JK. FUSE 13b(l) 86 Page SECTION 87 87 1) 1) 13b( 13b( Page Page SECTION SECTION H, H, ,L4 ,L4 EVEN EVEN COR COR GROUP GROUP OR OR CKT. CKT. ED-91976-01 ED-91976-01 TO TO GROUP GROUP ALARM ALARM NETWORK NETWORK OVTPUi OVTPUi B"ATTER'I' B"ATTER'I' ALARM ALARM SUB SUB REO. REO. PER PER PANEL PANEL J98609C J98609C TEST TEST 8 8 IN IN fo!EUTRALIZATIOH fo!EUTRALIZATIOH AS AS LINE LINE FRAMES FRAMES LS LS 98609A 98609A ABLE:S ABLE:S TEST TEST DIVISION DIVISION OSC. OSC. J J TO TO C C PANEL PANEL RES. RES. & & J98609C J98609C JACKS JACKS JACKS JACKS E0-91976-01 E0-91976-01 POSITIONS POSITIONS CKT., CKT., OR OR (4.81) (4.81) TEL. TEL. FLOOR FLOOR OSCILLA'TOR OSCILLA'TOR LEADS LEADS EVEN EVEN D-91985-01 D-91985-01 986090 986090 LANK LANK UNI'T UNI'T ISTG. ISTG. 'TRANSFER&. 'TRANSFER&. APPLIQUE APPLIQUE UNii UNii CAPACITY CAPACITY PER PER U,L3 U,L3 DISTRIBUTION DISTRIBUTION A A ) TRANSFER TRANSFER OISTG. OISTG. NBO. NBO. SENDERS SENDERS OISTG. OISTG. PAD PAD SENDER SENDER 8 8 E E Frame Frame f-- u u I I I I I I I I I I I I I I I I I I I I I I I I I I I I ·r: I I I I I I I I I I I I ~ ~ I I ., ., c. c. I I .. .. • • ./ ./ ~~~ ~~~ ~~~ ~~~ :~~ :~~ 1st 1st TST TST -- Supply Supply TIO""' TIO""' R7RIO R7RIO TRK TRK - RO RO ~~~ ~~~ ~~~ ~~~ :&: :&: Tif Tif TO TO Current Current ODD ODD EVEN EVEN TIORIO TIORIO R7RIOTOTI R7RIOTOTI :&I :&I :;; :;; lfi lfi llf llf TEST TEST RO RO I~ I~ TO TO ~~~ ~~~ SDR SDR 121 121 117 117 TOTt TOTt ~ ~ 1------ ~ ~ !----- I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I ll ll :::i :::i ...... ~ ~ - N N "' "' r r h h ~. ~. li li ,- 36-Multifrequency 36-Multifrequency ru! ru! 0 0 0.; 0.; z z -..J -..J .._Q. .._Q. ic'>l'f~ ic'>l'f~ I I " " "' "' CUP CUP -I -I R R D D ::.li ::.li Fig. Fig. <0 <0 GR GR 00 00 SH SH OR OR CKT CKT FOR FOR PANE PANE TO TO SUB SUB NBG. NBG. OUTPUi OUTPUi AND AND TEST TEST IN IN FRAMES FRAMES TO TO CABLES CABLES OSC. OSC. POSITIONS POSITIONS SWBDS. SWBDS. REQUIRED REQUIRED OR OR LEADS LEADS ADDITIONAL ADDITIONAL ODD ODD AS AS fOR fOR DISTG DISTG POSITIONS. POSITIONS. 8) 8) NBD. NBD. SENDERS SENDERS SENDERS SENDERS SENDER SENDER PANEL DIRECT UNIT J67444DE J67444DF DELAY OF OF .16744400 Dl JACK OVERLOAD CANCELLATION J67444DII UNIT UNIT UNIT AND (4.83) TRIGGER CANCELLATION INDICATOR .167444 UNIT J67444DA J67444DC TRAFFIC ROUTE ROUTE STRIPS LAMP CONTROL CANCELLATION CONTROL CANCELLATION OUEUE UNIT ROUTE UNIT INDICATOR QUEUE UNIT Frame PANEL J67444DN KEY, TERM. FUSE FR AUTOMATIC SENDER MISC UNIT REROUTE DIRECT ALTERNATE TRUNK J67444DG MANUAL J67444D CHECK CHECK ALTERNATE: MANUAL ROUTE OUEVE TRAFFIC - I- } } } ~ 1- 1- } Control _} I~ Traffic CONT 38- TR uuu uuu Fig. uuuu uu I ~2'-of~ - 11-6 ALT) and a UNIT UNIT J67424EO Supply STRIPS - RELAYS KEYS PANEL{REG PANEL TOLL CONNECTOR RESISTORS RESISTORS a TRANSFER J67424E8 COMPLETING a J67424EA J67424EH TERMINAL FUSE JACK J67424EF 7424EE PLIFIERS INTER J67424EG J67424E 7424EC PLIFIERS 7424EE NNECTOR M NERATORS LL NERATORS PPLY MPS XING XING J6 .16 Frequency J6 AM TO Ml LA }~ }Ml } }GE }AM )-GE ssu J - - F I r- 6 F 0 8 13 (4.82) 34 H' 27 H 20 F - - ALT ALT 39 AL ALT ALT ALT ALT ~ E 5/8"~ 7 0 14 28 21 35 G 6 A Frame I 0 ' Identification ' H' 6 F 13 27 34 20 2'- 39 I REG REG RE~ REG REG 13b(1) Control 7 , 14 REG A 35 A G 0 28 21 c E F 'REG G H I ' .I l.LJ ~ ---- -Frame 1--- 88 37 I - -.., -- SECTION Fig. Page 89 89 13b{1) 13b{1) lATE lATE AREA AREA AREA AREA Page Page AREA AREA GN GN I I NTERMEO NTERMEO I I FORE FORE FOREIGN FOREIGN FIRST FIRST TRANSLATOR TRANSLATOR TRANSLATOR TRANSLATOR LAST LAST FOREIGN FOREIGN TRANSLATOR TRANSLATOR SECTION SECTION H, H, DIVISION DIVISION 4.157) 4.157) (4.127, (4.127, CONNECTOR CONNECTOR CONNECTOR CONNECTOR FIRST FIRST LAST LAST TRANSLATOR TRANSLATOR TRANSLATOR TRANSLATOR INTERMEDIATE INTERMEDIATE CONNECTOR CONNECTOR TRANSLATOR TRANSLATOR Translators Translators Card Card to to Access Access 39-Decoder 39-Decoder Fig. Fig. - (LAST) (LAST) (FIRST! (FIRST! DECODER DECODER OECOOER OECOOER (INTERMEDIATE! (INTERMEDIATE! DECODER DECODER HOllE HOllE TRANSLATOR TRANSLATOR HOME HOME TRANSLATOR TRANSLATOR TRANSLATOR TRANSLATOR HONE HONE ---- r--- 1-----,----- UNIT ~" UNIT ROUTING STRIPS "'" UNIT & PANEL CODE WATS TERMINAL r- )-ruSE ' }""'~ ;-----VAC. I [' I: li ,.JI .JI 1! I I - - - - _=-:::~' _= • 1------=--,Jii -=~= 1------.,Jf _ {4.147) -::_=-===-·~= Frame P------.JI ~------h n------+.1' 1 I I~ i I J!:L I !If I1H="""''-' { 40--Decoder ·:.-~:-~~·~--:::~:~-~;~~h,p·=-~;;;;. Fig. ~~~~~~~+-~~~1&: - ~ - f---- ~ f---- i ,n------.L,Ii ______ "'::::====:7 I P I' I itf------4 ;t------1 I I I;:=: IUMT------,-I'I!Il,------'-.::::::::::=:;:lr!-IN t _l / ' ~ i ; I \ ( ( \ i '. I I r! I I r:,r~~~Cj-=-~~-=i=:._-~_ ! L _ L --W ---~ UNIT UNITS--'--; STRIPS~ RELAYS STRIPS C 1.1 RELAY SUPPLY TERMINAL RCDR GRO ROUTE TERI\AINAL 1\AKR & TaL 13b{1) 90 SECTION Page 91/92 13b(1) Page SHOW WITH IS SECTION COVERS ON WIDE. H, END REMOVED. F"IGUkES SIDE CABINET TRANSLATOR CABINET 2-0 GATE MTO. NOTES: I. 2. ETC. REL. RES., DIVISION UNIT CONN. CHOPPER CONTROL REL. -TRANSISTOR & SUPPORT BAR & BAR AMP. STRIPS RELS., PANEL PANELS F"ILTCR TRANSLATOR lA NDEX ~8~~'l.~~~NJ>Nn F"USE PHOTO MOTOR SLAVE LAMP TERM. CONT. UNIT CARD CODE UNIT MISC. CODE RES. BAT. PANEL I (4.148) ~ J"- I I ,~ J ..... ... I I t.J -- ___ ~ 'I 0 " !! II c ---- f===~ ~ R l Cabinet + B + ..! - f- f- - SlOE - - - - ,...n - - - - Translator B ------~ - - - - - - - - - - - - 8 SlOE REMOVAL ~ s-2! 41-Card OET AMP REMOVAL B 010 Fig. B SELECTOR UNIT UNIT CARD CHANNEL CHANNCL I - - r-- f-- r--- r- 1-- r- 1-- ~ E ~ ~ f- r- f-- ~ r- ~ ~ f- - B + + +:--- I j. I I 1 "l .., Lr "'I~ ~ ~ N N 93/94 93/94 13b(1) 13b(1) 41 41 1 1 Page Page CG CG 4.170, 4.170, 4.174, TB7 CCU7 CCU7 COLC COLC IND2 IND2 SECTION SECTION 1 1 1 1 H, H, 4.151, 4.151, TP2 TB4 TB4 CCU4 CCU4 OF OF CLU7 CLU7 GEU7 CJ CJ CJ CJ 8 8 F F PC PC BLOCK BLOCK (4.150, (4.150, 4.189) 4.189) TPI TPI DIVISION DIVISION TB2 TB2 CCU2 CCU2 GEU4 GEU4 CLU4 CLU4 CJ CJ CJ CJ GRP GRP Card Card TRUNK TRUNK TRK TRK 4.186, 4.186, TPO TPO TBI TBI CLU2 CLU2 CCUI CCUI GEU2 GEU2 C:=J C:=J CJ CJ I I E E 1 1 END END Translator Translator 4.183, 4.183, TPC TPC TBO TBO CLUJ CLUJ CCUO CCUO GEUI GEUI ARU7 CJ CJ CJ CJ CLASS CLASS I I GROUP GROUP 42- 1 1 1 1 Fig. Fig. TS2 CLUO CLUO CCT7 CCT7 TCU7 GEUO GEUO ARU4 ARU4 [==:! [==:! 1 CJ CJ D D PC PC I\ I\ SEP SEP TSI TSI CCT4 CCT4 ARU2 ARU2 GET GET TCU4 TCU4 CJ CJ c=J c=J TRAF TRAF TSO TSO CLTI CLTI CCT2 CCT2 TCU2 TCU2 ARUI ARUI GETO GETO CJ CJ I I CJ CJ 1 NUMBER NUMBER CLTO CLTO TCUI TCUI CCTI CCTI CDC7 CDC7 ARUO ARUO c=JCJCJc=JCJCJCJCJCJ c=JCJCJc=JCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJCJc=:JCJCJCJCJCJCJ CJCJc=:JCJCJCJCJCJCJ 1 ~------~ ~------~ I I CONNECTOR CONNECTOR SCREENING SCREENING PATTERN PATTERN CONVERSION CONVERSION BLOCK BLOCK INWATS INWATS ROUTE ROUTE CODE CODE J J OR OR BU7 BU7 CCTO CCTO COC4 COC4 TCUO TCUO ART7\ ART7\ TRUNK TRUNK c~ c~ 1 1 1 1 1 TC ALTERNATE ALTERNATE I I 8U4 8U4 DIGIT DIGIT CONTROL CONTROL TCT2\ TCT2\ CCH7 CCH7 GSU7 ART4 ART4 COC2 COC2 CJ CJ CJ CJ CJ CJ ~------ BAND BAND DIGIT DIGIT TC TC 1 1 BU2 BU2 CDCI CDCI CCH4 CCH4 ART2 ART2 GSU4 GSU4 TCTI TCTI APPEARANCE APPEARANCE 8 8 c=J c=J CJ CJ CJ CJ I I AREA AREA OGT OGT IT IT CONT. CONT. BU BU ARTI ARTI TCTO TCTO CCH2 CCH2 COCO COCO GSU2 GSU2 OR OR c::=J c::=J [=:J [=:J CJ CJ 1 \ \ 1 1 START START CA6 RI7 RI7 8UO 8UO UCR UCR CCHI CCHI ARTO ARTO GSUI GSUI 1 I I CJ CJ c:::J c:::J CJ CJ NUMBER NUMBER ROUTING ROUTING GROUP GROUP \ \ BOX BOX BTl BTl CA5 CA5 AFA AFA AGR AGR CCHO CCHO GSUO GSUO CJ CJ CJ CJ CJ CJ 1 1 CAMA CAMA \ \ 1 1 INSTRUCTIONS INSTRUCTIONS BTO BTO CONTROL CONTROL CA4 CA4 SK6 AHA AHA RI2 RI2 RI4 CCUN CCUN GSTI GSTI c=J c=J CJ CJ CJ CJ I I PRETRANSLATION PRETRANSLATION TRANSLATOR TRANSLATOR I I CONTROL CONTROL CODE CODE HB HB AC AC SK3 SK3 ROUTING ROUTING RII RII CCTN CCTN GSTO GSTO c=J c=J I I CJ CJ INCA INCA 1 ·CJ ·CJ SPILL SPILL AREA AREA I I VAR VAR RIO RIO NSK NSK NAC NAC INO INO CCHN CCHN CJCJCJCJCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJCJCJ[=:JCJCJCJCJCJ CJCJCJ[=:JCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJCJCJCJCJCJCJCJCJ CJ CJ 1 DIVISION H, SECTION 13b(l) -, - -=--p; PHOTO TRANSISTORS 1 I NORMAL CARDS ~ DROPPED CARD Fig. 43-Effect of Dropped Card on Light Channels (4.152, 4.172) BARS UNOPEAATED Fig. 44-Card Support and Code Bars Normal (4.169) Fig. 45-Card Support and Code Bars Operated (Corresponding Card Drops) (4.169) Page 95 TO DECODER SIGNAL -----PHOTOTRANSISTORS 4.179) 4.175, TRANSLATOR (4.174, CARD THE BAR Translator OF CODE Card of ELEMENTS 32- FIG. 46-Eiements Fig. I I I :1 _j (c)l <~I SYSTEM --- LIGHT 400-v (e"l 13b(l) OF MODULATOR -c;:; 96 ______ - DETAIL I L I I I I I SECTION Page 97 (For 13b{1) STRIP AND STRIP Page Frame PANEL PANEL JACK, TI·CONTACT RELAYS SECTION FUSE MUL TERMINAL TERMINAL KEY. LAMP H, ~ (4.195) Connector / - - - r- 1-- r- I I I - - - - - LL ~r L.._ ~· L.._ L~ ~· ~~ ~· ~r ~· ~r LL L._ DIVISION f Capacity) Translator C2 Cl co 2'-or---..j C2 Cl co EMC /Ill I 18-Decoder 8 8 8 8 17 I 17 17 I I ~ ~ ~ ~ ~ 1---- 48-Emergency 1'-6" Fig. (For & STRIPS & PANEL PANEL Connector TOP RMINAL BOTTOM SE Frame ~~'glfiKS SISTANCES Y,JACK MP TOP BOTTOM ONNECTOR ONNECTOR ONNECTOA ONNECTOR c c FU LA NE ~ f- ~Tf ~ [cE -RE -KE I I Translator lf ~ - - r fLnJIII r LIL Elr [ L LIL CIL _E Jo Jolf 'E[[ Fir Connector a Foreign 2-2~ C2 Cl co Cl C2 co cz Cl co Translator (4.194) 9 9 9 9 • I I r- r- [ lr- ~ L ~ I to l _, 'l' Supplementary Frame) -Foreign T TOR- 47 MULTI· CONTAC RELAYS NUMBER CONNEC Fig. ETC KEYS STRIPS LAMPS RELAYS, TERM. JACKS, a RELAYS,ETC l - r r r r - - - - - - - - _ - - - - - -( I I / JKS TST CONT TEST I I I I UNIT JKS TEST BUSY CONTROL_ SHELF PANEL MB RELAY UNIT RCDR I I I I SELECTION MB MB JKS TST UNIT UNIT MISC UNIT OR UNIT CONT CONNECTOR UNIT RELAYS RELAYS RELEASE TBL FUSE MISC BUSY CONTROLLER REG KEY I I I I WRITING CONTROLLER TRANSLATOR TRANSLATOR SENDER a .f:. MB JKS EMG MAN. ALARM CONT I I MESS MISC TRNSL TRANS L ------~:! (5.11) l I ...... -===::" ------ n :::::::.._ - - - FRAME /NETWORKS I I - - - - - - ::= - - - - - - -- _ IE -- = -- Frame E I I -1 TST [' ~~ IE LPS TEST 11 J67443S-t I RELAY RELAY -~------5-4~ II Rf~f MISC J J 2 SHELF yl)t PANEL II -_- DR. DR. Recorder CONTROL 8 OR TST MKR MKR STRIPS MISC SLEEVE UNIT UNIT UNIT UNIT II RELAYS • FUSE REG PREFERENCE TEST TERM WRITING INDICATING CONNECTING fS~A~NIIrft ~l[lrlrl~~~ drldJ MARKER l MESS ~ [[~4YIY Trouble CONT RCDR I I I I If r-- ~ r-- ~ r-=-- 1-- 1-- 1-- 1-- r-- f--- r-- r-- r-- 1-- 1-- 49- '------TEST _·~======--- 1 - Fig. ---1 - - - - ---:::: AD ___/ "{] -( USE UNIT ~~ LPS LPS -7 IN J67443T-+ AND ALM ""'- TEST USE FRAME LC-11 'I!!!£.!Y TIMING RELAYS IN UNIT MOTOR a USE GATE BKR LPS UNIT 2_-_•o_-_-_-_-_-_-_-_-_-_~·_1~ UNIT OR UNIT MISC AND AMA AMA IN UNIT KS-13834 __ l:::::ll TEST PERFORATOR CKT PERF CONN REG START PREFERENCE MISC PERFORATOR INPUT USE LPS MESS /DC INDICATOR / IN 1) L ~ ~ ~ r- ~ 1-- r-- 13b( ~1:==~~~----_- ~---PERFORATOR { { { 98 ONLY ETS TEST ONLY ETS RELAYS MISC CONT Page SECTION DIVISION H, SECTION 13b(l) r--1 r-- f-41H.t. 0 5 10 l!:o 20 2!'> 2g 30 35 40 45 50 55 51 OfCOIIffl CRDSS (X·l MARICEJI Till£- OUT SOURC£0FRfC.I• _D_ ~~lM bsl sa S& C8 D M C TRI TR2 TRI TR2 Tl MSTICFR FIF RSR jm; CA REC IK CRK« CT OFFICE r--1 0 5 10 15 2g (- 45.08( l 20 25 30 35 40 45 50 55 51 r- T'n't: OF RECORD SOURCfOFR[C:h II . 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IHCOMtNG SWITCH LEVEL ':7,~~CHIAMM£2L ,.NC. I S3 IN:UTU7 I so ~~"T(\glLE."- S~CIN:UT U7 53 TO I 2 4 l 2 4 S7IMO I 2 4 M7 TK TRK OOKRK OTK OUK SK DCF SF Tl E 0 0 I 2 3 0 2 3 4 5 6 7 8 9 TOLL SWITCHING OECOOER CHANNEL INPUT OEC CHAN -SPC INPUT CHECK SYSTEMN0.4A 8 4M 52 CONTROLLER SPC INPUT JouT. "'·In c-IOUT~IMCcONM CONN.' PREF. COfiiTROL.tfc .JUNCTOR WAUUtriG 52 TURN CARDOVER lD 4D 50 6D NAC AC TMI TAS2TAS3NROR0plll) LCI UCR DMKAOK BOK CDK OOK EDKFDK ITRF ATBF TK TGK TLK SSK SLK FO CTT NCT EOEOEOEO CNOCNE TCB OC8 ICB 048 RTA RT8 RTC RTt COMMONCONTROL Sl OUTGOING FRAME GROUP OUTGOING $W1TCH SlOE WHENPUNCHED IN 0 I 2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 19 0 I 2 3 4 5 6 7 8 9 51 CROSS HATCHED so JUMCTOfll CONTitOL CHANN(l so 0 I 2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 19 LO I 2 J 4 5 6 7 I L9 BOX,FIRST AND JUNCTOR PATTERN CHANNEL. R8 0 I 2 3 4 5 6 7 8 9 10 II 12 13 l4 15 16 17 J,. RO I 2 3 4 5 6 7 I R9 R& LAST LINES fRAME IDENTWtCI..TION TRANSMtTT£0 MKft. TO SDR R7 TRUNKGROUP """" , al~r•• sua GRP , R7 RO I 2 3 4 5 6 R7 1SGA SGBSGO I 2 SG31 D IC oc FA FB FC FO FE FF FG FH IRst R;"JR~o'a~~ooc•M DC MF SXD LPO XD0 XSG SXR 20C COT SCFMA 'M I TRUNK GROUP TERMINATING AREA COD£ TRAFFIC SEPMATK>N TRANSMIT TEO MKR TO SOR R6 h cl· T ;··~SM>~~EIOTQKOITO ~DR~OOETi~nOos tON AO I CO <::7 TPC TSA B R6 2 4 A7 I BO I 2 4 871 I 2 4 c D E F TsGI NETUCR NRRT ACT I DLC NSK SK3 SK6 IHO I 1 2 4 u1l ClASS 6 [NO SENDER PROGRESS R5 MARKER::~~~T~T NDG I TO GVUP Tl uo I 2 4 U71 TO T1 f'rlb"~TA'""z 4 u1lro Tl UO I 2 4 U7 RGCOA2MRL SLI OP PS TVR liD AV FL RORRVT RCT OE 70 80 KPR PE MD UXS~LPOCl!2 ;~~~ :;~r;S ~5MB R5 MARKER REGtSntATtON. CLEBAYR[DI TIME RECD I DATE CONTftOt..LER GROUP CONTROU.£11 R4 !MARlER:fGI~riAIO" coD~ C.,V£Ts;rUO :';"~~~·.;assR4 F0F FMB FllO FST HLD COLC NSK Sll3 SK6tHN 1N UNJHO 1 I 2 4 U7 A 8 c D E F G H J K L wlo I 2 3 4 5 I 8°"j"our ~~eTa;'loP os l TIME CLRO. I DATE TRUNK GROU9 TRUNK L£V£L LX Fit TENS LK FR UfUTS R3 R3 Of" FtC£ JcKG CDR DAIIlA2 ~'i::'i'I>A~"W:E~~r:~~lMCS DRONCNECNO 0 I 2 3 4 5 6 7 8 , I o I 2 3 4 5 6 7 8 9 0 I 2 4 1 I o I 2 4 7 OE"COOERCHANNEl PROGRESS CLASS REPORT I TR.L. COO£ PREFERENCE SEC SW. LEY£L CONTitOLt..Eit C1tOSS YEAR R2 I SEC. sw. IT TC HLD TRCRSP CTR PCA PCB DOR ME MEARCK TKS ATB ATBSRL RLT NRFRES XCR MRF TMCITMC:! A B D E I Dl DU 0 I 2 3 4 AO AI BD 81 OO.Il G.ll P.ll S.ll H.ll ;;a R2 TICit(T NQ c MONTK COKTftOLLtA PAO$RtSS COftTR01..LER TEST R1 DEC CHAN" PR0G rc~~~ MARKER PROGRESS Rl ~ CHK CKGRCK TCK TBK GCK TIIS SC1 AT8 T8 SG OCKICK OFK IFK SK All 8K CK CHS A C HMG(}MT TT FR GR CLO W OT PC DTC OTC PA PB SA sa sc HO HM ET8 ETK lcLx A 8 c SR AR NF TR DAY TENS OAY UMtTS WOUR TEMS HOUR UNITS lllltiiUT"£$ TtWS a.NUT£S UlltTS RO CCT TR liRI C=R~;RS~~Rl RL lnACLB CLC ro:·t.::~":'Vl,..T~H·uc: US TSA 0 I 2 4 1 I o I 2 4 1 I a I 2 4 1 I o I 2 4 7 0 I 2 4 1 I o I 2 4 7 RO 1811 IIAO£ 1M U.S A ET OFFICE Fig. 50- Trouble Record Cards (Blank) (5.23) Page 99/100 S6 S6 R6 R6 RO RO R7 R7 R8 R8 Sl Sl S3 S3 55 55 R5 R5 57 57 so so 52 52 R4 R4 Rl Rl 54 54 R2 R2 R3 R3 58 58 I I (5.23) (5.23) 19 19 MS MS R9 R9 MS MS 9 9 39 39 59 59 13b(l) 13b(l) L9 L9 RTD RTD TM3 TM3 OSS OSS ~~ ~~ ~ ~ N2WF N2WF IKF IKF IliUM IliUM 101/102 101/102 8 8 8 8 4 4 7 8 8 18 18 38 38 TR TR RTC RTC SMB SMB MFI MFI AMA AMA TM2 TM2 PROGRESS PROGRESS UNITS UNITS TYPE TYPE oil oil UNITS UNITS REI REI WALKING WALKING 7 7 2 2 7 7 1 1 2 2 7 7 8 9 17 17 SCF SCF NF NF 37 37 MFI MFI TMI TMI RTB RTB SMG SMG ISDR ISDR FR. FR. Page Page TEST TEST TIME-OUT TIME-OUT SECTION SECTION I I I I 4 7 6 6 LEVEL LEVEL 6 6 B B TEST TEST 16 16 COT COT 36 36 MF MF AR AR (Punched) (Punched) SENDER SENDER RTA RTA TMC TMC LK. LK. XPS XPS MINUTES MINUTES INPUT INPUT H, H, 5 5 6 A A 5 5 JUNCTOR JUNCTOR SWITCH SWITCH 5 5 5 5 6 CROSS CROSS o o SDR. SDR. SR SR 15 15 55 55 OS OS TAS3 TAS3 35 35 20C 20C DR DR CHB CHB SWITCH SWITCH MSK MSK MARKER MARKER MARKER MARKER I I SWITCH SWITCH 'I 'I TO TO Card Card 4 4 5 6 7 8 9 do do 4 4 4 4 4 4 1 1 U7 U7 c c 14 14 HX HX 34 34 DP DP ICB ICB SXR SXR CHK CHK TOF TOF CHANNEL CHANNEL CHANNEL CHANNEL I I I I MKR. MKR. CONTROLLER CONTROLLER 5 5 4 4 3 3 3 3 4 4 B B 4 4 3 3 3 3 4 SX SX 13 13 33 33 XSG XSG OUTGOING OUTGOING NCF NCF OCB OCB TIF TIF DECODER DECODER INCOMING INCOMING TEN TEN CONTROL',, CONTROL',, TENS TENS DIVISION DIVISION INCOMING INCOMING CONTROLLER CONTROLLER 2 2 2 2 2 2 Record Record 2 2 3 A A 2 2 2 2 2 2 2 2 12 12 PX PX 32 32 XDD XDD MRL MRL TCB TCB CLI2 CLI2 CLT CLT FR. FR. PREF. PREF. I I I I I I I I I I I I I I I I II II CONNECTOR CONNECTOR GX GX 31 31 LK. LK. LPD LPD LPD LPD STR STR CNE CNE TBD TBD MINUTES MINUTES lcLx lcLx TIME-OUT TIME-OUT TRANSMITTED TRANSMITTED 2 2 3 4 0 0 0 0 0 0 0 0 0 0 10 10 50 50 30 30 RO RO LO LO uo uo :~ :~ SXD SXD J!NN. J!NN. TRL TRL MD MD CNO CNO ODX ODX M M Trouble Trouble NUMBERS NUMBERS NUMBERS NUMBERS CONVERSION CONVERSION I I 7 7 19 19 19 19 MF MF 9 9 0 0 81 81 19 19 29 29 HI HI TR TR JPN JPN II II FTD FTD UXS UXS CONN. CONN. DECODER DECODER 51- CONTROLLER CONTROLLER 4 4 LINE LINE 0 0 LINE LINE 8 8 E E 8 8 9 18 18 18 18 DC DC 18 18 28 28 10 10 BO BO SW. SW. INC. INC. TKS TKS WT WT MD MD UNITS UNITS 5 5 2 2 7 7 M M 17 17 2 2 17 17 Fig. Fig. 7 7 17 17 3 3 17 17 27 27 SEC. SEC. BAY BAY SDR.CODE SDR.CODE AI AI ~ ~ R R K PROGRESS PROGRESS oo:· oo:· PE PE J J E E TO TO I I 4 I I 6 6 2 2 16 16 16 16 16 16 26 26 HOUR HOUR TL TL lAo lAo ~~' ~~' FRAME FRAME KPR KPR (X-) (X-) SENDER SENDER MKR MKR 4 4 o o 5 5 5 5 6 I I 15 15 15 15 15 15 16 HM HM TO TO 25 25 45 45 LEVEL LEVEL SMO SMO I I 80 80 ~·~O~T. ~·~O~T. 3 3 2 2 3 4 4 4 1 1 H7 H7 0 0 14 14 14 14 15 14 14 24 24 NCOMlNG NCOMlNG 14 14 CROSS CROSS HO HO SMI SMI ROR ROR T: T: I I 70 70 ADVANCE ADVANCE CONTROLLER CONTROLLER TRUNK TRUNK 2 2 I I 4 4 3 3 13 13 13 13 3 3 4 0 0 13 13 0 0 13 13 sc sc SM SM OE OE MBR MBR FR. FR. FR. FR. LEVEL LEVEL TENS TENS MARKER MARKER I I TRANSMITT~D TRANSMITT~D 2 2 ROUTE ROUTE 2 2 4 2 2 0 0 E E 2 2 12 12 E E 12 12 OF OF 12 12 12 12 SB SB JS JS INC. INC. 22 22 23 RCT RCT OUT. OUT. DPD/IOS DPD/IOS SW. SW. I I I I 0 0 I I I I II II HOUR HOUR II II MKR. MKR. II II M M II II SA SA GROUP GROUP 21 21 RS3 RS3 GROUP GROUP RVT RVT OLS OLS SEC. SEC. L L 0 0 0 0 10 10 0 0 10 10 10 10 DU DU 10 10 PB PB HO HO 40 40 CL CL MS MS 20 20 MS MS ILS ILS RSI RSI ROR ROR CONTROL CONTROL PATTERN PATTERN FRAME FRAME FRAME FRAME 7 7 K K 7 7 TC TC TB TB 9 9 U9 U9 JP JP 9 9 PA PA 5DG 5DG FH FH RLT RLT FL FL loL loL (X-) (X-) J J I I 4 4 E E 8 8 8 8 8 8 9 FG FG AV AV OTC OTC 4DG 4DG PROGRESS PROGRESS JUNCTOR JUNCTOR DRL DRL JUNCTOR JUNCTOR NITS NITS INCOMING INCOMING OUTGOING OUTGOING 2 2 7 7 7 7 8 9 7 7 8 CROSS CROSS 0 0 1 1 KD KD UNITS UNITS ODG ODG FF FF DTC DTC TRL TRL SDR. SDR. 0 0 1 1 4 CAR, CAR, DAY DAY 6 6 I I 6 6 7 K K 6 6 7 8 9 PC PC TO TO CF CF FE FE SK6 SK6 TVR TVR TOT/KRT/MRE/NSOR/ TOT/KRT/MRE/NSOR/ GROUP GROUP 5 5 6 5 5 6 DECODER DECODER 5 5 6 CONTROLLER CONTROLLER o o 5 5 5 5 F F G H PS PS OT OT GROUP GROUP FD FD SK3 SK3 MS MS TRB TRB MKR. MKR. 35 35 TENS TENS I I ,, ,, c c 4 4 1 1 4 4 4 4 4 4 4 4 5 OP OP ST ST NSK NSK FC FC 6DT 6DT CLI CLI CARD CARD IDENTIFICATION IDENTIFICATION TRUNK TRUNK 4 4 D D E 3 3 3 3 3 3 3 3 SLI SLI DLC DLC TB TB PREFERENCE PREFERENCE CLO CLO FB FB CRK CRK CONTROLLER CONTROLLER I I 2 2 2 2 2 2 B B 2 2 TENS TENS 2 2 3 4 2 2 3 2 2 FRAME FRAME c c TC TC GR GR T2 T2 FA FA TRANSMITTED TRANSMITTED IK IK IPS IPS I I I I DAY DAY I I I I I I I I I I FR FR COL COL Tl Tl oc oc IS IS OA2MRL OA2MRL REC REC IOO/IOC/ IOO/IOC/ A A 0 0 0 0 0 0 A A B 0 0 0 0 0 0 TT TT TC TC uo uo ~ ~ CA CA ' ' RGC RGC 30 30 I' I' 4M 4M a a RECORDER RECORDER CARD CARD 4A 4A SWITCHING SWITCHING SYSTEM SYSTEM NO. NO. TOLL TOLL TROUBLE TROUBLE 103 103 13b(1) 13b(1) AND AND RELAYS RELAYS Page Page STRIPS STRIPS PANELS PANELS AND AND SHELF SHELF HOLE HOLE ETC ETC ETC ETC PANEL PANEL REGISTERS REGISTERS SECTION SECTION TERMINAL TERMINAL H, H, WRITING WRITING LAMP LAMP RELAYS, RELAYS, a a -PROTECTION -PROTECTION I--RELAYS. I--RELAYS. r-- jt--PIGEON jt--PIGEON .---TEST .---TEST ~MULTI-CONTACT ~MULTI-CONTACT ~JACK,KEY ~JACK,KEY 11 11 I I I I DIVISION DIVISION (5.37) (5.37) =~ \_~=::jtil)-l \_~=::jtil)-l ''\~:-=--=-=---=-:~:~~: ''\~:-=--=-=---=-:~:~~: 06 Frame Frame \._'\-\~~~~~~===::: \._'\-\~~~~~~===::: ------+---J67462A ------+---J67462A Test Test \ \ --- f f I I Register Register :!::::::=:::;;o~=J:: 10 ~====~~====;=====~ T T ~------~~11 ~------~~11 1 1 ~mbJJ and and 11111 -.JIIKRFF======t=r====ru -.JIIKRFF======t=r====ru ur==~ Sender Sender \===lttli!JfiT~::::::;;=====\== \===lttli!JfiT~::::::;;=====\== _.:: _.:: ll.l~~~~ ll.l~~~~ ...... / / ______ -7/ -7/ 52-Incoming 52-Incoming l l Fig. Fig. ______ -- T~------TJ T~------TJ IU-11 IU-11 ~~~======~= ~~~======~= 111 II,_L--u~======L__I~...--...&,UJ;=====::::;=====*IIJ II,_L--u~======L__I~...--...&,UJ;=====::::;=====*IIJ r r l l ( ( 'Ill----- 1111--- ______ -{'~*=r==u-~ror=="fll~~~ -{'~*=r==u-~ror=="fll~~~ --~~~~===~===1='~~~k!:~~=~====~~~L --~~~~===~===1='~~~k!:~~=~====~~~L AND AND UNIT--- ------1~ ------1~ -----1l ------·----~~--~~L ------·----~~--~~L SUPPLY SUPPLY STRIPS STRIPS SHELF SHELF ETC ETC HOLE HOLE ETC ETC SWITCHES-i SWITCHES-i PANEL PANEL lNG lNG VOLT VOLT RECEIVER RECEIVER 115 115 RELAYS, RELAYS, WRIT WRIT PIGEON PIGEON RELAYS, RELAYS, ROTARY ROTARY MF MF TERMINAL TERMINAL FUSE FUSE & & &. &. IILV IILV .. .. & & UNIT UNIT PANEL PANEL RELAY RELAY & & ASS!.MBLY ASS!.MBLY ASH ASH REGISTER REGISTER PUL&.ING PUL&.ING KLECTIONS KLECTIONS R£GISTEA$ R£GISTEA$ SHE.l.F SHE.l.F UNIT UNIT STRIPS STRIPS UNIT UNIT CONNE<:TOR CONNE<:TOR UNIT UNIT SEL.£GTtHG SEL.£GTtHG (5.46) (5.46) HOLU HOLU UNIT UNIT UNIT UNIT LAMP LAMP c.tt!':CK c.tt!':CK INDICATOR INDICATOR REGISTER REGISTER & & I I SENO£R SENO£R UNIT UNIT TELEGRAPH TELEGRAPH MOUNTING MOUNTING 0-C.IlP. 0-C.IlP. WRIT'MG WRIT'MG PIGEON PIGEON KEY KEY SENDER SENDER UNIT UNIT SELEC'IORS SELEC'IORS "USAGE "USAGE UNIT UNIT CtiECK CtiECK NUME.RIC.AL NUME.RIC.AL LE.AO LE.AO CALL CALL CLASS CLASS REVERTIVE REVERTIVE REVERTIVE REVERTIVE CONTROL CONTROL CHECKING CHECKING PC. PC. TEIIMINAL TEIIMINAL ~ ~ = = • • . . ] ] Frame Frame I-- J- - ~· ~· ~· ~· l--1 l--1 t------1 t------1 l)--; l)--; ~~ ~~ ~ ~ I I -· -· /' /' Test Test ~ ~ /1 /1 0 0 /' /' " " ...:..=.:, ...:..=.:, / / I I I I ~--~ ~--~ " " Sender Sender • • II II z-al.. z-al.. I I I I /' /' / / 53-0utgoing 53-0utgoing / / 0 0 ~/ ~/ [_~/ [_~/ v v :- 1-..? 1-..? Fig. Fig. PANEL PANEL FUSE FUSE 13b(l) 13b(l) 104 104 Page Page SECTION SECTION 105 105 13b(l) 13b(l) Page Page SECTION SECTION H, H, DIVISION DIVISION (5.47) (5.47) REGI!r>TER, REGI!r>TER, REGISTERS REGISTERS AND AND ETC. ETC. CONT CONT CASING CASING SENDER, SENDER, INC INC PANEL PANEL COVERS COVERS Frame Frame PANEL PANEL SUSPEN!rtiON SUSPEN!rtiON KEY KEY PANEL PANEL LK LK ~TRIPS ~TRIPS J67435C J67435C REAR REAR FRONT FRONT RELAYS, RELAYS, JACK, JACK, LAMP LAMP TROUBLE TROUBLE AND AND STUCK STUCK STUCK STUCK ALARM ALARM FUSE FUSE UNIT UNIT TERM TERM RE~I!rtTOR~ RE~I!rtTOR~ CAMA CAMA f-- ~ ~ }- } } I" I" I I 0---- I I .I .I I I J J ~ ~ Make-Busy Make-Busy q q d d l l " " VIEW VIEW "" "" -=- \ \ 2-0 2-0 ' ' ' ' ...._ ...._ 54-Sender 54-Sender \ \ FRONT FRONT \. \. I I ' ' ~ ~ \ \ fig. fig. )'' )'' ~~ ~~ I= I= I~ I~ U:: U:: ' ' i i OHices) OHices) 4M 4M in in ATCT ATCT or or 8 8 AND AND ETC. ETC. SHELF SHELF ETC. ETC. Offices Offices OR OR KEY KEY PANEL PANEL STRIPS STRIPS 4A 4A RELAYS, RELAYS, TROUBLE TROUBLE WRITING WRITING JACK, JACK, PIGEONHOLES PIGEONHOLES REGISTERS REGISTERS LAMP LAMP RELAYS, RELAYS, 674180 674180 TERM. TERM. 67418H 67418H in in J J J J io- i-- ~ ~ f-.- i--- ~ ~ I I I I (AOCT (AOCT I I ~ ~ CONNECTING CONNECTING II II II II FRAME FRAME Frame Frame 8 8 TOLL TOLL 2-al 2-al 1 1 TEST TEST Test Test ./ ./ II II lf lf OUTGOING OUTGOING / / TRUNK TRUNK I I I I Trunk Trunk I I E7 E7 ~ ~ l4 l4 ~ ~ AUTOMATIC AUTOMATIC '-- S, S, -- Connecting Connecting CASING CASING Toll Toll COVERS COVERS REAR REAR FRONT FRONT Outgoing Outgoing 13b(1) 13b(1) (5.53) (5.53) 106 106 55-Automatic 55-Automatic SECTION SECTION Fig. Fig. Page Page DIVISION H, SECTION 13b(1) I I n II , 'I T ERMINAL STRIPS ' ' ~ J ~T EST UNIT FOR 0 UTGOING TRUNKS ,-/" T0 CAMA POS. ~p ULSING UNIT I .-p ANEL CALL INDICATOR p ULSING UNIT ~R EVERTIVE PULSING UNIT .-a USY TEST UNIT ACK,KEY & >--VOLTMETER AND SUPERVISORY AMP PANEL T EST UNIT ~ I / fRONT CASINGS, I E XTENS!ON TEST REAR COVERS 'l ,., J ACKS & i OR OR s TORING JACKS "" f OR MAKE BUSY i ., '" p LUGS ~\ (f) !--J ACK ,KEY & LAMP HANDSET r PANEL I I ~fi=i=i=i===l T EST CIRCUIT J ACKS I 1000 !SOO OR OR FOR 1000 000 soo G JACK ULT I MATE BAYS I = === i-- -T EST & MAKE = = B USY I I 4,, JACKS ; I f- PIGEONHOLES & I I WRITING SHELf '" I TELEPHONE & r- MISCELLANEOUS UNIT rJ ACK,KEY & L AMP PANEL f----L OOP BATTERY & G.ROUND PULSING UNIT f- TEST TRUNK UNIT /i i-- TEST CONNECTOR UNIT 000 soo / f- ED-92266-11 I /""" r~J98501N-( l -- L-2-oj_j MANUAL OUTGOING TOLL OUTGOING TOLL CONNECTING CONNECTING TRUNK TEST fRAME TRUNK TEST AND MAKE BUI!>Y JACK BAY Fig. 56-Manual Outgoing Toll Connecting Trunk Test Frame (5.73) Page 107 SECTION 13b(l) r------AOTT------~ ~------AOOT ------...... FUSE PANEL TERMINAL ST RIPS -, I I I CONNECTOR CONTROL UNIT I CLASS RELAY UNIT I TEST CLASS UNIT TRANSMISSION LEVEL UNIT TEST CONTROL UNIT TRANSMISSION TEST TIMING AND UNIT ALARM UNIT 1 PROGRAM CONTROL DP CONTROL UNIT UNIT MF 8 DC-KP CONTROL UN IT ATMS DEVIATION REGISTER UNIT JACK,KEY AN 0 org LAMP PANEL § PIGEON HOLE AND WRITING SHELF TELEPHONE A NO MISC UNIT ~ ATMS DIRECTOR TELETYPEWR ITER UNIT CONTROL UNI T \ TONE DETEC TOR UNIT PROTECTION PANEL ~ J67418J I I I Fig. 57-Automatic Outgoing Toll Connecting Trunk Operational and Transmission Test Frames (AOOT and AOTT) (5.77) Page 108 1) 1) ( ( 109 109 Pages Pages 13b 13b Page Page 109 109 SECTION SECTION H, H, Q Q AND AND SHELF SHELF DIVISION DIVISION KEY KEY STRIPS STRIPS PANEL PANEL Test Test Test Test RELAYS,ETC, RELAYS,ETC, JACK, JACK, LAMP LAMP WRITING WRITING PIGEONHOLES PIGEONHOLES TROUBLE TROUBLE RELAYS,ETC. RELAYS,ETC. REGISTERS REGISTERS TERM. TERM. 67447A 67447A Trunk Trunk f-- ~ ~ ~J ~J ,....__ ,....__ f-- ~ ~ FRAME FRAME I I J J TEST TEST Transmission Transmission I I J J lntertoll lntertoll Jl Jl (5.104) (5.104) TRUNK TRUNK 8 8 II II 2-e! 2-e! Associated Associated Frame Frame Outgoing Outgoing / / II II INTERTOLL INTERTOLL /' /' / / I I I I and and Control Control ;7 ;7 I I I I ~ ~ ~ ~ ~ ~ Frame Frame and and '--- AUTOMATIC AUTOMATIC -- s, s, 58-Automatic 58-Automatic CASING CASING COVERS COVERS Fig. Fig. REAR REAR FRONT FRONT