as

was

In

a

of

the

make

for

heavy

the

provide

when

which

was

to

call

offices,

1nter­ party This

the to

the

to

11

party

well

through

complex

at

directly chore

the

"toll"

the

and

solution

used

that

length the

as a determine

had

tching

to

establishment deposited

varied

provided

called to

made so

dial

with

s·wi

called

the

"ticket

wanted activity

phase,

operator's the

distance

call

to record

be

proper

another

extended switching

also

connected the

established.

cases

coins

and

the

in

functions.

to

toll

operator required

distance

the

long

of supervision

problems

was

SYSTEMS

but

the

person

a

was

information,

talking

only

subsequently

customer

call number,

a

available

the

busy"

operator

for

until

this long

of

distance

On

either

customer

properly

these

the

is not

path

was

switchboard

installed,

party

of operator

deposit

feature

and

13

location

supply

long

of

bill,

POSITION

remain

calling

calling

the

line

connections

could

distance

to

electromech·anical

13.1 Whenever

were

which

the to

this

coin

during

called talking

appeared

necessary the

the

electromechanical

each

made,

of operator

telephone

she

was

operator.

"the

supervision long of nature

or

and

Considerable

CHAPTER

switchboards

had and

hand a

of

on

SERVICE the

the

it

proper effort.

"person-to-person"

Later

sw1tchboard

with

at

the

The

customer's

out

a

for

establishment

each

the

and

advent

of

a

etc.

number,

telephones

simple

w1th

problems

manually

functions.

call,

as

advent

for

of

TRAFFIC

the

operator

c:harging

be

However,

terminated,

"assistance"

always

call any l1st

switchboard

filled

switchboard

cause from

subsequent

coin connections the charge,

call,

call~

such

a

called to.

THE the

If

other

determination

possible

the

to the

the

considerable

was problems.

was

customer

final

the

conversation

of

subscriber.

(automatic)

the

of

Before

call distance

the

When

With

had

the

to

calls.

INTRODUCTION

of

necessary

required the call

initial

the

tabulation

various

of

operator

these

the

became

long

13.1

the calling a the function answered addition, it charges. offices,

the the the

operator time any thus required and of end extensively

another situations added local of charge

number

record

direct

vention

where

was

1 1

£1c £1c

1n 1n

to to

con­

that that

No. No. Slstem Slstem

the the

in­

offices offices

the the

than than

dial­

"0" "0"

of of

Tra Tra toll toll

with with

in in

and and

faster faster

operator operator

soon soon

sub­

number number

the the

display display

operators, operators,

of of

would would

somewhat somewhat

an1ca an1ca

designed; designed;

information information

Traffic Traffic

It It

operator operator

dial dial

however, however,

each each

of of

customer customer

and and

sloping sloping

Tandem Tandem

the the assistance. assistance.

card card

electromechani­

rather rather

further. further.

number number

Position Position

human human

was was

special special

keyshelf, keyshelf,

in in

lOOA lOOA

a a

specifically specifically

universal, universal,

(positions) (positions)

sloping sloping

traffic traffic

instead instead

sense sense

different different

1 1

conversing conversing

telephone telephone

simply simply

although although

system system

the the

extend extend

better better

of of

ectromec ectromec to to

still still

SYSTEMS SYSTEMS

credit credit

"human" "human" calls calls

switchboard switchboard

obtaining obtaining

identical identical

Crossbar Crossbar

slightly slightly

e e

to to

devices. devices.

to to

Service Service

NO. NO.

on on

the the

quite quite

and and

much much

a a

of of

th1s th1s

development development

included included

associated associated

give give

By By

SYSTEM SYSTEM

assistance assistance

increase increase

sharply sharply

two two

was was

general general

of of

consoles consoles

number number

with with

considerable considerable

burden burden

In In

to to

other other

console, console,

a a

and and

telephone telephone

Position. Position.

very very

the the

means means

a a

of of

switchboard switchboard

connected, connected,

a a

POSITION POSITION

collect, collect,

SYSTEM SYSTEM

This This

1c 1c

became became

Traffic Traffic

or or

connection connection

the the

of of

more more

is is

"lOOB," "lOOB,"

the the

assistance assistance

w w

automatic automatic

be be

a a

able able lamps. lamps.

into into

"buttons" "buttons"

increase increase

a a was was

number number

13.2 13.2

(and (and

space space

required required

POSITION POSITION

constant constant

prerogative prerogative

on on

of of on on

to to

his his

successful successful

direct direct

cordless cordless

In In

Service Service

party party

was was

operation operation

the the

SERVICE SERVICE

(DDD). (DDD).

a a

the the

growth growth

any any

The The

designed. designed.

POSITION POSITION

telephone telephone

the the

Section Section

consisting consisting

system system

System, System,

lamps lamps

system system

display display

various various

for for

telephones telephones

these these

extended extended

influx influx

the the

writing writing

SERVICE SERVICE

subscribers, subscribers,

wished wished

designated designated

of of

was was

number. number.

equipment equipment

enabled enabled

incremented incremented

state state

with with

called called

Traffic Traffic

the the

ten ten

of of

each each

Th1s Th1s dependent dependent

he he

TRAFFIC TRAFFIC

is is

1) 1)

this this

dialing dialing

Operator Operator

propo.rtional propo.rtional

dial dial

"lOOA" "lOOA"

SERVICE SERVICE

provided provided

that that

-

retained retained

directly. directly.

"O" "O"

and and special special

him him

needed. needed.

the the

person-to-person, person-to-person,

which which

heavy heavy

third third

various various

lOOA lOOA

a a

result result

No. No.

Each Each

designed designed

TRAFFIC TRAFFIC

of of

13 13

the the

a a Switching Switching

as as

over over

primary primary

which which

a a

by by

Also, Also,

the the

telephone telephone

were were

horizontal horizontal

the the

still still

to to

Section Section

to to

Service Service

Sections Sections

telephones telephones

an an

to to

was was

number number

CH. CH.

As As

distance distance

TRAFFIC TRAFFIC

a a

lOOA lOOA

The The

evident evident

Although Although

of of

(TSPS (TSPS

such such

containing containing

completely completely

provided provided

keyshelf keyshelf

result, result,

was was

Operator) Operator)

1 1

customer, customer,

equipment) equipment)

manipulating manipulating

introduced. introduced.

the the

dialing dialing

THE THE

a a

coin coin THE THE

similar similar

Service Service

Electronic Electronic No. No.

charges charges

calls calls

trol trol the the

direct direct

B. B.

service. service.

Traffic Traffic

and and

cal cal

cluded cluded

displayed displayed

this this

only. only.

(for (for

panel panel

Service Service

require require

the the positions. positions. nature) nature)

alleviate alleviate

ing ing

customer customer

was was

became became

growth growth

being being

A. A.

scriber scriber of of

operators operators

As As which which CH. 13 - TRAFFIC SERVICE POSITION SYSTEMS

an electronic switching system "computer" is now used instead of the electromechanical equipment to a1d the Traffic Service Operator. The new system also differs from the lOOA system in that it is a common system with a stored lrogram control and operates with one or two toll centers. nstead of be1ng limited to operation with Crossbar Tandem offices, the system works with offices equipped with No. 4 ·crossbar, No. 5 Crossbar, Tandem, Panel, Step-by-Step Intertoll and No. 1 ESS equipment. 13.2 GENERALDESCRIPTION OF THE TSPS SYSTEM NO. 1 Figure 13-1 illustrates the basic TraffiG Service Position System (TSPS No. 1) interconnections. As the figure indicates, the system is located (electrically) between a number of local offices, where calls requiring operator action or assistance are originated, and a maximum of two toll switch­ ing offices through which the Traffic Service Operator may route the call to the direct distance dialing (DDD) network for connection to the called number. The system is subdivided into the Trunk circuits, the Base Unit and the lOOB Positions. Each Trunk c1rcu1t 1s lo­ cated 1n the transm1ss1on path (the trunk line) extending from a local office to a toll switching office. The Base Unit con­ sists of Switching Networks (the Trunk Link (TL) and the Position Link (PL) frames) and the Stored Program Control No. lA (SPC No. lA) "electronic computer" equipment. The lOOB positions may be located locally (in the same location as the Base Unit) or remotely up to a distance of about 50 miles using T-1 Carrier equipment. The normal location of the entire TSPS No. 1 System (except the remote positions) is at a toll switch­ ing office.

13.3 THE TRUNK CIRCUITS There are several types of TSPS No. 1 trunk circuits, all of which can be used for either coin or noncoin traff1c. Most are plug-in type trunk units (two circuits per unit) which are mounted on either 2-wire or 4-wire Universal Trunk frames similar to the Universal Trunk frames used in No. 1 ESS. TSPS No. 1 has no trunk switching or trunk concentra­ ting capability. In other words, it does not connect the calling number to the desired called number. Each trunk circuit is permanently connected on one side to a trunk line

13.3 r------TOLL CONNECTING TRUNK LINES ------, I I I TSPS NO. 1 SYSTEM I I I I fTs'Ps "No-:-1-;: RliN'K Ci R"CUiTsl I I I g I I I . I I I TRUNK i TOLL TO ~ .... t, ~ SWITCHING DOD IJ.;I ANY ONE OFFICE NETWORK OF A I I I I NUMBER OF I ~ LOCAL I TRUNK I OFFICES ~ ! I l TOLL TO ~ SWITCHING DOD '"t:1 I I OFFICE NETWORK '"t:1 I I ~ L __ ':'.: __ ..J ("') ~ r---- Cfl (:11 r--- ~ 1---- ~ ~---, ~ I I ~ IJ.;I ~ . I SWITCHING I ("') .,J:a. NETWORK ! tr:l I (LINKS) ! ., 0 l I I Cfl I I ~ ~ I STORED PROGRAM I lOOB ~ I CONTROL NO. lA I 0 I (SPC NO. lA) I z LOCAL ~REMOTE Cfl 1M( I (CONTROL) I PSPS TSPS Cfl POSITIONS POSITIONS ~ I TSPS NO. '1 I trJ 3: ~~E~N~-----J Cfl

Figure 13-1 The Basic TSPS No. 1 Interconnections

a a

lA lA

a a

into into

are are

of of

to to

(on (on

TSPS TSPS

and and

every every

rod, rod,

line line

is is

lOOB, lOOB,

by by

to to

the the

to to

detected, detected,

TSPS TSPS

No. No.

toll toll

a a

other other

Trunk Trunk

the the

pair pair

a a

principles. principles.

Switching Switching

is is

a a

periodically periodically

to to

effectively effectively

party. party.

switching switching

times times

SPC SPC

trunk trunk

winding winding

able able

at at

1 1

the the

to to

operator operator

Ferrod Ferrod

telephone telephone

each each

provided provided

haseen haseen

guided guided

assembled assembled

ferrite ferrite

By By

through" through"

be be

are are

between between

"transtarent" "transtarent"

On On

the the call call

appropriate appropriate

the the

terminated terminated

of of

toll toll

No. No.

as as

many many

single-turn single-turn

wound wound

The The

are are

connected connected

the the

are are

TSPS TSPS

called called

call call

by by Universal Universal

a a

"cut "cut

the the

new new

is is

are are

must must

a a

is is

have have

SYSTEMS SYSTEMS

Network Network

of of

pulses, pulses,

connected connected

TSPS TSPS

a a

"readout" "readout"

the the

is is

by by

to to

(again (again

each each

chapter. chapter.

originating originating

office. office.

(which (which

the the Positions Positions

when when

(MF) (MF)

l1nes l1nes

electromagnetic electromagnetic

which which

and and

features features

When When

associated associated

requiring requiring

for for

ESS ESS

center center

office) office)

transmission transmission

in in

circuit circuit

call call

perf~rmed perf~rmed

addition, addition,

connected. connected.

representing representing

on on

transmission transmission

and and

becomes becomes

POSITION POSITION

guided guided

1 1

that that

circuit circuit

local local

Switching Switching

the the

(interrogates) (interrogates)

is is

the the

In In

trun trun

office) office)

designed designed

the the

as as

Ferrods Ferrods

around around

that that

so so

13.5 13.5

calls calls

(the (the

single-turn single-turn

No. No.

pulses. pulses.

Unit Unit

trunk trunk

of of

the the

in in

wires wires

operator operator

proper proper

memory. memory.

a a

in in

the the

trunk trunk

are are

Network Network

"points" "points"

rod rod

circuit circuit

SERVICE SERVICE

position. position.

actually actually

scans scans

the the

new new

of of

one one

lA lA

these these

Ferrod Ferrod

operating operating

transmission transmission

and and

Base Base

each each

specific specific

routes routes

and and

the the

TSPS TSPS

Ferrods Ferrods

is is

in in

of of

a a

holes holes

multifrequenck multifrequenck

to to

Link Link

a a

of of

switching switching

wh1ch wh1ch

through through

TSPS TSPS

No. No.

pair pair

windings. windings.

trunk trunk

which which

the the

of of

two two

ferrite ferrite

in in

circuits circuits

outpulsing outpulsing

circuits circuits

TRAFFIC TRAFFIC

scanning scanning

device device

from from

these these

SPC SPC

a a

toll toll

the the

special special

-

Trunk Trunk

lOOB lOOB

winding winding each each

Network, Network,

status status

office, office,

multifrequency multifrequency all all

stability stability

characteristics characteristics

a a

addition, addition,

a a

equipment equipment 512 512

of of

of of

13 13

the the

detection detection memory) memory)

existance existance

explained explained

control control

trunk trunk

the the

trunk trunk

processed, processed,

connected connected

detected. detected.

office office

In In

on on

When When

at at

through through

of of the the

consists consists

wires) wires)

in in in in

equipment equipment

sensing sensing

to to

customer, customer,

is is

CH. CH.

is is each each

the the

The The

local local

these these

Across Across

trunk trunk

Since Since

The The

a a

position, position,

it it

two two

control control

off. off.

Switching Switching

further further

consists consists

matrix matrix

the the

operator operator

second second

control control

Program Program

frame) frame)

action action Program Program

a a

scanning scanning

as as threaded threaded

It It

current current

"interrogate" "interrogate" solenoidal solenoidal

from from

associated associated

accept accept

switching switching

the the

numbers numbers calling calling

position position

(the (the

transmission transmission cut cut ensure ensure

completely completely terminals terminals

TSPS TSPS

side side

offices. offices. Network. Network. CH. 13 - TRAFFIC SERVICE POSITION SYSTEMS

13.4 THE "BASE UNIT" The functions of the Base Unit are to detect a request for Traffic Service Positions operator action, to route the call to an operator, and to enable the operator to properly supply the required and requested services by effecting various interconnections on the basis of the "Proframs" and data stored in the SPC No. 1 memory (the Store • Figure 13-2 is a Block Diagram in which the components of the Base Unit are shown. The major sections of the Base Unit are the Switching Network (shown as TSBO, TL and PL), the SPC No. lA equ1pment (outlined with dotted frames), and the assoc1ated per1pheral eg.uipment such as the Miscellaneous Trunk frame, Se.rv1ce Observ1ng frame, Position Grouping Gate frame, etc. The Universal·Trunk frames, although always lo­ cated with the Base Unit, are not considered as part of the Base Unit.

13.5 THE SWITCHING NETWORK The basic TSPS No. 1 Switching Network consists of a Trunk Line Network (TLN) on wh1ch up to 256 trunk circuits may be term1nated and a Position Link Network PLN) to which up to 80 lOOB TSPS ~osit1onsan erv1ce c1rcu1ts may be connected. When ad 1t1onal trunk capac1ty 1s requ1red, a maximum of three Trunk Switching Buildout (TSBO) frames may , be installed, each prov1d1ng for an add1t1onal 256 trunk circuits. If required, additional Trunk Link Networks and Position Link Networks may be added to further increase the capacity. Thus, the TSPS No. 1 Switching Network design allows for orderly growth of TSPS office sizes. The design also allows for a number of flexible arrangements for a variety of traffic conditions. The basic switching device in the Switching Network (in the TP, PL and TSBO frames) is the Ferreed. The Ferreed consists of two miniature glass-enclosed reed switches which are opened or closed by the magnetic action of the surrounding material. These are arranged into square arrays of 64 Ferreeds each (8 columns and 8 rows) for 8 input pairs of wires and 8 output pairs of wires. The arrays, called "crosspoint Ferreed switch assemblies," (which are the same as the ones used in the No. 1 ESS equipment) are described in the No. 1 ESS

13.6 aASI um ·""""""'" ------F~c,.u_r;:>=t---~~TsBolrR~~ t.~~. """""''"en.> !PLI i I~~~ p( :s I ..-+------+-i~ .----...,.,=,.,...---1-__,r _-J:::± ~ ~-:_ t:::::::L.r n ,--t+-;~+-r.:t---, :c ..... ~

~.o.... I LJ .-3 =~u·:gEMENT ~ ~ ... - . 'T2 'T2 ~ l' .g ::::~:: TAK ]~ TL 1-4 in ~ rn ~ ;: ~ GRID 4 n ::; ~ NETWORK • ..~ ! ~ --~ C/) ~ tr.l ~ ~ ..z I ~ ~ 1-4 t: ~ ! 4W UNIV TRK FR MASTER CONTROl. CENTER (MCC) C"'l • ~ (UTI tr.l REMOTE ~ 15 - ~ CONrRoL -PROGRAM- Tele:TY~ 1 SEf:tV ICE -~·~~=- LOCATION AUTOMATIC CONTROL OIS~L.AY fAPE' WRITER I OBSERVING MESSAG£ OISPLA'I' FRAME 1 FR "'CJ " ACCOUNTING 6 TEST 1 (SO) (AMA) (COT) (CD • PT • TTY) • 0 f --- -r _.J C/) STORED PROGRAM CONT L__ .. I"M 1-4 COMM BUS =~1~-~~="f•.,., (SPC) RAN!!LATOR MISC POSITION POSITION .-3 ,------, .... --- ~, so 1 1 FA BUFFER SCAN AND I : PAO~~sSo~ - Srf:E : CENTRAL 1 MASTER I GATE 1-4 F'R SIGNAL. I I I PULSE I l ~~~~ARL I SCANNER I CONT (M) I DtSTR I I FR I I :;~ I (PB) 1 0 t F~ • ~:• I : I FR I I I '--- I I I I z 1 !Psaso: 1 (P) 1 ($) ' : (CPO): ' (SO) ' : (MS) : Tl L.- I- _j l--r""L:::!::..:r---..1 "--1·-· '-··r··· (I~ CARRIER en I --rt-mJ "(DIC) I CAAr,:IERIUUI to( TL I , '"" , I I C/) OR .-3 •• 1 ~ POSITION . I tr.l Gf\OUP _c::r 1=1 II '-1~. POWER ---r GATE OISTRI8UTIIIIG FR f--t-----++1+-- ~ .. REPJiTEA :! (PGGI -l (POl __ _j I ' j

l --tfJ[JT -- TSPS NO. I FRAMES SPC lA FRAMES '----- LJ - --- TAAN$M ISSION FRAMES lJ LJ

Figure 13-2 TSPS No. 1 Equipment Block Diagram

to to

the the

turn turn

if if

a a

every every

are are

con­

in in

also also

pro­

line line

con­

re­

.for .for

called called

was was

in in

memory, memory,

the the

as as

of of

directed) directed)

Service Service

action action

"read" "read"

method method

with with

and and

only only

can can

the the

by by

switching switching etc. etc.

output output

contains contains

activities. activities.

same same

be be

introduced introduced

for for

(as (as

trunk trunk the the

as as

installation installation

also also

temporarily temporarily

which which

equipment equipment

and and

electronic electronic

Electronic Electronic

a a

switches switches

than than

be be

System, System,

in in

of of

Twistor Twistor

Switching Switching

instructions instructions

the the

to to

can can

provides provides

turn turn

other other

control, control,

1 1

action action

the the

an an

pad" pad"

but but

program program

information information

temporarily. temporarily.

application application

operation operation

The The

data data

monitors monitors

of of

by by

can can

in in

lA) lA)

of of

the the that that

any any

control control

particular particular

Crossbar, Crossbar,

No. No.

else else

accordance accordance equipment. equipment.

resulting resulting

as as

or or

it it

on on

SYSTEMS SYSTEMS

control control

which which

rather rather

the the

to to in in

Thus, Thus,

4M 4M

NO. NO.

store store

in in lA lA

commands, commands,

the the all all

certain certain

the the

the the

system, system, which which

a a

or or Piggyback Piggyback

the the (referred (referred

repeatedly, repeatedly,

"scratch "scratch

method method

frame. frame.

or or

of of

equipment equipment

service service

suitable suitable

basically basically and and

of of

1 1

in in

No. No.

(PBT) (PBT)

sequence sequence

"store") "store")

1nformation 1nformation

flexibility. flexibility.

a a

(SPC (SPC

switches switches

place place

by by

the the

anywhere anywhere

is is

4A 4A

POSITION POSITION

of of

and and as as

lA lA

No. No.

This This

controls controls SPC SPC

operating operating (contained (contained

require require

the the

memory memory

used used

in in

or or Trunk Trunk

Th1s Th1s memory memory

changes. changes.

basic basic

permanently permanently

13.8 13.8

employs employs

take take

instruction instruction

orders orders

center center

time time

a a

these these

therefore, therefore,

position position

transmits transmits

by by

certain certain

No. No.

the the

logical logical a a

equipment equipment

Twistor Twistor

modifications modifications

TSPS TSPS

one one

to to

as as

into into

the the

the the

operation operation

of of

the the

a a

degree degree

serves serves

ESS). ESS).

by by

SERVICE SERVICE

at at

moment moment

stored stored TSPS TSPS

then then

in in of of

equipment equipment either either

Crossbar, Crossbar,

the the

the the

1 1

system system

is is

cause cause

of of

Programs Programs

the the

a a

program program

hardware hardware

5 5

1 1

indirectly indirectly

EQUIPMENT EQUIPMENT

It It

positions positions

one one

lA lA

also also

maintenance maintenance

Control Control

to to

action action

means means

that that

large large control control

program program

for for

to to

data data

Processor Processor

equipment equipment

The The

unit unit

data data

containing containing

(No. (No.

lA lA

or or

will will

Piggyback Piggyback

a a

No. No.

No. No.

system. system.

Miscellaneous Miscellaneous by by

equipment equipment

each each

TRAFFIC TRAFFIC

at at

informat1on. informat1on. "writing" "writing"

No. No.

TSPS TSPS

changes changes

and and

-

The The

any any making making

as as

only only

controlled controlled

is is

NO. NO.

consists consists

the the

of of

memory memory

system system

the the

the the

(by (by

proper proper

Processor Processor

decoded decoded

basic basic

have have

SPC SPC

improving improving

Program Program

similar similar

TSPS TSPS

the the

13 13

memory. memory.

through through

by by and and

of of

System System

It It

is is

not not

in in

in in and and

SPC SPC

place. place.

to to

computer computer

The The

such such

connected connected

directly directly

the the

in in

The The

associated associated

The The

or or

for for

The The

The The

CH. CH.

executes executes

peripheral peripheral

when when

equipment. equipment.

Processor) Processor)

THE THE

system. system.

peripheral peripheral

conditions conditions

memory) memory)

storage storage

Stored Stored

it it

take take

changed changed

the the

able able

control control

circuit circuit

instructions instructions

either either

the the

the the

stored stored trols trols

causes causes

(the (the Networks, Networks,

the the to to

trol trol

the the

As As

by by the the

be be

is is

which which

"store") "store")

recording recording

grams. grams. primarily primarily

wiring wiring

Additions Additions

digital digital

systems systems

device device

the the

procedural, procedural,

designed designed

of of

Switching Switching

13.6 13.6

circuits circuits

selected selected chapter. chapter. becomes becomes CH. 13 - TRAFFIC SERVICE POSITION SYSTEMS

Two identical Processor frames are used for con­ tinuous parallel operation from duplicated Stores (memory). Both Processors perform the same routines simultaneouslr but only one. (either one) is always actively in control. Hlgh­ speed matching of the information in each of the two Processors provides the major means for the automatic de­ tection of any equipment troubles. In addition to the Piggyback Twister Store and the Processor, the SPC No. lA equipment includes the Master Scanner frames which provide input data to the Processor, and the Signal Distributor frames through which the processor activates assoc1ated per1pheral equipment and other frames shown on Figure 13-2. Most of these frames are the same as the ones used in the No. 1 ESS equipment. A Control and Display frame and at least one teletypewriter unit are also included for control of the SPC No. lA equipment by the main­ tenance personnel. The Pro¥ram Tape Unit (which is not in­ cluded in the No. 1 ESS equ1pment) has the function of en­ abling the transfer of information (the programs, etc.) from magnetic tape into Piggyback Twister Stores whenever this is required. The Programs are originally written by Programmers and then compiled and assembled into the required "machine" language programs with the use of commercial computers, such as for example the IB~17094 computer. The Compiler-Assembly process on this computer causes the resulting programs to be stored on an output magnetic tape. It is this tape that is mounted on the Program Tape Unit to transfer the Programs into the TSPS No. 1 memory.

13.7 THE lOOB TSPS POSITION The lOOB Traffic Service Position Section, illustrated in Figure 13-3, is a two-position cordless console made pri­ marily of sheet steel. It has a horizontal writing space which extends the full width of the position, a lightly slop­ ing control keyshelf and a sharply sloping display panel, and is similar to the lOOA TSPS position. In the center of the display panel is an enclosure containing 12 display lamps. These lamps are used to indicate the originating (calling) telephone number, the termination (called party) telephone number, the charging rate for the call, the elapsed number of minutes, the time of the day, a special billing number, a hotel serial number or any other data which is obtainable from the Base Unit.

13.9

SYSTEMS SYSTEMS

POSITION POSITION

13.10 13.10

SERVICE SERVICE

TRAFFIC TRAFFIC

-

13 13 CH. CH. ~or

cir­

on

away

are

these then

that for

and

(at

and Base

Posi­

voice

single­

a

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all

posi­

of

the

1

depends

obtain

made)

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can

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which

with

cards

toll

the

is shown

operator.

at

of

miles

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of

positions

ticket

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basis

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Three

are

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are

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multileaf

lamps

for

to circuitry)

as

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readily

a

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four-compartment to·

toll

of considered

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priority TSPS

position.

operator

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boxes

unit

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to

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a

a

operator

positions

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composed

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from

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POSITION

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placing

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to

equipped to

TSPS.

remote)

by are

facilities

used.

these

while

essentially

of on

available

miles

completed

and

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administrative

up

priority.

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the ticket

of hold

4

keys

and 13.11

be

unit,

as

"loops"

"hold"

display

one

operator

perform

state

An

However,

SERVICE

and

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and

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the

TRAFFIC

is associated

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considered

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distance

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-

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holds

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the

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in

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progress.

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Figure 13-4 Traffic Service Position System No. 1 Keyshe1£

The The

a a

a a

call call

is is

the the

The The

to to

a a

on on

to to

number number

in in

fre­

at at

of of

or or

from from

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of of

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at at

the the

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between between

digits digits

positions. positions.

this this

path path

being being

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designated designated key key

the the

immediately immediately

the the

or or

call call

trunk trunk

a a

the the

Service Service

call call

ten ten

(with (with

of of

none none

as as

state state

switching switching

programs programs

dialed dialed

path path trunk trunk

executing executing

memory. memory.

memory. memory.

by by

route route

enable enable

line line

other other

programs programs

the the Scanner. Scanner.

begins begins

of of

a a

that that

or or

Programs Programs

position position

transmitter transmitter

switching switching

in in

in in

the the

information information

call, call,

to to

that that

The The

toll toll

originates originates

dialed dialed

locally locally

and and

TSPS TSPS

Release) Release)

and and

the the

dialed dialed

type type

a a

SYSTEMS SYSTEMS

Traffic Traffic

her her

with with

process process

so so

these these

trunk trunk

multifrequency) multifrequency)

various various

program program

Trunk Trunk

toll toll

function function

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seven seven

the the

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by by

forward forward

establishes establishes

number number

sequence sequence

of of

of of

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office office

digit digit

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comparing comparing

accomplished accomplished

plus plus

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distance) distance)

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rapidly rapidly

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simultaneously simultaneously

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appropriate appropriate

POSITION POSITION

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is is

guided guided

by by

particular particular

associated associated

entire entire

she she

which which

from from

dialed dialed

the the

quickly quickly

key key

may may

out out

thereafter), thereafter),

as as

RLS RLS

the the

Operator) Operator)

encounters encounters

(for (for

13.13 13.13

(long (long

the the execution execution

execution execution

routed routed

circuit, circuit,

switching switching

person-to-person person-to-person

the the

telephone telephone

dial dial call call

state state

by by

while while

processing processing

by by

a a

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Operator Operator

detected detected

each each

receiver. receiver.

is is calls calls

SEQUENCE SEQUENCE

POS POS

SERVICE SERVICE

(for (for

Switching Switching

the the

multifrequency multifrequency

the the as as

is is

call call

new new

toll toll

with with

lost. lost.

a a

for for

all all

pulsed pulsed

it it the the

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trunk trunk

detection detection

call call

operator operator

process, process,

store store

then then

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operator operator

passing passing

the the

connection. connection.

equipment equipment

manner, manner,

it it

1 1

1 1

"0" "0"

operator operator

the the

deduced deduced

the the

other other

the the

party's party's

and and

to to

are are

digits digits

is is

all all

equipment, equipment,

previous previous

The The

(''0" (''0"

immediately immediately

causes causes

if if

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must must

during during

Processor Processor

elsewhere elsewhere

TRAFFIC TRAFFIC

is is

if if

etc., etc.,

No. No.

the the

No. No.

this this

recognize recognize

1 1

received received

for for

-

of of

after after

its its

or or

PROCESSING PROCESSING

dial dial

call call

or or

through through

to to

similar similar

Switching Switching

control control

call call

be be

called called

13 13

causes causes

pressing pressing

(associated (associated

digits digits

a a

call call

No. No.

TSPS TSPS

TSPS TSPS

completely completely

a a circuit circuit

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control control

pulsed pulsed

switchboard switchboard

is is

course, course,

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CALL CALL

The The

with with

System. System.

switchboard switchboard

by by

automatically automatically

to to

the the

the the

1 1

example, example,

equipment equipment

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recognizes recognizes

CH. CH.

In In

through through

type type

or or

SPC SPC

will will

The The

This This

Whenever Whenever

of of

programs programs

exchange. exchange.

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cord cord

station, station,

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THE THE

switchboard switchboard

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dialed dialed

for for

Ferrod Ferrod

No. No.

call call cord cord

keyshelf. keyshelf.

cannot cannot

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the the

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the the

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circuit) circuit)

local local

pulses, pulses,

thereafter,) thereafter,)

other other

coin coin

by by

the the

to to

contains contains

particular particular This This

the the

the the

"collect'' "collect''

SPC SPC

office. office. memory, memory,

13.8 13.8

code. code.

Position Position

she she

cord cord

quent quent

TSPS TSPS without without lA

idle

her.

of

a

the

a

the

is to the ticket

the

No.

memory

equip­

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call,

the

connects

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found keyshelf.

reading the

to in

a

operator

telephone lA

informa­

additional

operator

completed,

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this toll

of

and

equipment,

required

By stating

the

of

contents

has

call. her call a

handling

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the

her

No.

lA information.

area

TSPS

Traffic

program

pressing by

been

it

indicated

establishes

is the on

of

call. and

The

on

obtain

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this

SPC certain

by

No.

SYSTEMS

the

the

from and

commercial

pertinent

as

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fill

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customer

tape.

original

termination

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by

to then lamps

performs

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well

and

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from

the

statistical

she

request

to the

required),

POSITION

immediately

as

the

of

has

she

the

she

various

charging

functions

with

and

equipment

is

position (if

rate calling

information input

may

When

(AMA)

caused according

Subsequently,

magnetic

recognized lighted

of

call.

which display

13.14

Network

required

entering

an

a

place,

is

the

vary she amount

position

all

is

lOOB

SERVICE

of

assigned

circuit call

detects

call

etc.)

the

be

to

as

tone

next the

Whenever

of

billing

control

assistance eventual call.

the keyshelf, customer,

a

charging

on

takes with the

necessary

lamps

the call

TSPS

memory.

may

lA

the lighting

trunk

used

progress.

of a call,

the the

and

Accounting

correct

TRAFFIC

Switching

pattern

the

station,

its the

new

she

naturally

in

obtain process,

with

-

the to

No.

render of

on

storage

includes

the calling

the

serve the

in

of

releases

all

purpose. to later

13

the

to by

means

about

revealed coin

transferred active

SPC

analyzed

the

automatic

automatically of

call

line

to

type

conversing the

a

Message is

which

to

by

this

as

CH.

and

recording

same

to

be are

used

The

able

By

to

buttons

Each scanning disconnection

After

(the

through

from to

which

tape

trunk

lighting

ready

the the

rate

applicable,

operator

observing

now

its

reassociated

the

and

path is operator tion instructions

position the headset The information By

functions

for

ment for

the equipment, Usually, charge proper this not call in free Automatic depositing

is

devoted

particular

proper details

process CH. 13 - TRAFFIC SERVICE POSITION SYSTEMS

13.9 TYPICAL SERVICES PROVIDED The TSPS No. 1 system provides facilities for a number of different services. Some of these are briefly mentioned below. The TSPS operator may, whenever required, serve a Centralized Automatic Messa~eAccountinf (CAMA)·operator by obta1n1ng the necessary 1nformat1on rom the call1ng party and then keying the required data into the system. This routes the information to the CAMAoffice over a CAMA-TSPS No. 1 trunk line where the information is recorded. However, in this case, the information is not recorded on the TSPS Automatic Message Accounting (AMA) magnetic tape. Person-to-person calls may originate at either coin or nonco1n telephones. To obtain operator assistance the customer dials "0" (for Operator) plus the called number which may include an area code. By obtaining the called person's name and then by conversing with whoever answers the called number (and possible keying out a new telephone number for connection to a telephone at an alternate location,) the operator eventually (if successful) reaches the called person on the telephone line. When the con­ versation between the parties begins, the operator activates the automatic charge calculation process by pressing the ST TMG (start timing) button. She then depresses the POS RLS (position release) button which causes the call to "float" with no further attention from the TSPS operator required. A call is said to "float" when the TSPS position is dis­ connected from the trunk circuit after the necessary operations to est.blish the connection have been performed. The call is then monitored by the SPC No. lA equipment and at the conclusion of the call, if the call had originated at a noncoin station, proper charge entries are made on the AMA magnetic tape. If the call had originated at a coin station, it may at this time be returned to a TSPS position for further operator assistance. For Station-to-Station calls, operator assistance is usually not requ1red except if the call originates at a coin telephone. In such a case assistance is always required for the collection of the coins. When a toll call originates

13.15 ·

.

·

the_

.an

.

only

calls

in

the

be_. so

call-s,

n.on­

to

the to_

not

entry

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this any

obtain

.charge

number

sponsor's or

is

may by

Sue:h

_

Colle_ct

Credit

the

required

are

enables calls announces

noncoin

these the

request

established

as

a recording

(and

it

the

in

numbers without

must

TSPS

a

required

coin

of_

Bill1ng

the

if

be to

establish

specia.l

to

,called

customer,

uAuto

For

at

as

·referred

AMA

handles.

tape. is the the

calls

Unit.

operator a

.

that

known

-

.

SYSTEMS

occurs,

and

the

an, ;keyed

.

then

equipment

types then

number

· the

so

either

attendant the

party

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operator

is to

Bas.e

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arrangement

charged

Operator)

b.y

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this

(also

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causes.

at basis.

a

colllDlonly

operator

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(ANI)

the

the

ser'vice,

commercial ~the·r

magnetic

be

-

equipment

to

lposition

which

made

(for

POSITION

assistance the

is

calling

c~lls

call,)

This

·called

When

·

to

by

purposes,

operator IA in

tchboa·rd

AMA

be

TSPS

or

which

..

established

from

No.

the

"0"

delay'ed the

all

is requi-red

This

Calls" telephone from

.to

13.16

swi

the

the

occUJ'S, the

be

a

No.

~riginate.

"Q/Z"

time.

as eq'-lipment

it

.

SERVICE

order

ask

established

calls

TSPS

operator

dial

by

television

on connections

are

on

number button

office.

lA SPC If another)

business

may

until

which

this

in

be differs

motel

well the

or

Identification

equipment.

may

certain

must

by

the

number.

For

proper

No.

or

as

"Sequence properly

calls

a can called_a third

Whenever

TRAFFIC

local

When

after

call

calls

AMA

(guest)

into she

call. a

memory

-

obtained

information) recorded

the

radio

SPC

"collect"

the

into can

parties necessary

telephone,

the

Number

a call calls)

to

in

hotel

13 the

(one

called

be

be

as

at established

data.

GST

customer

number

The

in

call.

to

provide of

call_, The

a

by

call that

keys

the

be

"Hotel"

CH.

any

a accepted.

arr1ves

"guest"

(sometimes The must called

To

"Collectu

call

A

required

·

arrangement

a

stored

noncoin the type

telephones.

be

of it and

number,

called

time

also charged

a

Automatic the

made. sequence

the

as

be

sponsor

if

at available

the

that

recorded

number information dialing

"0-" the

other

in

operator

type that

of

be to coin operator. connections listeners

are

a may call Call" expense. it

"enterprise"

depresses of Card

number

will of

the

from

in

call)

new

to

the

the

third

possible

of

including

additional

the

calls,

the

obtain

only

charged.

are

noncoin the

using required

if

flexibility

into

services

SYSTEMS

or

by

must

be

cases

addition

it

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person

equipment,

handle

then

coin

the verify

will

key

and

most

inherent

the

lA

to

Third

or

possible

POSITION

and

operator

In

also a

charges. of

The No.

hotel,

system

to the

a

the

other

13.17

must SPC services

keyshelf,

the

SERVICE is

number,

number

programs positions

future.

of

the

she

of

many 1

the

it

calls,

the

"Charge

accept

the Card

position.

of

on

for

No.

in

on types

1

TRAFFIC

Card

case,

in

existing will

memory

-

key

No.

TSPS

(whether

Credit

13

this

the the

other allows

(because

buttons

memory.

Credit

the

in

in

TSPS must of

CH.

lA

On

customer

Similarly, available

Many

for

the

10-digit

customer

No.

system

memory)

the

the

the

outpulsing SPC operator its changing number become However,

with order

services. programs