PARTY LINE SYSTEM PLTS

Description A party line telephone system (PLTS) is a telephone system with permanently connected subscribers and featuring selective calling. It is especially suited for small private telephone systems with relatively few subscribers and low traffic density. However, more and more large electric utilities favour a seperation of their operational and administrative telephone system and use a party line line system for PLTS RACK their operational needs. The system make use of standard in-band touch tone signalling tones (DTMF) for selective calling. Furthermore, all connections throughout the system are on a 4-wire basis up to the telephone microphones and receivers. These features, when combined provide the following advantages. Echo free reception at good levels Fast signalling Easy expandability requiring no changes in the existing installation Solid state plug-in type modules provide for good maintainability Ease of establishing multy-party conference calls by simply dialling several numbers in sequence Design flexibility. The system modularity allows adaptation to almost any customers requirements. Low capital outlay 4-WIRE SETEL-D TELEPHONE The system consist of a 19" rack R7AH where bridging amplifiers type J3KA can be installed. As a 4W telephone set a SETEL-D can be connected to the bridging amplifiers. The SETEL-D is a 4-wire telephone with a selective DTMF number decoder. The bridging amplifier module J3KA serves as a combining unit for four 4 wire audio circuits. It is well suited for speech as well as voice data party line applications. Signals applied to an input of the J3KA are passed to all remaining outputs except its own. By means of twelve potentiometers and four jumpers (6 dB / 18 dB / 30 dB) the gain of any of these input to output paths can be adjusted individually. Inputs and outputs are provided with interruptible test jacks. Operation is from an unregulated DC supply of either 24 or 48V DC. Every J3KA needs its own IF-cable V9CT and up to eight J3KA can be mounted in the 19" rack R7AH. Typical Application Party Line Telephone System

Station A Station B Station C Station D

SETEL+ SETEL+ SETEL-D Telecommunications

311 321 331 For further information please 300 contact:

PABX Decoder J3KA J3KA J3KA Interface BlueCom AG Giessenstrasse 15 CH-8953 Dietikon Tel.: +41 44 748 48 18 Fax: +41 44 748 48 19 E-mail: [email protected] To Station E 611 SETEL-D SETEL+ : http//www.bluecom.ch 312 332 Data Party Line System Party Line Data Front End SCADA 4 Cable V Bridging amplifier J 19 Bridging Amplifier J Amplifier Bridging Description Ordering Information TechnicalData SETEL Connection Cable Mechanical Ambient Conditions Power supply 0 300 Cross Talk 300 Output Noise + 800 Frequency Response 4 4 Station A dBm output level W Outputs W Inputs 16 - Datasheet BCTS For technical data on the V Amplifier J Mounting Weight Dimensions Humidity Operating Temperature Range Input Current Max Input Voltage Input Voltage Wire selective telephone setSETELWire selective telephone " 9 ...... Hz dBm output level Max Return Loss Impedance Max Return Loss Impedance CT rack with one bridging amplifier J rack withonebridgingamplifier 3400 3400 . , Input Voltage Ripple - : 0 D . . : 9 dB gain Output Level Input Level CT J for Hz Hz : ( non condensing 3 KA , , ( 0 0 w x h xd : : 24 48 dB gain dB gain : : , ( w x h xd V DC V DC 1046 3 : KA 3 : KA . , ): DS Station B MODEM ): J 3 4 RTU - < ± + + > 600 + > 600 3 ) 65 - 1 10 16 16 KA KA wire selective telephone set SETEL - 14 14 dB 70 dB W W dBm on dBm on dBm dB dB dBm , , , 300 ( balanced balanced input to own output for mounting on a DIN rail 20 50 Can be installed in a 2 19 < 0 < 2 20 40 Hz . V 90 80 1 °C " .. ... 24 48 pp x kg screw type terminals on a metal block ... 30 % mA To Station F To Station rack 60 Station C 3 MODEM 146 ... V DC V DC 3400 - KA andcable V J V DC RTU D 3 V DC 55 KA / , amplifier J x x 483 483 Hz °C 180 x mm 155 + 400 Harmonic Distortion Gain Range ) 16 ( 3 Hz dBm outputdBm level max High Medium Low x KA MODEM 19 225 J RTU Station D , 3 9 " 0 KA : . : CT cabinet dB gain 8 mm J - : 3 D please consult the KA per rack ( 3 . 5 , ASA units height > > > BCPT BCPT BCTS BCTS 30 18 6 Order No MODEM dB Station E dB dB ) < 30 20 1047 1010 0 . 5 KA KA % . RTU )

Due to continous product improvements this specification is subject to change without notice Printed in Switzerland BCTS1010.DS.E2 09/08 Internet E Fax Tel CH Giessenstrasse BlueCom AG contact For informationfurther please Telecommunications - mail .: + - : + 8954 41 4819 748 44 41 74848 44 18 : : sales : http Dietikon @ // CableV www bluecom 15 . bluecom . ch 9 CT . ch