 BGT
РСМ4А
РСМ11А
PCM5D
PGS4
PGS8
PGS12
PCM4,8,11,12 |
 | The PCM 4A Transmission System is designed for use in a local line circuit.
Four analog telephone connections can be used independently of each other with a single twin wire subscriber connection to the exchange using HDSL (High Bit Rate Digital Subscriber Line) technology, which is a combination of the 2B1Q coding, time-multiplex and echo compensation methods. A significant advantage of this system is that the use of expensive copper cable for the connection between exchange and subscriber is considerably reduced. |
 Transmission of four fully featured 64 kbps channels in transparent mode with identical range (acc. G.711-characteristics) using one copper pair
288 kbit/s - HDSL - transmission technology
Time multiplex and echo compensation method with 2B1Q-line code
Transmission characteristics acc. CCITT G.712
Bell impedance control und remote power feeding voltage control
System control with error signalling on the PCM4VA-unit
Remote power feeding voltage for all subscribers
Bell impedance checked with every call
CLIP - Calling Line Identification Presentation (optionally) |
Fast dilating of throughput capacity with existing lines
High noise immunity
Foolproof mounting
High profitability |
| System parameters |
Exchange battery voltage
Power consumption
Supply impedance
Transmission technology
Line code
Transmission range | 40...75 V
< 20 W
135 Ohm
288 kbit/s
2B1Q (4B3T optional)
approx. 4,7km with 0,4mm Co-pair
approx. 9,0km with 0,6mm Co-pair |
PCM4VA (19”-module)
PCM4TA (plastic outdoor casing) |
30 x 190 x 262 mm (1160 g)
155 x 57 x 215 mm (600 g) | +5 … +40 °C
-40 … +75 °С |
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