Installation manual

72 20/10/2004 PS10270JENAA01
Wiring an S0 BRI bus
The S0 bus is a shielded two-pair cable. Depending on the bus length and topology, between
one and eight female RJ45 connectors can be connected to it, for up to four ISDN/S0 (BRI)
terminals.
Long bus (point to point)
The S0 bus is connected to the LS1 and LD4 and LD4N cards and powered at 40 V by the power
supply module as shown in the diagram below. The other end must be fitted with an ISO 8877
compliant male RJ45 connector.
Raccordement d’une interface S0 d’une carte LS1
T0 S0
Connector 1
TE1
NT
PBX
Connector fitted with
a resistor (100 Ohms, 1/4W
)
for bus adaptation
Maximum 800 m
100 100
8
7
6
5
4
3
2
1
RS+
RS-
ES+
ES-
1
4