BRI
C–3
BRI
Each BRI module ships with a short cable, a long cable,
and an adapter. The cables provide RJ-45 modular plugs
and the adapter provides RJ-45 module jacks.
Use the following specifications when building your own
BRI cable:
❐
Maximum length 3,300 feet (1 kilometer)
❐
Shielded
❐
Stranded
❐
24-AWG cable
❐
2-pair, twisted-pair inside telephone wire
Caution
If you build your own BRI cable for use with the
ISDN BRI Network protocol, you must use the supplied
adapter.
Table C–1 lists the pin assignments for a BRI cable.
Table C–1. BRI Cable Pin Assignments
Pin
MCS
Network
1
Not used
Not used
2
Not used
Not used
3
Transmit
Receive
4
Receive
Transmit
5
Receive
Transmit
6
Transmit
Receive
7
Not used
Not used
8
Not used
Not used
