Technical data

Chapter 3 Hardware installation 33
Installation Checklist and Quick Start Guide
Figure 8 BRI ports and pin out (BCM50b shown)
The table BRI port wiring on page 33 and the table BRI line numbering on page 33 list the wiring
details for the RJ-45 ports.
Table 13 BRI port wiring
Pin Signal Signal on system side
1 No connection No connection
2 No connection No connection
3 + Receive (+Rx) +Tx
4 + Transmit (+Tx) +Rx
5 –Transmit (-Tx) –Rx
6 –Receive (-Rx) –Tx
7 No connection No connection
8 No connection No connection
Table 14 BRI line numbering
Port number
Default line numbers on
Expansion port 1
Default line numbers on
Expansion port 2
Default line
numbers
1 065–066 095–096 61
2 067–068 097–098 62
3 069–070 099–100 63
4 071–072 101–102 64
BRI port pin out
BRI ports