
C-24 Cisco 2524 and Cisco 2525 Router User Guide
Table C-21 BRI Port (RJ-45) Pinouts
Table C-22 BRI Cable (RJ-45-to-RJ-45) Pinouts
1. Pins 1, 2, 7, and 8 are not used.
2. TE refers to terminal terminating layer 1 aspects of TE1,
TA, and NT2 functional groups.
3. NT refers to network terminating layer 1 aspects of NT1
and NT2 functional groups.
1. NT refers to the network terminating layer 1 aspects of NT1
and NT2 functional groups.
2. Pins 1, 2, 3, 6, 7, and 8 are not used.
3. LT refers to the line termination point (i.e., at the wall jack).
RJ-45
8 Pin
1
TE
2
NT
3
Polarity
3 Transmit Receive +
4 Receive Transmit +
5 Receive Transmit –
6 Transmit Receive –
NT
1
RJ-45 (8 Pin)
2
Wire
LT
3
RJ-45 (8 Pin)
4 Tip 4
5 Ring 5
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