Cisco 1600 Series Router Hardware Installation Guide
Cable Pinouts
C-6
Table C-5 56-kbps DSU/CSU (RJ-48S) Pinouts
Table C-6 ISDN BRI S/T Port Pinouts (RJ-45)
Table C-7 ISDN BRI U Port Pinouts (RJ-45)
8 Pin
1
1 Pins 3, 4, 5, and 6 are not
used.
Description
1 Transmit
2 Transmit
7 Receive
8 Receive
8 Pin
1
1 Pins 1, 2, 7, and 8 are not used.
TE
2
2 TE refers to terminal terminating layer 1 aspects of TE1, TA, and NT
functional groups. This applies to the Cisco 1603 and the ISDN BRI
S/T WAN interface card.
NT
3
3 NT refers to network terminating layer 1 aspects of NT1 and NT2
functional groups. This applies to the Cisco 1604 ISDN S/T port.
Polarity
3 Transmit Receive +
4 Receive Transmit +
5 Receive Transmit –
6 Transmit Receive –
8 Pin
1
1 Pins 1, 2, 7, and 8 are not used.
Function
3 No connection
4 Signal—Tip or Ring
5 Signal—Tip or Ring
6 No connection
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