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172 APPENDIX D: CONNECTORS AND CABLES
ISDN U Cable To connect a model 44x or model 54x bridge/router to an ISDN network,
use a Category 5 shielded twisted-pair cable with an RJ-45 connector on
the bridge/router end, and an RJ-11 connector at the wall. This cable
comes with your bridge/router.
Figure 26 shows the pinouts of the ISDN U cable.
Figure 26 ISDN U Cable
RJ-45 male (shielded)
To WAN port To wall outlet
12345 786
RJ-11 male (shielded)
12345 786
Name Pin Pin Name
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Not connected
Not connected
Not connected
Ring
Tip
Not connected
Not connected
Not connected
Not connected
Not connected
Not connected
Ring
Tip
Not connected
Not connected
Not connected