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Cisco 811 and Cisco 813 Routers Hardware Installation Guide
78-10188-03
Appendix A Technical Specifications
Port Connector Pinouts
Table A-6 ISDN BRI U Connector Pinouts (RJ-11)
Pin Function
1Unused
2Unused
3 U interface network connection
(Ring)
4 U interface network connection
(Tip)
5Unused
6Unused
Table A-7 Telephone Connector Pinouts (RJ-11)
Pin Function
1Unused
2Unused
3Ring
4Tip
5Unused
6Unused