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B-3
Cisco IP Phone Administration Guide for Cisco CallManager 3.3, Cisco IP Phones 7902G/7905G/7912G
OL-6313-01
Appendix B Technical Specifications
Network Port Pinouts
Access Port Connector
Table B-3 describes the access port connector pinouts.
Table B-2 Network Port Connector Pinouts
Pin Number Function
1TD+
2TD-
3RD+
4 +48 Volts return
1
1. When used to receive power from an inline
power card in the Cisco Catalyst switch.
5 +48 Volts return
1
6RD-
7 +48 Volts source
1
8 +48 Volts source
1
Table B-3 Access Port Connector Pinouts
Pin Number Function
1RD+
2RD-
3TD+
4Not Used
5Not Used
6TD-
7Not Used
8Not Used