Cisco 7912G - Manual (Page 167)

D-3
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.0 (SIP), Cisco Unified IP Phones
OL-8131-01
Appendix D Technical Specifications
Network Port Pinouts
Access Port Connector
Table D-3 describes the access port connector pinouts.
Table D-2 Network Port Connector Pinouts
Pin Number Function
1 TD+
2 TD-
3 RD+
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
6 RD-
7 +48 Volts source
1
8 +48 Volts source
1
Table D-3 Access Port Connector Pinouts
Pin Number Function
1 RD+
2 RD-
3 TD+
4 Not Used
5 Not Used
6 TD-
7 Not Used
8 Not Used