Appendix E Technical Specification; Cable Specifications - Cisco 7940 - IP Phone VoIP Administration Manual

Cable Specifications

Cable Specifications
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Network and Access Port Pinouts
Although both the network and access ports are used for network connectivity, they serve different
purposes and have different port pinouts.
Network Port Connector
Table E-2
Table E-2
Pin Number
1
2
3
4
5
6
7
8
1. When used to receive power from an inline
Access Port Connector
Table E-3
Table E-3
Pin Number
1
2
3
4
5
Cisco Unified IP Phone 7960G/7940G Administration Guide for Cisco Unified Communications Manager 7.0 (SCCP)
E-2
RJ-9 jack (4-conductor) for handset and headset connection.
RJ-11 jack for console access (labeled AUX or RS232).
RJ-45 jack for the LAN 10/100BaseT connection (labeled LAN).
RJ-45 jack for a second 10/100BaseT compliant connection (labeled PC).
48-volt power connector. The diameter of the center pin in the phone power jack (Switchcraft 712A)
is 0.1 in. (2.5 mm). The center pin is positive (+) voltage. The miniature power plug required to mate
with the power jack on the phone is a Switchcraft 760 or equivalent.
describes the network port connector pinouts.
Network Port Connector Pinouts
Function
TD+
TD-
RD+
+48 Volts return
+48 Volts return
RD-
+48 Volts source
+48 Volts source
power card in the Cisco Catalyst switch.
describes the access port connector pinouts.
Access Port Connector Pinouts
Function
RD+
RD-
TD+
Not Used
Not Used
1
1
1
1
Appendix E Technical Specifications
OL-15498-01