Appendix A Technical Specifications
Cable Specifications
A-2
Cisco IP Phone Administration Guide for Cisco CallManager 3.2, Cisco IP Phones 7960/7940/7910
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Cable Specifications
•RJ-11 jack for handset connection
•RJ-45 jack for the LAN 10/100BaseT conn ection (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 .1 inch (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.
Network and Access Port Pinouts
Although both the network and access ports a re used for network connectivity,
they serve different purposes and have different port pinouts.
Network Port Connector
Tabl e A-2 describes the network port connector pino uts.
Weight •Cisco IP Phone 7960/7940—1.6 kg (3.5 lb)
•Cisco IP Phone 7910—1.0 kg (2.2 lb)
Power •100-240 VAC, 50-60 Hz, 0.5 A—when using the AC adapter
•48 VDC, 0.2 A—when using the in-line power over the network
cable
Cables Two (2) pair of Category 3 for 10-Mbps cables
Two (2) pair of Category 5 for 100-Mbps cables
Distance Requirements As supported by the Ethernet Specification, it is assumed that most
Cisco IP Phones should be within 100m (330 feet) of a phone cl oset.
TableA-1 Cisco IP Phone Specifications (continued)
Specification Value or Range