Cable Specifications; Network Port Pinouts - Cisco 7912G - IP Phone VoIP Administration Manual

Cable Specifications

Cable Specifications

Network Port Pinouts

Cisco IP Phone Administration Guide for Cisco CallManager 3.3, Cisco IP Phones 7902G/7905G/7912G
B-2
Table B-1 Physical and Operating Specification (continued)
Specification
Power
Cables
Distance Requirements As supported by the Ethernet Specification, it is
• RJ-11 jack for handset connection
RJ-45 jack for the LAN 10/100BASE-T connection (labeled LAN)
•
• 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.
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 B-2 describes the network port connector pinouts.
Value or Range
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
Two (2) pair of Category 3 for 10-Mbps cables
Two (2) pair of Category 5 for 100-Mbps cables
assumed that most Cisco IP Phones should be within
100m (330 feet) of a phone closet.
Appendix B Technical Specifications
OL-6313-01