Table C-1 shows the physical and operating environment specifications for the Cisco Unified IP Phone 7940G/7960G.
Table C-1 Physical and Operating Specifications
Value or Range
32° to 104°F (0° to 40°C)
Operating relative humidity
10% to 95% (non-condensing)
14° to 140°F (-10° to 60°C)
8 in. (20.32 cm)
10.5 in. (26.67 cm)
6 in. (15.24 cm)
3.5 lb (1.6 kg)
•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
As supported by the Ethernet Specification, it is assumed that most Cisco Unified IP Phones should be within 330 feet (100m) of a phone closet.
The Cisco Unified IP Phone 7940G/7960G has these cable requirements:
•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.
Network and Access Port Pinouts
Although both the network and access ports on the Cisco Unified IP Phone 7940G/7960Gare used for network connectivity, they serve different purposes and have different port pinouts.
Network Port Connector
Table C-2 describes the network port connector pinouts.