C-1
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.5 (SIP)
OL-20861-01
APPENDIX
C

Technical Specifications

The following sections describe the technical specifications for the Cisco Unified IP Phone 8961, 9951,
and 9971.
Physical and Operating Environment Specifications, page C-1
Cable Specifications, page C-2
Network and Computer Port Pinouts, page C-2

Physical and Operating Environment Specifications

Table C-1 shows the physical and operating environment specifications for the Cisco Unified
IP Phone 8961, 9951, and 9971.
Table C-1 Physical and Operating Specifications
Specification Value or Range
Operating temperature 32° to 104°F (0° to 40°C)
Operating relative humidity 10% to 95% (non-condensing)
Storage temperature 14° to 140°F (–10° to 60°C)
Height 8 in. (20.32 cm)
Width 10.5 in. (26.67 cm)
Depth 6 in. (15.24 cm)
Weight 3.5 lb. (1.6 kg)
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
Power consumed by the camera1
1. Applicable only for Cisco Unified IP Phone 9951 and 9971 only.
290mA (1.45W) (excluding the power consumed by the phone)
Cables Category 3/5/5e/6 for 10-Mbps cables with 4 pairs
Category 5/5e/6 for 100-Mbps cables with 4 pairs
Category 5e/6 for 1000-Mbps cables with 4 pairs
Note Cables have 4 pairs of wires for a total of 8 conductors.
Distance requirements As supported by the Ethernet Specification, it is assumed that the maximum cable
length between each Cisco Unified IP Phone and the switch is 330 feet (100 meters).