Cisco 7800 Series Administration Manual page 18

Physical and Operating Environment Specifications
Table 1: Physical and Operating Specifications
Specification
Operating temperature
Operating relative
humidity
Storage temperature
Height
Width
Depth
Weight
Power
Cables
Distance Requirements
Cisco IP Phone 7800 Series for Third-Party Call Control Administration Guide
4
Value or Range
32° to 104°F (0° to 40°C)
10% to 90% (noncondensing)
14° to 140°F (–10° to 60°C)
8.14 in. (207 mm)
• Cisco IP Phone 7811— 7.67 in. (195 mm)
• Cisco IP Phone 7821 — 8.11 in. (206 mm)
• Cisco IP Phone 7841 — 8.11 in. (206 mm)
• Cisco IP Phone 7861— 10.42 in. (264.91 mm)
1.1 in. (28 mm)
• Cisco IP Phone 7811— 0.84 kg
• Cisco IP Phone 7821 — 0.867 kg
• Cisco IP Phone 7841 — 0.868 kg
• Cisco IP Phone 7861— 1.053 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
Cisco IP Phone 7811, 7821, 7841, and 7861:
• Category 3/5/5e/6 for 10-Mbps cables with 4 pairs
• Category 5/5e/6 for 100-Mbps cables with 4 pairs
Cisco IP Phone 7841: Category 5/5e/6 for 1000-Mbps cables with 4 pairs
Cables have 4 pairs of wires for a total of 8
Note
conductors.
As supported by the Ethernet Specification, it is assumed that the maximum
cable length between each Cisco IP Phone and the switch is 100 meters (330 feet).