Cable Specifications - Cisco 7821 Administration Manual

Cable Specifications

Specification
Width
Depth
Weight
Power
Cables
Distance Requirements
Cable Specifications
• RJ-9 jack (4-conductor) for handset and headset connection.
• RJ-45 jack for the LAN 10/100BaseT connection (on Cisco IP Phones 7821 and 7861) and the LAN
• RJ-45 jack for a second 10/100BaseT compliant connection (on Cisco IP Phones 7821 and 7861) and
• 48-volt power connector.
Cisco IP Phone 7821, 7841, and 7861 Administration Guide for Cisco Unified Communications Manager 10.0
(SIP)
4
Value or range
• 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 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 7821, 7841, and 7861:
• Category 3/5/5e for 10-Mbps cables with 4 pairs
• Category 5/5e for 100-Mbps cables with 4 pairs
Note
Cisco IP Phone 7841: Category 5/5e for 1000-Mbps cables with 4 pairs
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).
1000BaseT connection (on the Cisco IP Phone 7841).
the LAN 1000BaseT connection (on the Cisco IP Phone 7841).
Cables have 4 pairs of wires for a total of 8
conductors.