Cisco IP Phone 6851

Value or RangeSpecification
1.356 lb. (615 g), excluding footstand and handsetWeight
• 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
•
Category 3/5/5e/6 for 10-Mbps cables with 4 pairs
•
Category 5/5e/6 for 100-Mbps cables with 4 pairs
•
Category 5/5e/6 for 1000-Mbps cables with 4 pairs
Cables
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).
Distance Requirements
For detailed technical information about the phone, see the datasheet at:
https://www.cisco.com/c/en/us/products/collaboration-endpoints/ip-phone-6800-series-multiplatform-firmware/
datasheet-listing.html
Cable Specifications
•
RJ-9 jack (4-conductor) for handset and headset connection.
•
RJ-45 jack for the LAN 10/100/1000BaseT connection.
•
RJ-45 jack for a second 10/100/1000BaseT connection.
•
5-volt power connector.
Network and Computer Port Pinouts
Although both the network and computer (access) ports are used for network connectivity, they serve different
purposes and have different port pinouts:
•
The network port is the 10/100/1000 SW port.
•
The computer (access) port is the 10/100/1000 PC port.
Network Port Connector
The following table describes the network port connector pinouts.
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
12
Cable Specifications