Cisco 6800 Series Administration Manual page 28

Phone Power Requirements
Table 3: Computer (Access) Port Connector Pinouts
Pin Number
1
2
3
4
5
6
7
8
Note
Phone Power Requirements
The following table describes the ways to provide power to the phones.
Phone
Cisco IP Phone 6821 Multiplatform
Phones
Cisco IP Phone 6841 Multiplatform
Phones
Cisco IP Phone 6851 Multiplatform
Phones
Cisco IP Phone 6861 Multiplatform
Phones
Note
When you install a phone that is powered with external power, connect the power supply to the phone and to
a power outlet before you connect the Ethernet cable to the phone. When you remove a phone that is powered
with external power, disconnect the Ethernet cable from the phone before you disconnect the power supply.
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
14
BI stands for bidirectional, while DA, DB, DC, and DD stand for Data A, Data B, Data C, and
Data D respectively.
PoE Through Ethernet
Supported
Not supported
Supported
Not supported
Function
BI_DB+
BI_DB-
BI_DA+
BI_DD+
BI_DD-
BI_DA-
BI_DC+
BI_DC-
Separate External Power
Supported
Supported
Supported
Supported
About the Cisco IP Phone