Cisco 7800 Series Administration Manual page 28

Computer Port Connector
Computer Port Connector
The following table describes the computer port connector pinouts.
Table 3: Computer (Access) Port Connector Pinouts
Pin Number
1
2
3
4
5
6
7
8
Note
Phone Power Requirements
The Cisco IP Phone can be powered with external power or with Power over Ethernet (PoE). A separate power
supply provides external power. The switch can provide PoE through the phone Ethernet cable.
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.
Table 4: Guidelines for Cisco IP Phone Power
Power Type
External power: Provided through the
CP-PWR-CUBE-3= external power supply
Cisco IP Phone 7800 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.
Function
BI_DB+
BI_DB-
BI_DA+
BI_DD+
BI_DD-
BI_DA-
BI_DC+
BI_DC-
Guidelines
The Cisco IP Phone uses the CP-PWR-CUBE-3 power
supply.
About the Cisco IP Phone