FunctionPin Number
BI_DB-2
BI_DA+3
BI_DD+4
BI_DD-5
BI_DA-6
BI_DC+7
BI_DC-8
BI stands for bidirectional, while DA, DB, DC, and DD stand for Data A, Data B, Data C, and Data
D respectively.
Note
Phone Power Requirements
The Cisco Unified IP Phone 8961, 9951, and 9971 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.
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.
Note
When connecting the phone to a Cisco switch which supports NG-PoE+, and both CDP and LLDP are enabled
on the switch, disable the LLDP protocol on the phone from the Cisco Unified Communications Manager
Administration.
The following table provides guidelines for Cisco Unified IP Phone 8961, 9951, and 9971 power.
Table 4: Guidelines for Cisco Unified IP Phone 8961, 9951, and 9971 Power
GuidelinesPower Type
The Cisco Unified IP Phone 8961, 9951, and 9971 uses the CP-PWR-CUBE-4
power supply.
You must use the CP-PWR-CUBE-4 when you deploy the Cisco
Unified IP Phone 9971 on a wireless network.
Note
External power: Provided
through the
CP-PWR-CUBE-4=
external power supply
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager
10.0
6
Phone Power Requirements
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