Phone Power Requirements
The Cisco Unified IP Phone can be powered with external power or with Power over Ethernet (PoE). External
power is provided through a separate power supply. PoE is provided by a switch through the Ethernet cable
attached to a phone.
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
The following table provides guidelines for powering the Cisco Unified IP Phone 8941 and 8945.
Table 4: Guidelines for Powering the Cisco Unified IP Phone 8941 and 8945
Guidelines
Power Type
The Cisco Unified IP Phone 8941 and 8945 use the CP-PWR-CUBE-3
power supply.
External power: Provided through
the CP-PWR-CUBE-3 external
power supply.
The Cisco Unified IP Phone Power Injector may be used with any Cisco
Unified IP Phone. Functioning as a midspan device, the injector delivers
inline power to the attached phone. The Cisco Unified IP Phone Power
Injector is connected between a switch port and the IP Phone, and
supports a maximum cable length of 100 m between the unpowered
switch and the IP Phone.
External power: Provided through
the Cisco Unified IP Phone Power
Injector.
The Cisco Unified IP Phone 8941 supports IEEE 802.3af Class 1 power
on signal pairs and spare pairs.
The Cisco Unified IP Phone 8945 supports IEEE 802.3af Class 2 power
on signal pairs and spare pairs.
To ensure uninterruptible operation of the phone, make sure that the
switch has a backup power supply.
Make sure that the CatOS or IOS version running on your switch supports
your intended phone deployment. Refer to the switch documentation for
operating system version information.
PoE power: Provided by a switch
through the Ethernet cable
attached to the phone.
The inline power patch panel WS-PWR-PANEL is compatible with the
Cisco Unified IP Phone 8941 and 8945.
External power: Provided through
inline power patch panel
WS-PWR-PANEL
The following table provides guidelines for powering the Cisco Unified IP Phone 8941 and 8945.
Cisco Unified IP Phone 8941 and 8945 Administration Guide for Cisco Unified Communications Manager 10.0
(SCCP and SIP)
6
Phone Power Requirements
Содержание Unified IP Phone 8941
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