Cisco WS-X4604-GWY - VoIP Gateway Spezifikationen Seite 47

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Seitenansicht 46
2-13
Cisco IP Telephony Network Design Guide
78-11103-03
Chapter 2 Campus Infrastructure Considerations
Power to IP Phones
Inline Power Configuration
The inline power method requires Catalyst software Release 5.5 for Catalyst
6000, Cisco CatOS 6.1 or higher for Catalyst 4000, and Cisco IOS Release
12.0(5)XU or later for Catalyst 3524-PWR. These software releases support all
the necessary commands to enable the switch to deliver power through the
power-enabled line card. You also have the option of explicitly not providing
power through the line card, but the auto detection feature has the capability of
determining whether an attached phone requires power or not.
Configuring the Inline Power Mode
The inline power mode can be configured on each port on the switch using the one
of the following commands.
For Cisco CatOS:
set port inlinepower mod/port {auto | off}
For native Cisco IOS:
Switch(config-if)# power inline {auto | never}
The two modes are defined as follows:
autoThe supervisor engine tells the port to supply power to the phone only
if it has discovered the phone using the phone discovery mechanism, as
described in the Establishing Power to the IP Phone section on page 2-12.
This is the default behavior.
offThe supervisor engine instructs the port not to apply power, even if it
can and if it knows that there is a connected Cisco IP Phone device.
If the set port inlinepower command executes successfully, the system displays
a message similar to
Inline power for port 7/1 set to auto
If the set port inlinepower command does not execute successfully, the system
prints a message similar to
Failed to set the inline power for port 7/1
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