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How to Configure EtherSwitch HWICs
Configuring Power Management on the Interface
The HWICs can supply inline power to a Cisco 7960 IP phone, if necessary. The Cisco 7960 IP phone
can also be connected to an AC power source and supply its own power to the voice circuit. When the
Cisco 7960 IP phone is supplying its own power, an HWICs can forward IP voice traffic to and from the
phone.
A detection mechanism on the HWIC determines whether it is connected to a Cisco 7960 IP phone. If
the switch senses that there is no power on the circuit, the switch supplies the power. If there is power
on the circuit, the switch does not supply it.
You can configure the switch never to supply power to the Cisco 7960 IP phone and to disable the
detection mechanism.
Follow these steps to manage the powering of the Cisco IP phones.
SUMMARY STEPS
1.
2.
3.
4.
5.
6.
DETAILED STEPS
Command
Step 1
enable
Example:
Router> enable
Step 2
configure terminal
Example:
Router# configure terminal
Step 3
interface fastethernet interface-id
Example:
Router(config)# interface fastethernet 0/3/1
Step 4
power inline {auto |never}
Example:
Router(config-if)# power inline auto
Book Title
56
enable
configure terminal
interface fastethernet interface-id
power inline {auto | never}
end
show power inline
Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
Purpose
Enables privileged EXEC mode.
•
Enter your password if prompted.
Enters global configuration mode.
Selects a particular Fast Ethernet interface for
configuration.
Configures the port to supply inline power automatically to a
Cisco IP phone.
Use never to permanently disable inline power on the
•
port.
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