Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
How to Configure EtherSwitch HWICs
56
Book Title
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.
enable
2.
configure terminal
3.
interface fastethernet
interface-id
4.
power inline
{
auto
|
never
}
5.
end
6.
show power inline
DETAILED STEPS
Command
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
•
Enter your password if prompted.
Step 2
configure
terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
interface fastethernet
interface-id
Example:
Router(config)# interface fastethernet 0/3/1
Selects a particular Fast Ethernet interface for
configuration.
Step 4
power inline
{
auto
|
never
}
Example:
Router(config-if)# power inline auto
Configures the port to supply inline power automatically to a
Cisco IP phone.
•
Use
never
to permanently disable inline power on the
port.
