Cisco 7920 - Unified Wireless IP Phone VoIP, Руководство администратора

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Chapter 9 Troubleshooting the Cisco Wireless IP Phone 7920
Resolving Startup and Connectivity Problems
9-2
Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 4.0 and 4.1
OL-7104-01
Resolving Startup and Connectivity Problems
After installing a Cisco Wireless IP Phone on your network and adding it to
Cisco CallManager, the phone should start up as described in the
“Understanding
the Phone Startup Process” section on page 2-21 . If the phone does not start up
properly, see the following sections for troubleshooting information:
•
Symptom: The Cisco Wireless IP Phone Does Not Complete the Normal Start
Up Process, page 9-2
•
Symptom: The Cisco Wireless IP Phone Does Not Associate with a
Cisco Aironet Access Point, page 9-3
•
Symptom: The Cisco Wireless IP Phone Does Not Register with
Cisco CallManager, page 9-5
Symptom: The Cisco Wireless IP Phone Does Not Complete the
Normal Start Up Process
When a Cisco Wireless IP Phone connects to the wireless network, the phone
should go through its normal startup process and the phone screen should display
information. If the phone does not complete the startup process, the cause might
be due to low RF signal strength, network outages, a dead battery in the phone, or
the phone might not be functional.
To determine whether the phone is functional, follow these suggestions to
systematically eliminate these potential problems:
1.
Verify that the wired network is accessible by placing calls to and from other
wired Cisco IP Phones.
2.
Verify that the wireless network is accessible:
•
Power on another previously functional Cisco Wireless IP Phone 7920 to
verify that the access point is active.
•
Power on the Cisco Wireless IP Phone that will not start up and move to
a different access point location that is known to be good.
3.
Verify that the phone is receiving power:
•
If you see “Low Battery” on the phone screen, the battery might be dead.