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Chapter 6 Troubleshooting the Cisco IP Phone
Resolving Startup Problems
6-12
Cisco IP Phone Administration Guide for Cisco CallManager 3.3, Cisco IP Phones 7902G/7905G/7912G
OL-6313-01
Resolving Startup Problems
After installing a Cisco IP Phone into your network and adding it to
Cisco CallManager, the phone should start up as described in the “Verifying the
Phone Startup Process” section on page 3-9. If the phone does not start up
properly, these sections can help you resolve the problem:
• Symptom: Cisco IP Phone Does Not Start Up, page 6-12
• Symptom: Cisco IP Phone Not Registering with Cisco CallManager,
page 6-13
• Symptom: Cisco IP Phone Resetting, page 6-18
Note Any procedures that refer to an LCD screen display problem apply only to the
Cisco IP Phone models 7905G/7912G.
Symptom: Cisco IP Phone Does Not Start Up
If you connect a Cisco IP Phone into the network port, the LEDs should light up
and, on the Cisco IP Phone models 7905G/7912G, messages should appear on the
LCD display. (See the “Verifying the Phone Startup Process” section on page 3-9
for information on the normal startup process.) If the phone does not proceed
through this normal startup process, you must determine if the phone is functional
or if anything else in the configuration is causing the phone to not start up
properly.
After the phone is connected to power, the
phone handset indicator light is steady red
and the Menu button is steady green.
The phone has a duplicate IP address. See the “Assigning
an IP Address” section on page 4-15.
The phone Hold button flashes red and the
Menu button flashes green at the same
time.
The phone’s firmware is being upgraded. After the
upgrade, all LEDs on the phone should be off.
Problem Explanation