Cisco Systems 7902G, 7905G, 7912G manual Symptom Cisco IP Phone Resetting

Chapter 6 Troubleshooting the Cisco IP Phone

Resolving Startup Problems

Step 6 Rename this to match the name of the configuration file for the problematic phone.

Use the convention SEP<MAC address>.cnf.xml, where <MAC address> is the MAC address for the deleted phone.

Step 7 Replace the old configuration file with the new one you created.

Step 8 Add the phone to Cisco CallManager database. See the “Adding Phones Manually” section on page 2-14for details.

Step 9 Power cycle the phone.

Symptom: Cisco IP Phone Resetting

Once a Cisco IP Phone has properly started up and registered with

Cisco CallManager, you can reset it, forcing it to go through the startup process. At times, you might want to intentionally do this. For example, if you want to force a firmware upgrade from Cisco CallManager on to the phone. Anytime a phone has to load a new image, it has to restart itself and re-register with Cisco CallManager using the new image

However, if users report that their phones appear to be resetting during calls or while idle on their desk, you should investigate the cause. If the network connection and Cisco CallManager connection are stable, the Cisco IP Phone should not reset on its own.

Typically, the cause of the phones resetting can be categorized by problems connecting to the Ethernet network or to Cisco CallManager. These sections can help you identify the cause in your network:

•Verifying Physical Connection, page 6-19

•Identifying Intermittent Network Outages, page 6-19

•Verifying DHCP Settings, page 6-19

•Checking Static IP Address Settings, page 6-19

•Verifying Voice VLAN Configuration, page 6-20

•Verifying that the Phones Have Not Been Intentionally Reset, page 6-20

•Eliminating DNS or Other Connectivity Errors, page 6-20

	Cisco IP Phone Administration Guide for Cisco CallManager 3.3, Cisco IP Phones 7902G/7905G/7912G
6-18	OL-6313-01