Checking Static Ip Address Settings; Verifying The Voice Vlan Configuration; Verifying That The Phones Have Not Been Intentionally Reset - Cisco 7961G Administration Manual

Cisco IP Phone Resets Unexpectedly

Checking Static IP Address Settings

Verifying the Voice VLAN Configuration

Verifying that the Phones Have Not Been Intentionally Reset

Cisco IP Phone Administration Guide for Cisco CallManager, Cisco IP Phone 7961G/7961G-GE and 7941G/7941G-GE
9-10
Cisco IP Phones send messages with request type 151 to renew their DHCP
address leases. If the DHCP server expects messages with request type 150,
the lease will be denied, forcing the phone to restart and request a new
IP address from the DHCP server.
If the phone has been assigned a static IP address, verify that you have entered the
correct settings. See the
more information.
If the Cisco IP Phone appears to reset during heavy network usage (for example,
following extensive web surfing on a computer connected to the same switch as
the phone), it is likely that you do not have a voice VLAN configured.
Isolating the phones on a separate auxiliary VLAN increases the quality of the
voice traffic. See the "Understanding How the Cisco IP Phone Interacts with the
VLAN" section on page 2-3
If you are not the only administrator with access to Cisco CallManager, you
should verify that no one else has intentionally reset the phones.
You can check whether a Cisco IP Phone received a command from
Cisco CallManager to reset by pressing the Settings button on the phone and
choosing Status > Network Statistics. If the phone was recently reset one of
these messages appears:
Reset-Reset—Phone closed due to receiving a Reset/Reset from
•
Cisco CallManager administration.
Reset-Restart—Phone closed due to receiving a Reset/Restart from
•
Cisco CallManager administration.
Chapter 9
"Network Configuration Menu" section on page 4-6
for details.
Troubleshooting and Maintenance
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for