Verifying Voice Vlan Configuration; Verifying That The Phones Have Not Been Intentionally Reset - Cisco 3951 Administration Manual

Cisco Unified IP Phone Resets Unexpectedly

Verifying Voice VLAN Configuration

Verifying that the Phones Have Not Been Intentionally Reset

Cisco Unified SIP Phone 3951 Administration Guide for Cisco Unified CallManager 5.1
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If the Cisco Unified IP Phone appears to reset during heavy network usage (for
example, following extensive web surfing on a computer connected to same
switch as 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.
If you are not the only administrator with access to Cisco Unified CallManager,
you should verify that no one else has intentionally reset the phones.
You can check whether a Cisco Unified SIP Phone model 3951 received a
command from Cisco Unified 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 Unified CallManager administration.
Reset-Restart—Phone closed due to receiving a Reset/Restart from
•
Cisco Unified CallManager administration.
Chapter 7 Troubleshooting and Maintenance
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