Intermittent Network Outages - Cisco 7925G Administration Manual

Intermittent Network Outages

Solution
Verify that the wireless configuration is correct. For example, check if the particular access point or switch
to which the phone is connected is down.
Related Topics
Site Survey Verification, on page 44
Intermittent Network Outages
Problem
Your network may be experiencing intermittent outages.
Solution
Intermittent network outages affect data and voice traffic differently. Your network might be experiencing
intermittent outages without detection. If so, data traffic can resend lost packets and verify that packets are
received and transmitted. However, voice traffic cannot recapture lost packets. Rather than retransmitting a
lost network connection, the phone resets and attempts to reconnect to the network. Contact the system
administrator for information on known problems in the voice network.
DHCP Settings Errors
Problem
The DHCP settings may be incorrect.
Solution
Try the following actions:
• Verify that you have properly configured the phone to use DHCP. See
• Verify that the DHCP server is set up properly.
• Verify the DHCP lease duration. Cisco recommends that you set the lease duration to 8 days.
Voice VLAN Setup Errors
Problem
If the Cisco Unified Wireless IP Phone appears to reset during heavy network usage (for example, following
extensive web surfing on a computer connected to same access point and switch as phone), it is likely that
you do not have a voice VLAN or the appropriate QoS settings configured.
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
216
229.
Troubleshooting
Verify DHCP Setup, on page