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Phone Reset Problems - Cisco 7832 Troubleshooting Manual

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Troubleshooting

Phone Reset Problems

If users report that their phones are resetting during calls or while the phones are idle on their desk, you should
investigate the cause. If the network connection and Third Party Call Control connection are stable, a Cisco
IP Phone should not reset.
Typically, a phone resets if it has problems in connecting to the Ethernet network or to Third Party Call
Control.
Phone Resets Due to 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.
Phone Resets Due to DHCP Setting Errors
Problem
The DHCP settings may be incorrect.
Solution
Verify that you have properly configured the phone to use DHCP. Verify that the DHCP server is set up
properly. Verify the DHCP lease duration. We recommend that you set the lease duration to 8 days.
Phone Resets Due to Incorrect Static IP Address
Problem
The static IP address assigned to the phone may be incorrect.
Solution
If the phone is assigned a static IP address, verify that you have entered the correct settings.
Cisco IP Conference Phone 7832 Multiplatform Phones Administration Guide
Phone Reset Problems
5

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