Cisco 7906G Administration Guide - Page 237

Chapter 9 Troubleshooting and Maintenance Resetting or Restoring the Cisco Unified IP Phone Table 9-2 Cisco Unified IP Phone Troubleshooting (continued) Summary Explanation Call established with the iLBC protocol does not show that the iLBC codec is being used Call statistics display does not show iLBC as the receiver/sender codec. 1. Check the following using Cisco Unified Communications Manager Administration: - Both phones are in the iLBC device pool. - The iLBC device pool is configured with the iLBC region. - The iLBC region is configured with the iLBC codec. 2. Capture a sniffer trace between the phone and Cisco Unified Communications Manager and verify that SCCP messages, OpenReceiveChannel, and StationMediaTransmit messages have media payload type value equal to 86. If so, the problem is with the phone; otherwise, the problem is with the Cisco Unified Communications Manager configuration. 3. Enable audio server debug and capture logs from both phones. If needed, enable Java debug. Resetting or Restoring the Cisco Unified IP Phone There are two methods for resetting or restoring the Cisco Unified IP Phone: • Performing a Basic Reset, page 9-22 • Performing a Factory Reset, page 9-23 OL-14585-01 Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 6.1 9-21