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Cisco Bug: CSCtc73949 - Received audio frame with mismatched codec may cause DSP mem corruption

Last Modified

Feb 22, 2014

Products (4)

  • Cisco Unified IP Phone 7900 Series
  • Cisco Unified Wireless IP Phone 7925G
  • Cisco Unified Wireless IP Phone 7921G
  • Cisco Unified IP Conference Station 7937G

Known Affected Releases


Description (partial)


Intermittently 7921 may freeze/hang and drops calls. When it happens the user will have to remove battery pack and re-attach it back to bring the phone up again.


when there is a inbound SIP call using codec G729.
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