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Cisco Bug: CSCta49522 - CCM 7.1.2 - CallManager advertises wrong codecs to phone in re-INVITE

Last Modified

Jul 06, 2017

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases


Description (partial)


CallManager advertises wrong codec to the phone during re-INVITE call signalling, causing the phone to reject the call.


- IP Phone in G729 region
- NextOne SBC advertises both G711 and G729 codecs in initial call signalling
- CallManager advertises only G729 codec to both IP phone and NextOne SBC during initial call signalling
- During re-INVITE, NextOne SBC advertises both G711 and G729 codecs 
- CallManager doesn't filter out the G711 codec when sending SIP message to the IP phone
- Phone sends a SIP BYE and call fails
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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