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Cisco Bug: CSCtb68088 - GW always takes static payload for G.726 flavors

Last Modified

Dec 11, 2010

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)


MGCP-GW is always taking the respective static PT each time even though the CA sends a dynamic PT. This can be seen in the voip rtp packet logs. However, there is no voice-path issues.


Establish an initial call with PCMU. Then send a MDCX with dynamic PT for codec G.726-16  [or g726-32 or g726-24] The call is established successfully. But in VoIP rtp debugs its seen that static payload-23 is taken for G.726-16 is taken. The same behavior is seen for the other 2 flavors of G.726 - G.726-32; G.726-24 also.

The regular mgcp configurations are done on the GW, no other specific configs.
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