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Cisco Bug: CSCtb96960 - MGCP show CLI discrepancy during mid-call codec change

Last Modified

Aug 26, 2013

Products (2)

  • Cisco IOS
  • Cisco 6500/7600 Series Multiprocessor WAN Application Module

Known Affected Releases


Description (partial)

In multiple Mid-call changes scenario - there is a discrepancy with the 'show call active voice compact' CLI.
The TELE call-leg always shows the previously negotiated codec instead of the current one. 

The debug voip rtp shows the correct codec type and there is voice path also.
For example, the previous codec was PCMU and the current codec is g729br8 then , 

MGCP-1#show call active voice compact
 <callID>  A/O FAX T<sec> Codec       type  Peer Address       IP R<ip>:<udp>
Total call-legs: 2
        12 ANS     T1143  g711ulaw    TELE  P
        13 ORG     T1141  g729br8     VOIP  P
MGCP-1#show voice call summary
PORT           CODEC    VAD VTSP STATE            VPM STATE
============== ======== === ==================== ======================
1/0/0         g729br8   y  S_CONNECT             FXSLS_CONNECT
1/0/1         -         -  -                     FXSLS_ONHOOK
This is seen when codec changes during mid-call.
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