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Cisco Bug: CSCta69407 - DSP isn't told to "turn off" digits with mgcp dtmf-relay nte-gw / nte-ca

Last Modified

Feb 27, 2018

Products (1)

  • Cisco IOS

Known Affected Releases

12.4(22)T2 12.4(24.6)PI11r

Description (partial)

Symptom:
When using mgcp dtmf-relay type nte-gw, a sniffer trace will reveal that digits are sent both in-band (within the audio stream) and out-of-band (dtmf-relay).  Because of this, double digits can be seen in Unity and MeetingPlace.

Conditions:
GW with PRI/CAS backhaul via MGCP to CUCM and mgcp dtmf-relay configured to use nte-gw.

Related Community Discussions

DTMF duplicated in Genesys IVR
Hi all, I have this sceneario: PSTN(PRI)---GW---(mgcp)----CUCM 8.5------(sip)-----IVR Genesys   and     CUCM 8.5 ----(sip)------Other IVR  (the CUCM 8.5 is the same node) When I call from pstn to IVR and I try dtmf , this is duplicated in the IVR. When I try from ip phone, dtmf works fine. In CUCM , the SIP TK to IVR Genesys is configured with dtmf method RFC2833 and MTP required unchecked. The  IOS is 12.1.4M4, and is configured with (in CUCM) mgcp dtmf-relay voip codec all mode nse I found a bug: ...
Latest activity: Feb 12, 2014
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