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Cisco Bug: CSCvt80422 - RTP-NTE to OOB DTMF Interworking Failure over BDI with Dot1q Tagging

Last Modified

Sep 10, 2020

Products (1)

  • Cisco IOS

Known Affected Releases

16.9.5

Description (partial)

Symptom:
When RTP-NTE to OOB DTMF Interworking is performed on a router where a BDI Interface with Dot1q Tagging is used, the router does not generate the DTMF on the OOB side.

Example.

CUBE does not send the DTMF to CUCM over KPML
ITSP---SIP(RFC2833)---CUBE---SIP(KPML)---CUCM

CUBE does not send the DTMF to CUCM over SCCP
ITSP---SIP(RFC2833)---CUBE(Collocated MTP)---SCCP---CUCM

Conditions:
RTP-NTE to OOB DTMF Interworking while using BDI Interface with Dot1q Tagging
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