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Cisco Bug: CSCvu11115 - IOS-XE MTP Fails to Interwork DTMF RFC2833 from Payload 100 to Payload 101

Last Modified

Sep 10, 2020

Products (1)

  • Cisco 4000 Series Integrated Services Routers

Known Affected Releases

16.6.7

Description (partial)

Symptom:
IOS-XE MTP Fails to Interwork DTMF RFC2833 from Payload 100 to Payload 101

DTMF messages come in to the MTP leg as payload 100 and they are sent on the other leg with the same payload instead of 101.

Conditions:
1 - IOS-XE Media Resource used for Payload Interworking.
2 - SubscribeMediaTonePayloadReq should be received on the MTP for only one of the MTP legs
3 - This same SubscribeMediaTonePayloadReq has to be received before completion of both OpenReceiveChannel and StartMediaTransmission on both legs.

Note= This issue affects all IOS-XE Versions prior fix.
Note = This issue does happen if 2 SubscribeMediaTonePayloadReq messages are received (one for each leg)
Note = This issue does not affect IOS Based Platforms
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