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Cisco Bug: CSCut27483 - SIP KPML dtmf broken during call transfer.

Last Modified

Jun 11, 2018

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases


Description (partial)

Endpoint support for unsolicited notify dtmf is not removed correctly by sme,which results in transition from kpml->unsolicited notify by sme when the leaf node has broken media

SIP KPML DTMF not working, UCM is not forwarding the digits to CUC for cross-server login. 
SME cluster not subscribing for kpml, even leaf included KPML in the sip messages.

In this specific case, we observed in the below call flow, but it could happen on other call flows as well.

Call flow:- 
H323 GW -----UCM leaf 1 ----SCCP ---CUC cluster 1 ---transfers ---SCCP --Leaf 1 ----SIP ---SME ----Leaf 2 ----SIP ---CUC cluster 2
DTMF preference in sip trunk:- No preference.
H323 GW: - h225-signal.
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