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Cisco Unity Connections DTMF issues

DTMF issue with Cisco Unity Connections.

Scenario 1: Call comes in from SIP PSTN direct (no IOS Gateway) to auto Attendant, customer enters mailbox number, gets transferred to phone. Phone rings 3 times back to mailbox, and no DTMF accepted. (DTMF works initially, and then can't "0" out after call comes back to VoiceMail.

Scenario 2: Same call, but during the transfer call goes directly to mailbox, "0" out works fine. used the #2 when transferring.

Any Ideas? DTMF is set to no preference on both PSTN and Unity Connectiions SIP trunks in CUCM.



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