[asterisk-bugs] [JIRA] (ASTERISK-21538) [patch] DTMF end is not always processed, causes one-way audio

[Rusty Newton (JIRA)]

Rusty Newton created ASTERISK-21538:
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             Summary: [patch] DTMF end is not always processed, causes one-way audio
                 Key: ASTERISK-21538
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21538
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Resources/res_rtp_asterisk
    Affects Versions: SVN, 1.8.22.0, 11.4.0
            Reporter: Corey Farrell


Some Cisco IVR's will tell Asterisk to stop sending RTP as soon as DTMF start is received.  Then the Cisco redirects the call to a new destination.  Once the IVR destination answers, asterisk resumes sending DTMF since we were not sending rtp when it should have processed DTMF end.  This causes one-way audio for the duration of the call.

My patch has been tested on the customer's system with Asterisk 11.2.1.

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