[asterisk-bugs] [JIRA] (ASTERISK-28817) chan_pjsip: constant DTMF tone if RTP is not setup yet

[Kevin Harwell (JIRA)]

Kevin Harwell created ASTERISK-28817:
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             Summary: chan_pjsip: constant DTMF tone if RTP is not setup yet
                 Key: ASTERISK-28817
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28817
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_pjsip
    Affects Versions: 17.3.0, 16.9.0, 13.32.0, GIT
            Reporter: Kevin Harwell
            Severity: Minor


If chan_pjsip is configured for DTMF_RFC_4733, and the core triggers a digit begin before media or rtp has been setup then it's possible the outgoing channel will hear a constant DTMF tone upon answering.

This happens because when there is no media or rtp chan_pjsip notifies the core to initiate inband DTMF. However, upon digit end media if media and rtp become available then chan_pjsip does not notify the core to stop inband DTMF. Thus the tone continues playing.



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