[asterisk-bugs] [JIRA] (ASTERISK-20752) ringing/progress on branched calls not working correctly on some branched calls

[Marcus Hunger (JIRA)]

Marcus Hunger created ASTERISK-20752:
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             Summary: ringing/progress on branched calls not working correctly on some branched calls
                 Key: ASTERISK-20752
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20752
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Applications/app_dial
    Affects Versions: 10.8.0
            Reporter: Marcus Hunger
            Severity: Minor


There are certain call-scenarios where transmitting of ringing-information fails on asterisk.

1) a branched call, first leg replies 486 immediately, second leg replies with 183 first, 180 after it. caller hears silence since progress frames are dropped and no ringing-generator is activated.

2) similar to 1), branched call, first leg replies 486, second and third legs reply 183 and 180.

this behavior is shown at least by asterisk version 1.6 and 10.*. i was not able to test it with 11 yet.

A patch fixing this issue for me will be attached.

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