[asterisk-bugs] [JIRA] (ASTERISK-22063) Ringback tone is not heard by caller when the call is transferred using semi-attended transfer

[Matt Jordan (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-22063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=208285#comment-208285 ] 

Matt Jordan commented on ASTERISK-22063:
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That log file does not contain sufficient information to diagnose whether or not there is a problem. Please see [Collecting Debug Information|https://wiki.asterisk.org/wiki/display/AST/Collecting+Debug+Information] for instructions on how to collect a DEBUG log. In particular, please make sure that 'sip set debug on' is also enabled.

As an FYI, you aren't using "bridge_simple" to bridge the channels together. Up until Asterisk 12 (which is currently trunk), the bridging modules aren't used for anything other than ConfBridge, and bridge_simple isn't used by ConfBridge.

The channels are being bridged remotely however:

{noformat}
    -- Remotely bridging SIP/7950-00092c75 and SIP/2066-00092c76
{noformat}

Remotely bridging => direct media is enabled for these endpoints, which means media is flowing directly between them and not through Asterisk. As such, I would suspect that you have a NAT problem that is preventing media from being relayed during the attended transfer - which would be a configuration issue. Without seeing a DEBUG log however it is impossible to say for certain.
                
> Ringback tone is not heard by caller when the call is transferred using semi-attended transfer
> ----------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-22063
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22063
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>    Affects Versions: 11.3.0
>         Environment: Ubuntu
>            Reporter: Christine Alejandro
>            Assignee: Christine Alejandro
>            Severity: Minor
>         Attachments: config-file.txt, debug.txt
>
>
> Normal scenario: Caller A calls B. B will transfer A's call to C (semi-attended transfer). B will check first if C's phone is ringing before transferring the call. Caller A hears a ringback tone when B transferred the call to C.
> Scenario encountered: Caller A calls B. B will transfer A's call to C (semi-attended transfer). B will check first if C's phone is ringing before transferring the call. Caller A doesn't hear a ringback tone when B transferred the call to C.
> It is a hit or miss case. Sometimes caller A could hear a ringback tone.

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