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

[Rusty Newton (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-22063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=209888#comment-209888 ] 

Rusty Newton commented on ASTERISK-22063:
-----------------------------------------

Thanks for the logs, but you forgot to turn on SIP debug so we could see the full SIP messages.

bq. In particular, please make sure that 'sip set debug on' is also enabled.

Please gather the debug again with SIP debug messages included.

To verify it is enabled, you'll see lines like the following in the log

{noformat}
INVITE sip:2000 at 192.168.1.55 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.245:5060;branch=z9hG4bK-e4c5b28d
From: "6001" <sip:6001 at 192.168.1.55>;tag=915b34dcbc3a6e0co0
To: <sip:2000 at 192.168.1.55>
Call-ID: 22c7991c-6bff56cc at 192.168.1.245
CSeq: 101 INVITE
{noformat}
They won't have a log message prefix such as DEBUG,VERBOSE, WARNING, etc.


Additionally, if you can use wireshark or tcpdump to capture both the SIP and RTP traffic for the same calls you capture debug for; that would be extremely helpful.
                
> 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, transfer-ringback-failed.txt, transfer-ringback-successful.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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