[asterisk-bugs] [JIRA] (ASTERISK-21673) Early media not properly handled on outbound TCP trunk

[dcitelecom (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-21673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=205770#comment-205770 ] 

dcitelecom commented on ASTERISK-21673:
---------------------------------------

so 183 session progress without SDP does not indicate early media according to the SIP RFC? Is Lync handling this wrong?
                
> Early media not properly handled on outbound TCP trunk
> ------------------------------------------------------
>
>                 Key: ASTERISK-21673
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21673
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/CallCompletionSupplementaryServices
>    Affects Versions: 11.3.0
>         Environment: FreePBX distro 3.211.63-7
> Centos 6.3, Asterisk 11.3.0 
>            Reporter: dcitelecom
>         Attachments: Early media Asterisk 11 log.txt
>
>
> Voxbone DID (defined in inbound routes) is sent out to customer trunk ABCco (TCP) trunk. They reply with 183 session progress (early media announcement) and Asterisk sends 180 ringing back to Voxbone.
> This is problematic where the DID is forwarded to a cell phone and the phone is off or the forwarding number was entered wrong. In both cases the user should hear an early media announcement that the user is not available or the number is not in service. Instead they hear a ring tone and don't know there is a problem. Log attached
> DIALPLAN
> exten => #0216479999999,1,Set(__FROM_DID=$
> {EXTEN}
> )
> exten => #0216479999999,n,Gosub(app-blacklist-check,s,1())
> exten => #0216479999999,n,Gosub(sub-record-cancel,s,1())
> exten => #0216479999999,n,Set(__REC_POLICY_MODE=never)
> exten => #0216479999999,n,Set(CDR(did)=$
> {FROM_DID}
> )
> exten => #0216479999999,n,ExecIf($[ "$
> {CALLERID(name)}
> " = "" ] ?Set(CALLERID(name)=$
> {CALLERID(num)}
> ))
> exten => #0216479999999,n,Set(CHANNEL(musicclass)=none)
> exten => #0216479999999,n,Set(__MOHCLASS=none)
> exten => #0216479999999,n,Set(__CALLINGPRES_SV=$
> {CALLERPRES()}
> )
> exten => #0216479999999,n,Set(CALLERPRES()=allowed_not_screened)
> exten => #0216479999999,n(dest-ext),Goto(ext-trunk,5,1)
> [ABCAsia] (trunk 5)
> disallow=all
> type=peer
> host=202.xxx.xxx.xxx
> transport=tcp
> allow=alaw
> allow=ulaw
> relaxdtmf=yes
> dtmfmode=rfc2833
> directmedia=yes
> context=from-ABCco-HK

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