[asterisk-bugs] [JIRA] (ASTERISK-24835) Early Media Not working with Chan SIP and Asterisk 13

[Kevin Harwell (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-24835?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kevin Harwell updated ASTERISK-24835:
-------------------------------------

    Reviewboard Link: https://reviewboard.asterisk.org/r/4606/

> Early Media Not working with Chan SIP and Asterisk 13
> -----------------------------------------------------
>
>                 Key: ASTERISK-24835
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24835
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/General
>    Affects Versions: 13.1.1
>            Reporter: Andrew Nagy
>            Assignee: Kevin Harwell
>            Severity: Critical
>         Attachments: dialplan.txt
>
>
> Early media is not working in Asterisk 13 when using Chan_SIP. It works fine when using PJSIP. The reasoning appears to be that Chan_SIP is sending 180 ringing when it's told to "Progress" while PJSIP is sending 183 when it's told to progress.
> I have attached inline a snipet of a chan_sip dial and a pjsip dial. You will see the differences there in. Specifically:
> CHAN_SIP (13):
> {code}
>     -- Executing [999 at from-internal:3] Progress("SIP/1002-00000085", "") in new stack
> <--- Transmitting (NAT) to XXX.XXX.XXX.XXX:5064 --->
> SIP/2.0 180 Ringing
> Via: SIP/2.0/UDP 10.10.10.12:5064;branch=z9hG4bK2113418340;received=XXX.XXX.XXX.XXX;rport=5064
> From: <sip:1002 at my.server.net:5061>;tag=706301242
> To: <sip:999 at my.server.net:5061>;tag=as3db28b80
> Call-ID: 2099708635-5064-5 at BA.BA.BA.BC
> CSeq: 41 INVITE
> Server: FPBX-13.0.1alpha1(13.1.1)
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:999 at XXX.XXX.XXX.XXXX:5061>
> Content-Length: 0
> <------------>
> {code}
> CHAN_PJSIP (13):
> {code}
>     -- Executing [999 at from-internal:3] Progress("PJSIP/1001-000000aa", "") in new stack
> <--- Transmitting SIP response (827 bytes) to UDP:XXX.XXX.XXX.XXX:5060 --->
> SIP/2.0 183 Session Progress
> Via: SIP/2.0/UDP 10.10.10.12:5060;rport=5060;received=XXX.XXX.XXX.XXX;branch=z9hG4bK503980922
> Call-ID: 70708105-5060-5 at BA.BA.BA.BC
> From: "Andrew Nagy" <sip:1001 at my.server.net>;tag=1590118380
> To: <sip:999 at my.server.net>;tag=AvwkMijOGvO1QXW1qDcNXl8xlBqUW.Ux
> CSeq: 41 INVITE
> Server: FPBX-13.0.1alpha1(13.1.1)
> Contact: <sip:XXX.XXX.XXX.XXXX:5065>
> Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, MESSAGE, REGISTER, REFER
> Content-Type: application/sdp
> Content-Length:   255
> v=0
> o=- 8004 8002 IN IP4 XXX.XXX.XXX.XXXX
> s=Asterisk
> c=IN IP4 XXX.XXX.XXX.XXXX
> t=0 0
> m=audio 14388 RTP/AVP 0 8 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> a=ptime:20
> a=maxptime:150
> a=sendrecv
> {code}
> CHAN_SIP(11.16.0)
> {code}
>     -- Executing [999 at from-internal:3] Progress("SIP/1002-00000001", "") in new stack
> Audio is at 12696
> Adding codec 100003 (ulaw) to SDP
> Adding codec 100004 (alaw) to SDP
> Adding non-codec 0x1 (telephone-event) to SDP
> <--- Transmitting (NAT) to XXX.XXX.XXX.XXX:5064 --->
> SIP/2.0 183 Session Progress
> Via: SIP/2.0/UDP 10.10.10.12:5064;branch=z9hG4bK1753731864;received=XXX.XXX.XXX.XXX;rport=5064
> From: <sip:1002 at my.server.net:5061>;tag=9700035
> To: <sip:999 at my.server.net:5061>;tag=as5bd4933a
> Call-ID: 1953294974-5064-7 at BA.BA.BA.BC
> CSeq: 61 INVITE
> Server: FPBX-13.0.1alpha1(13.1.1)
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:999 at XXX.XXX.XXX.XXXX:5061>
> Content-Type: application/sdp
> Require: timer
> Content-Length: 264
> v=0
> o=root 424885368 424885368 IN IP4 XXX.XXX.XXX.XXXX
> s=Asterisk PBX 11.16.0
> c=IN IP4 XXX.XXX.XXX.XXXX
> t=0 0
> m=audio 12696 RTP/AVP 0 8 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> a=ptime:20
> a=sendrecv
> <------------>
> {code}
> The above logs were generated from the dialplan below
> {code}
> [bad-number]
> include => bad-number-custom
> exten => _X.,1,ResetCDR()
> exten => _X.,n,NoCDR()
> exten => _X.,n,Progress
> exten => _X.,n,Wait(1)
> exten => _X.,n,Progress
> exten => _X.,n,Playback(silence/1&cannot-complete-as-dialed&check-number-dial-again,noanswer)
> exten => _X.,n,Wait(1)
> exten => _X.,n,Congestion(20)
> exten => _X.,n,Hangup
> {code}
> I have, however, attached a simplified dialplan for testing in the attachments.



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