[asterisk-bugs] [JIRA] (ASTERISK-28417) SDP negotiation issue

[Alan (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-28417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=247307#comment-247307 ] 

Alan commented on ASTERISK-28417:
---------------------------------

I have tested many times between 2 softphones and 2 Grandstreams and I never saw this problem before.
By the way, this even happens with the pjsua client shipped with pjproject 2.8.

I'll try to test with Asterisk 16, but it will take some time.



> SDP negotiation issue
> ---------------------
>
>                 Key: ASTERISK-28417
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28417
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/General, Resources/res_pjsip_sdp_rtp
>    Affects Versions: 13.26.0
>         Environment: Linux
>            Reporter: Alan
>            Severity: Minor
>              Labels: pjsip
>
> I compiled Asterisk 13.26.0 with external pjsip 2.6.
> Asterisk is in the same network as 2 phones:
> extension 11: software phone based on pjproject 2.8
> extension 02: hardware phone Grandstream GXV3240
> When 11 calls 02, audio works well but the video looks terrible.
> extract of SDP from 11 to Asterisk:
> m=video 4014 RTP/AVP 97 96
> c=IN IP4 10.6.0.254
> b=TIAS:256000
> a=rtcp:4015 IN IP4 10.6.0.254
> a=sendrecv
> a=rtpmap:97 H264/90000
> a=fmtp:97 profile-level-id=42e01e; packetization-mode=1
> a=rtpmap:96 H263-1998/90000
> a=fmtp:96 CIF=1;QCIF=1
> a=ssrc:1987299971 cname:719547ff01003a20
> extract of SDP from Asterisk to 02:
> m=video 4014 RTP/AVP 97 96
> c=IN IP4 10.6.0.254
> b=TIAS:256000
> a=rtcp:4015 IN IP4 10.6.0.254
> a=sendrecv
> a=rtpmap:97 H264/90000
> a=fmtp:97 profile-level-id=42e01e; packetization-mode=1
> a=rtpmap:96 H263-1998/90000
> a=fmtp:96 CIF=1;QCIF=1
> a=ssrc:1987299971 cname:719547ff01003a20
> extract of SDP from 02 to Asterisk:
> m=video 5006 RTP/AVP 99
> a=sendrecv
> a=rtcp:5007 IN IP4 10.6.0.244
> a=rtpmap:99 H264/90000
> a=fmtp:99 profile-level-id=42E014; packetization-mode=1
> a=content:main
> a=label:11
> extract of SDP from Asterisk to 11:
> m=video 19562 RTP/AVP 97
> a=rtpmap:97 H264/90000
> a=fmtp:97 packetization-mode=1;profile-level-id=42E01E
> a=sendrecv
> At this point the profile-level-id changed from 2.0 to 3.0.
> Could this be causing the video issue?



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