[asterisk-bugs] [JIRA] (ASTERISK-22592) Asterisk sends SIP 488 to T38 fallback re-invite

[Rusty Newton (JIRA)]

Rusty Newton created ASTERISK-22592:
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             Summary: Asterisk sends SIP 488 to T38 fallback re-invite
                 Key: ASTERISK-22592
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22592
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_sip/T.38
    Affects Versions: 11.4.0
            Reporter: Francesco Trinca
            Assignee: Matt Jordan
            Severity: Critical


In the fallback (t38) processes Astersisk send SIP 488.
v=0
o=XXXXXXXXXXXXXXXXXx
s=-
c=IN IP4 110.191.0.70
t=0 0
m=audio 17006 RTP/AVP 8
a=rtpmap:8 PCMA/8000
a=ptime:20
m=image 0 RTP/AVP 0
c=IN IP4 110.191.0.70
<------------->
--- (13 headers 10 lines) ---
Sending to 10.198.0.70:5060 (no NAT)
Found RTP audio format 8
Found audio description format PCMA for ID 8

[Jul 26 16:45:56] WARNING[29737][C-00000003]: chan_sip.c:10307 process_sdp: Rejecting image media offer due to invalid or unsupported syntax: image 0 RTP/AVP 0

RFCs say: if port = 0 m=line must be ignored. 

Have a patch o solution ?




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