[asterisk-bugs] [Asterisk 0014917]: SIP video phone requires numberofmediastreams > 4 (chan_sip.c)
Asterisk Bug Tracker
noreply at bugs.digium.com
Thu Apr 16 18:13:18 CDT 2009
A NOTE has been added to this issue.
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http://bugs.digium.com/view.php?id=14917
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Reported By: moshili
Assigned To:
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Project: Asterisk
Issue ID: 14917
Category: Channels/chan_sip/Interoperability
Reproducibility: always
Severity: tweak
Priority: normal
Status: feedback
Asterisk Version: 1.4.24
Regression: No
SVN Branch (only for SVN checkouts, not tarball releases): N/A
SVN Revision (number only!):
Request Review:
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Date Submitted: 2009-04-16 14:58 CDT
Last Modified: 2009-04-16 18:13 CDT
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Summary: SIP video phone requires numberofmediastreams > 4
(chan_sip.c)
Description:
I have a SIP video phone that I need to connect to Asterisk 1.4. The video
phone sends a special invite message. The invite message includes an SDP
part with 4 m blocks (media blocks).
Since asterisk 1.4 can handle a max of 2 m blocks, this requires making a
tiny change on the ./channels/chan_sip.c file. The change will modify the
following line:
if (numberofmediastreams > 2)
to be changed to:
if (numberofmediastreams > 4)
I implemented the change on Asterisk 1.4. It was successful.
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Relationships ID Summary
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duplicate of 0014916 SIP video phone requires numberofmedias...
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(0103354) moshili (reporter) - 2009-04-16 18:13
http://bugs.digium.com/view.php?id=14917#c103354
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The video phone is called VIPR (VIsual Presence). It is a product of Aastra
company. Following are links to data sheets of couple of models:
http://www.aastra.se/cps/rde/xbcr/SID-3D8CCB6A-589A0551/11/vipr_br_en_LZT1023875.pdf
http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT1023877&Lang=EN&HighestFree=Y
I attached the SIP messages trace taken from the CLI of Asterisk (Asterisk
examines INVITE and finds 1 audio stream + 3 video streams therefore it
quits).
Additionally, I attached a SIP log showing the SIP messages on the SIP
server (the SIP proxy server that the video phone uses).
Finally, I attached a clarification for what each IP corresponds to.
Please let me know if any other info is needed.
Issue History
Date Modified Username Field Change
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2009-04-16 18:13 moshili Note Added: 0103354
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