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Do you have silence suppression enabled on your clients? Asterisk can't work with silence suppression. Take a look at <A HREF="http://bugs.digium.com/view.php?id=5374">http://bugs.digium.com/view.php?id=5374</A> , the patch works fine to me, now I'm able to set SS and save bandwidth.<BR>
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On Mon, 2005-11-07 at 19:41 -0800, Chris Tracy wrote:
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<FONT COLOR="#000000"> I recently resurrected an old athlon system and put CentOS 4.2 on </FONT>
<FONT COLOR="#000000">it to play with asterisk. First I tried asterisk-1.0.9, now I'm using </FONT>
<FONT COLOR="#000000">1.2.0-b2. Both have the same audio issues that have me stumped.</FONT>
<FONT COLOR="#000000"> I looked through all the lists and forums and the closest I could </FONT>
<FONT COLOR="#000000">get were some messages from 2003:</FONT>
<FONT COLOR="#000000"><A HREF="http://lists.digium.com/pipermail/asterisk-users/2003-August/017171.html">http://lists.digium.com/pipermail/asterisk-users/2003-August/017171.html</A></FONT>
<FONT COLOR="#000000"> I've got asterisk set up with my xten-lite softphone on extension </FONT>
<FONT COLOR="#000000">200 over SIP. I've configured extension 611 as an echo test and 612 will </FONT>
<FONT COLOR="#000000">play 30 seconds of MusicOnHold. I can connect to both just fine, however, </FONT>
<FONT COLOR="#000000">they sound rather bad when they work (quite muddy) and periodically they </FONT>
<FONT COLOR="#000000">just drop out for as much as 5 seconds before coming back.</FONT>
<FONT COLOR="#000000"> Enabling all the debugging and verbosity options, I've found a few </FONT>
<FONT COLOR="#000000">messages that occur during each drop. During the MOH run, every time </FONT>
<FONT COLOR="#000000">there's a drop, the console scrolls:</FONT>
<FONT COLOR="#000000">res_musiconhold.c:535 monmp3thread: Only wrote -1 of 640 bytes to pipe</FONT>
<FONT COLOR="#000000">over and over until the sound comes back, at which point, the console </FONT>
<FONT COLOR="#000000">message:</FONT>
<FONT COLOR="#000000">rtp.c:1247 ast_rtp_raw_write: Difference is 33824, ms is 4248</FONT>
<FONT COLOR="#000000">is displayed. (Not always the same numbers in that one, obviously)</FONT>
<FONT COLOR="#000000"> In the echo test, again, after a drop, the audio returns and a </FONT>
<FONT COLOR="#000000">message similar to:</FONT>
<FONT COLOR="#000000">rtp.c:1247 ast_rtp_raw_write: Difference is 12496, ms is 1582</FONT>
<FONT COLOR="#000000">is displayed.</FONT>
<FONT COLOR="#000000"> The asterisk server is on a single Athlon MP 1600+ (1.4GHz) with </FONT>
<FONT COLOR="#000000">512MB of RAM. It's got a K7D-Master mobo, and is connected to the system </FONT>
<FONT COLOR="#000000">running the softphone through a 100Mbit LAN.</FONT>
<FONT COLOR="#000000"> I've not enabled any of the MMX optimizations as there were </FONT>
<FONT COLOR="#000000">warnings that they didn't play nice with AMD chips.</FONT>
<FONT COLOR="#000000"> If there's any further info I can provide, I'd be happy to.</FONT>
<FONT COLOR="#000000"> Thanks,</FONT>
<FONT COLOR="#000000"> Chris</FONT>
<FONT COLOR="#000000">_______________________________________________</FONT>
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