Does FS supports speex with ptime=40?
I am testing making calls with x-lite 4. Although it doesn't send a ptime in its INVITE/SDP, i can see it is sending RTP using ptime=40 as I can count 25 UDP packets per second. When I try to bridge this to PSTN which responds with PCMU, at the PSTN side I hear trembling/metallic/robotic audio. I was suggested to set FS to use ptime=40, so I've tried setting codecs with speex@8000h@40i But it doesn't work. I get: "488 Not Acceptable Here" (Reason: Q.850;cause=88;text="INCOMPATIBLE_DESTINATION) So it seems only ptime=20 is supported as listed here: http://wiki.freeswitch.org/wiki/Codecs#Transcodable_codecs Could mod_speex be changed to work with ptime=40 too? Or is there anything else that i can try? regards, takeshi
Nope. /b On Apr 28, 2011, at 8:18 AM, mayamatakeshi wrote:
I am testing making calls with x-lite 4. Although it doesn't send a ptime in its INVITE/SDP, i can see it is sending RTP using ptime=40 as I can count 25 UDP packets per second. When I try to bridge this to PSTN which responds with PCMU, at the PSTN side I hear trembling/metallic/robotic audio.
I was suggested to set FS to use ptime=40, so I've tried setting codecs with speex@8000h@40i
But it doesn't work. I get: "488 Not Acceptable Here" (Reason: Q.850;cause=88;text="INCOMPATIBLE_DESTINATION)
So it seems only ptime=20 is supported as listed here: http://wiki.freeswitch.org/wiki/Codecs#Transcodable_codecs
Could mod_speex be changed to work with ptime=40 too? Or is there anything else that i can try?
regards, takeshi _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
On Thu, Apr 28, 2011 at 11:32 PM, Brian West <brian@freeswitch.org> wrote:
Nope.
Brian, thanks. But could you elaborate a little? Is this an issue with the underlying speex lib? It is not possible or hard to make it work with ptime=40? If it is possible but not implemented due to lack of users, we could offer a bounty. (the issue with x-lite not advertising ptime=40 I think I can solve with opensips/kamailio in front of FS, by correctlng the SDP). regards, takeshi
On Apr 28, 2011, at 8:18 AM, mayamatakeshi wrote:
I am testing making calls with x-lite 4. Although it doesn't send a ptime in its INVITE/SDP, i can see it is sending RTP using ptime=40 as I can count 25 UDP packets per second. When I try to bridge this to PSTN which responds with PCMU, at the PSTN side I hear trembling/metallic/robotic audio.
I was suggested to set FS to use ptime=40, so I've tried setting codecs with speex@8000h@40i
But it doesn't work. I get: "488 Not Acceptable Here" (Reason: Q.850;cause=88;text="INCOMPATIBLE_DESTINATION)
So it seems only ptime=20 is supported as listed here: http://wiki.freeswitch.org/wiki/Codecs#Transcodable_codecs
Could mod_speex be changed to work with ptime=40 too? Or is there anything else that i can try?
regards, takeshi _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
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Brian West
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mayamatakeshi