Conferance audio is braking up

General Help
1

we are running a conference (confbridge) for are business. we have to rooms and sometime the audio sounds all broken up

using freepbx 2.11.0.37/ conference app is 2.11.0.6

these are some logs that i have notice any reason for this

[2014-11-27 14:31:27] NOTICE[15843][C-00000129] channel.c: Dropping incompatible voice frame on SIP/avarphonex-00000128 of format ulaw since our native format has changed to (alaw)
[2014-11-27 14:31:27] NOTICE[15843][C-00000129] channel.c: Dropping incompatible voice frame on SIP/avarphonex-00000128 of format alaw since our native format has changed to (ulaw)
[2014-11-27 14:31:27] NOTICE[15843][C-00000129] channel.c: Dropping incompatible voice frame on SIP/avarphonex-00000128 of format ulaw since our native format has changed to (alaw)
[2014-11-27 14:31:39] VERBOSE[15843][C-00000129] app_read.c: – User entered

thanks for all your help

2

Nbrandt,

Go to Settings --> asterisk sip settings -->

What codecs do you have checked? If you enable ulaw does it solve the problem

3

went to that place and this is what is check marked

alaw,ulaw,gsm

4

What is your carrier sending you for codec. based on what you have here it appears you have asterisk transcoding calls which is very CPU intensive. I would restrict the codecs to ulaw and make sure you trunk is setup for ulaw only.

5

thanks for pointing me in that direction, ill give it a shot and let you know

thanks again

6

Tony and Nbrandt,
I asked my provider the other day if its okay to limit pbx to only allow ulaw, they said no.

They will try to only send me ulaw calls, but if a g729 comes from another carrier, the call could be dropped if i only allow ulaw, so im taking my chances with cpu transcoding if that happens.

Tony,
Can you fill me on this: if my phones support g729, then is it passed thru without having to transcode? Now for conference bridges or voicemail, those can only accept ulaw tho right? Requiring transcoding of other codecs

7

You are correct and it has to transcode on anything. IVRs, Conference Rooms. you name it