[Asterisk-Users] Sound Quality

[WipeOut .]

Your choppy sound is most likely caused by the use of the GSM codec.. The GSM codec seems a little picky about which IP Phones it is going to interoperate with.. I have still not been able to get it to work at all well with any of the softphones I have tried or my Snom 200's..

Best bet is to use the G.711 codec (aLAW or uLAW)..

I have been running RedHat 9 with Asterisk for over a month and its been fine so its not likely to be an OS issue (I had the same bad sound using the GSM codec with RH7.3 and RH8)..


> Hi All,
> 
> I've just setup a test Asterisk system that allows incoming/outgoing calls via 
> an ISDN card (l4i) and incoming/outgoing calls via SIP (iconnecthere). I have 
> two SIP Softphones (Xten X-Lite) for making and receiving calls. 
> 
> When receiving an incoming call via the ISDN interface the sound quality is
> fine for the Softphone user (i can hear the caller perfectly), but the person 
> calling experiences very choppy sound. There are no breaks in the sound, but 
> it is very choppy, to the point where a conversation is not possible.
> 
> I installed Asterisk from CVS earlier this week. It is running on RedHat 9, 
> with a XP1600+ Processor, 384MB RAM. The ISDN card is an 'Elsa Microlink 
> ISDN PCI'.
> 
> I've searched through the archives but cannot find a resolution to the 
> problem. I've tried changing the compression used but this has little or no 
> effect. Has anyone got any hints or tips? 
> 
> Thanks,
> Nathan.
> 
> 
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users

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