On Mon, 5 Jan 2004 13:29:06 +0100, "Dawid Mielnik" <[EMAIL PROTECTED]> wrote:
> >Hi Again, > >Apart from X-lite client I have also tried eStara, diax phone, iaxcomm and >some others. I have tried different codecs - GSM, aLAW uLAW. They all give >the same result. In the direction PSTN user ---> Softphone user the sound is >crystal clear (also tried on a dial-up connection), in the other direction >however the sound is a bit choppy. The chops occur at regular intervals of >time, at about 1-2 seconds !? Are the PSTN interface and a network card sharing an interrupt? I had similar problems with my X100P and a thunderlan dual ethernet card shring IRQs (also would make one of the ethernet ports fails until reboot) Are you still using the P133? I tried using a P120, but it wouldn't do the trick with GSM conversion. DIAX and iaxComm, since they use the iaxclient library, need to use GSM. > >When analyzing *'s ethernet interface with tcpdump (raw tcpdump -i eth0) I >have noticed that the scrolling slows down during the times when chops occur >in the sound. > >I have tested things using different softphones and different internet >connections (user side) - always yelding the same result. In other words >this is probably a problem on asterisk, either the hardware (ehternet >interface/E100p) or a swoftware bug, incoming RTP buffering maybe ? > >Has anyone actually obtained a good quality sound in a similar setup ? > > Internet 2 x E1 > x-lite <-------> Asterisk -------> PSTN > > >Any help appreciated ! > >Best regards, > >Dave > > >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] Behalf Of Nicolas >Gudino >Sent: Friday, January 02, 2004 6:35 PM >To: [EMAIL PROTECTED] >Subject: Re: [Asterisk-Users] one way choppy sound problem ! > > >I have a similar problem, with GS phones, X-Lite or Kphone. I tried all >the codecs with the same result. Choppy sound in the direction SIP-Phone >-> pstn, but crystal clear sound the other way around. The only >difference in my case is that I have two asterisks servers connected >together via IAX2, the PSTN call is received in one asterisk, while the >sip phones are in the other asterisk. Ex: > >pstn -> * --iax2--> * ->sip phone (GS, Xlite or Kphone) > >If I use an Xlite in the same asterisk as the pstn line, the sound is >perfect in both ways. But when I answer the call in the second asterisk, >the sound from the sip phone to pstn is choppy, with or without silence >detection, and the sound from pstn to sip phone is perfect. > >The asterisk server with the pstn line is an old pentium 133, maybe >thats the problem, I will try with a better machine and see how it goes. > > >On Fri, 2004-01-02 at 06:23, Dawid Mielnik wrote: >> Hi all, >> >> I have my asterisk setup as following: >> >> IP 2 x E1 >> x-lite <-------> Asterisk -------> PSTN >> >> >> When I place a call from x-lite to PSTN, the quality of the sound in the >> direction x-lite -> PSTN is very bad. That is, the voice of the x-lite >user, >> heard by the PSTN user is choppy and makes communication not very >pleasant. >> The sound is choppy as if bits of data were lost. The strange thing is >that >> the x-lite user hears the PSTN user fine ! >> >> In x-lite, I have swithed off sience detection (transmit silence - yes), >> this has improved the sound quality but did not eliminated the problem. I >> have fed a countinious sound into the microphone and still got chops in >the >> sound. I have also tried changing the codecs gsm, alaw, ulaw - but I get >the >> same problem with all of them. Maybe the problem lies somewhere in audio >> buffering settings on x-lite ? >> >> Has anyone ever had this sort of problem and managed to deal with it ? I >> would greatly appreciate your help ! >> >> Best regards, >> >> Dave >> >> >> _______________________________________________ >> Asterisk-Users mailing list >> [EMAIL PROTECTED] >> http://lists.digium.com/mailman/listinfo/asterisk-users >> > >_______________________________________________ >Asterisk-Users mailing list >[EMAIL PROTECTED] >http://lists.digium.com/mailman/listinfo/asterisk-users > > >_______________________________________________ >Asterisk-Users mailing list >[EMAIL PROTECTED] >http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
