[Asterisk-Users] TDM-400P Sound Quality issues
I'm running a TDM-400P with 2 x FXS and 2 x FXO. I'm finding that there seems to be an odd relationship to sound quality on the card to my local when connecting via a SIP client. When I'm on my local network, if I connect to Asterisk via a SIP client (such as x-pro), and dial an outside line through the card, sound quality seems quite good. However, when I'm at a remote location and connect via the same SIP client and dial an outside line, the audio quality is fuzzy, sometimes quiet, and generally more difficult to understand. I spent a bunch of time troubleshooting the SIP end of things, thinking that's where the problem was, until I realized that every other SIP connection I make (from remote) yields a high quality call. ie. I can dial another SIP client and maintain high quality audio. Additionally, I can dial an extension that not only SIP connects to my server, but from there goes out an IAX2 connection to another remote Asterisk server, from there to another SIP client, and the audio quality is excellent. Therefore, I don't think the audio issue I'm experiencing is on the SIP end. Are there some wierd SIP - ZAP timing / conversion / other issues that could be causing this? thoughts? regards, Paul ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] TDM-400P Sound Quality issues
I spent a bunch of time troubleshooting the SIP end of things, thinking that's where the problem was, until I realized that every other SIP connection I make (from remote) yields a high quality call. ie. I can dial another SIP client and maintain high quality audio. Additionally, I can dial an extension that not only SIP connects to my server, but from there goes out an IAX2 connection to another remote Asterisk server, from there to another SIP client, and the audio quality is excellent. Therefore, I don't think the audio issue I'm experiencing is on the SIP end. Are there some wierd SIP - ZAP timing / conversion / other issues that could be causing this? thoughts? Pure guess... you're probably bumping into some of the same issues that many of us TDM users are hitting. Seems like either an interrupt handling (latency) or pci bus issue. You'll find hundreds of postings relative to this over the last six months or so. Not everyone has problems with the TDM, but some have found that swapping motherboards does clear up the issue. Processor speed and ram have nothing to do with it, nor does single vs dual processors, etc. Several people have opened trouble tickets with digium, but seems all have gone into a black hole (thus far). ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] TDM-400P Sound Quality issues
Pure guess... you're probably bumping into some of the same issues that many of us TDM users are hitting. Seems like either an interrupt handling (latency) or pci bus issue. You'll find hundreds of postings relative to this over the last six months or so. Not everyone has problems with the TDM, but some have found that swapping motherboards does clear up the issue. I did a bunch of searching through the list, found lots of messages regarding misc. TDM400p problems, but none that sounded like the issue I'm seeing. Can anyone point me to any discussions regarding this? The thing that I find so odd about it is that the sound quality only degrades on the zap channel when I'm connecting from a *remote* SIP client, but on local network the zap channel sounds fine (see description below). I'm willing to get a different MB if that's really the fix, but I'd hate to go through the work and $$ to make that happen only to find that the problem doesn't go away... Paul - Original Message - From: Rich Adamson [EMAIL PROTECTED] To: Asterisk Users Mailing List - Non-Commercial Discussion asterisk-users@lists.digium.com Sent: Sunday, February 13, 2005 9:12 PM Subject: Re: [Asterisk-Users] TDM-400P Sound Quality issues I spent a bunch of time troubleshooting the SIP end of things, thinking that's where the problem was, until I realized that every other SIP connection I make (from remote) yields a high quality call. ie. I can dial another SIP client and maintain high quality audio. Additionally, I can dial an extension that not only SIP connects to my server, but from there goes out an IAX2 connection to another remote Asterisk server, from there to another SIP client, and the audio quality is excellent. Therefore, I don't think the audio issue I'm experiencing is on the SIP end. Are there some wierd SIP - ZAP timing / conversion / other issues that could be causing this? thoughts? Pure guess... you're probably bumping into some of the same issues that many of us TDM users are hitting. Seems like either an interrupt handling (latency) or pci bus issue. You'll find hundreds of postings relative to this over the last six months or so. Not everyone has problems with the TDM, but some have found that swapping motherboards does clear up the issue. Processor speed and ram have nothing to do with it, nor does single vs dual processors, etc. Several people have opened trouble tickets with digium, but seems all have gone into a black hole (thus far). ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
