I m facing problem with TDM2400P pstn card. When someone dials, the voice quality is crappy....Instead of hearing. Echo cancel almost works, but the callee hear what they describe as a 'background crackle/buzz' coming back when they talk. I tried with rxgain & txgain tuning but ....... no effect. Anyone have idea, what to do for the better sound quality. Shariq -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20080825/af0ba004/attachment.htm
You could try http://www.octasic.com/en/octware/softecho.php Regards, -- --[ UxBoD ]-- // PGP Key: "curl -s http://www.splatnix.net/uxbod.asc | gpg --import" // Fingerprint: F57A 0CBD DD19 79E9 1FCC A612 CB36 D89D 2C5A 3A84 // Keyserver: www.keyserver.net Key-ID: 0x2C5A3A84 // Phone: +44 845 869 2749 SIP Phone: uxbod at sip.splatnix.net ----- "Shariq Khan" <shariqrazakhan at gmail.com> wrote:> I m facing problem with TDM2400P pstn card. When someone dials, the > voice quality is crappy....Instead of hearing. > > Echo cancel almost works, but the callee hear what they describe as a > 'background crackle/buzz' coming back when they talk. > > I tried with rxgain & txgain tuning but ....... no effect. > > Anyone have idea, what to do for the better sound quality. > > Shariq-- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
Hi Shariq -> I m facing problem with TDM2400P pstn card. When someone dials, the voice > quality is crappy....Instead of hearing. > > Echo cancel almost works, but the callee hear what they describe as a > 'background crackle/buzz' coming back when they talk.Crackling noise is usually caused by an unbalanced hybrid or a shared IRQ. Have you used the fxotune tool? This is the first thing you should do with any analog card. If you still have issues after running fxotune, check to see if your card is sharing interrupts with anything else like a network card or disk controller. You can use "lspci -vv" or "cat /proc/interrupts" for this. - Noah
Shariq Khan wrote:> I m facing problem with TDM2400P pstn card. When someone dials, the > voice quality is crappy....Instead of hearing.Please contact Digium technical support for assistance with this problem. They are the experts when it comes to debugging these types of issues. This assistance is free when you are using Digium hardware. -- Russell Bryant Senior Software Engineer Open Source Team Lead Digium, Inc.
Thank u very much, Russel. I will definitely contact with digium, & then updates you. Shariq On Thu, Aug 28, 2008 at 5:27 PM, Russell Bryant <russell at digium.com> wrote:> Shariq Khan wrote: > > I m facing problem with TDM2400P pstn card. When someone dials, the > > voice quality is crappy....Instead of hearing. > > Please contact Digium technical support for assistance with this > problem. They are the experts when it comes to debugging these types of > issues. This assistance is free when you are using Digium hardware. > > -- > Russell Bryant > Senior Software Engineer > Open Source Team Lead > Digium, Inc. > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > AstriCon 2008 - September 22 - 25 Phoenix, Arizona > Register Now: http://www.astricon.net > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >-------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20080828/8a338345/attachment.htm