On 8/29/2005, "canuck15" <[EMAIL PROTECTED]> wrote: > > I have a couple SIP phones on a PIII 1Ghz 256MB * server with a TDM01B > connected to the PSTN. Calls between SIP phones are clear. Calls to > the PSTN are quite noisy. The other person does not hear noise but I > hear quite a bit. It is not an annoying sound but definitely much > noisier than typical PSTN or even cell phone calls. > > I believe I have a TDM400P REV H card. I definitely don't have any IRQ > issues. Everything not required is disabled in BIOS. Zaptel drivers > have been compiled with defaults and with MMX and other enhancements. > Have tried V 1.0.9.1 and current 1.2 beta1 software. Nothing changes. > Tried telco PSTN connection and VoIP provider connection via ATA which > both sound clear when connected directly to an analog phone. Nothing > changes. Tried adjusting RX/TX gain and echo cancellation in > zaptel.conf. Nothing changes. > > Does any one have any ideas? Could my FXO module be bad?
Sure - it could be - I would check it in another TDM400 slot on the card to make sure. Also - an outside chance - make sure Tip and Ring are correct. You could be getting ground loops - depends on the noise. Brett _______________________________________________ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
