Has anyone had any issues with background noise while using a TDM400 card? If so, what things did you tweak to resolve the issue? My * server has a single TDM400 card (2 ports enabled) with two X100P cards. Any feedback would be greatly appreciated.
<bottom response = on> On Thu, 2003-08-21 at 15:17, jeff.gunther@intalgent.com wrote:> > > Has anyone had any issues with background noise while using a TDM400 card? > If so, what things did you tweak to resolve the issue? My * server has a > single TDM400 card (2 ports enabled) with two X100P cards. > > Any feedback would be greatly appreciated.Jeff, Yes. How powerful is the power supply in your computer? How old? We had the problem in some Compaq Proliant PII 233s w/ 240 watt supplies but not in more recent hardware. This is a known problem to digium and the next batch of TDM400 cards are supposed to fix the problem in mid to late September. Howard White
Search the archives for some more information. I think this has been covered before and Digium had a replacement offer going for a while. If your complaint is a hissing or humming noise it has already been discovered that the TDM400 card has not been properly isolated from the PC power supply electrically. You may notice (as I do with one of my PCs) that the background noise in one ear cycles in the same cadence of the fan in the PC power supply. Switching PCs (a luxury I had and you may not) did make a difference with a different MOBO and power supply. -----Original Message----- From: jeff.gunther@intalgent.com [mailto:jeff.gunther@intalgent.com] Sent: Thursday, August 21, 2003 03:18 To: asterisk-users@lists.digium.com Subject: [Asterisk-Users] Background Noise Has anyone had any issues with background noise while using a TDM400 card? If so, what things did you tweak to resolve the issue? My * server has a single TDM400 card (2 ports enabled) with two X100P cards. Any feedback would be greatly appreciated. _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20030821/1b0fb9c3/attachment.htm
Hi Howard, My * server has a brand new 350 watt power supply. After your message, I did confirm with Digium that the next batch of TDM400 cards is supposed to resolve the issue. Thank you for all your assistace. Jeff Gunther asterisk-users-admin@lists.digium.com wrote on 08/21/2003 04:20:16 PM:> <bottom response = on> > > On Thu, 2003-08-21 at 15:17, jeff.gunther@intalgent.com wrote: > > > > > > Has anyone had any issues with background noise while using a TDM400card?> > If so, what things did you tweak to resolve the issue? My * server hasa> > single TDM400 card (2 ports enabled) with two X100P cards. > > > > Any feedback would be greatly appreciated. > > Jeff, > > Yes. How powerful is the power supply in your computer? How old? > > We had the problem in some Compaq Proliant PII 233s w/ 240 watt supplies > but not in more recent hardware. This is a known problem to digium and > the next batch of TDM400 cards are supposed to fix the problem in mid to > late September. > > Howard White > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users
Hi All i have some background noise problem with * and a diva srv 4bri + chan_capi 0.3.0 + X-Ten PRO on my pc. Both in incoming and outgoing call have a background noise. there is some tuning to do? where can i find documentation about capi.conf? which is the best codec for sip (ulaw, alaw, gsm...)? mark
Just to add some info from recent experience. May help, May not 1 X100P 2 X 4 port TDM400P Had to hook a dial-in palm PDA base for a custom software implementation to my * system and have the modem dial out and work properly. Phone connects to second port on PDA Base Experienced very bad "electrical" type noise on the line, hum, buzz, fad in and out. would come and go. Switched ports, wires, rxgain and txgain changes, phone changes, nothing helped the PDA base is also connected via serial port (or USB did not matter) to desktop computer for sync purposes Through trial and error. Found noise coming from connection to desk top computer. On, Off did not matter. Resolution. The power strip surge protector I was using on the desktop computer has two modes for noise filtration built in. 75 Hertz (or something, don;t remember) and 50 Hertz. I moved the plug for the desktop from the 75 side to the 50 side, All noise on line now gone. Not sure if this helps, constant noise on all sides may be power and noise filtration related... --- "markbalester@libero.it" <markbalester@libero.it> wrote:> Hi All > i have some background noise problem with * and a > diva srv 4bri + chan_capi 0.3.0 + X-Ten PRO on my > pc. > Both in incoming and outgoing call have a background > noise. > > there is some tuning to do? > where can i find documentation about capi.conf? > which is the best codec for sip (ulaw, alaw, > gsm...)? > > mark > > _______________________________________________ > 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 __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! http://webhosting.yahoo.com/ps/sb/