On Friday 09 of September 2005 20:15, [EMAIL PROTECTED] wrote: > On Fri, 9 Sep 2005 [EMAIL PROTECTED] wrote: > > Could you have a cabling issue? Like one leg of the pair grounded? I'm > > not really a telco engineer but I have this vague idea that this can > > cause echo trouble? Can anyone confirm or deny? > > Ah yes, > http://www.voip-info.org/tiki-index.php?page=Asterisk+echo+analog+lines > talks about grounded legs of the call and bridge taps. > > I suspect you could also get the effect of a grounded leg if you only > actually have one side of the pair connected; a return path via ground may > be found to give you a very unbalanced connection. > > Your RJ11 cable could be wrong and on the wrong pins to result in just one > leg being connected. >
Until the cable wiring is totally different i don't think this should be the case. We use pins 2&3 in the RJ connector - and since all US equipment (like external modems) have been working well i assume the same wiring is used there. I'll check on monday whether the card does not ground one of the wires. If so, a small 1:1 transformer could be a solution. Marek _______________________________________________ --Bandwidth and Colocation sponsored by Easynews.com -- 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
