You can have echo even w/ PRI's, it's just that the echo isn't INTRODUCED at the PRI demarcation point, it is INTRODUCED somewhere along the call path, usually where the 4 wire digital signal to 2 wire analogue signal conversion point exist. We found that moving to a Compaq DL380 or 6400R and compiling in a few extra options (see one of my previous post) totally abolished our echo problem.
W. Kevin Hunt CCIE #11841 MCSE, Linux+ SME www.huntbrothers.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ryan Thrash Sent: Tuesday, July 20, 2004 8:13 AM To: [EMAIL PROTECTED] Subject: Re: [Asterisk-Users] Echo on a PRI > I recently set up the following in a production system (2.8 GHZ Xeon, > 1 Gig > Memory, Dell 2650). > > Telco - PRI - Asterisk - T1 - PBX > > I am getting an occasional noticeable echo on some of the phone lines > (random inbound and outbound). Everyone I ask keeps telling me that I > can't be having echo since I am on a PRI, which is a digital circuit. > Ok, so I can't be having echo, but I am! Does anyone have any ideas > of what might be causing the echo in this situation? Welcome to the club. ;) You have the same exact problem I've got. The only difference is I'm using dual Xeon 2.4s and a Supermicro SuperWorkstation 7033A-T (X5DAL-TG2 motherboard http://supermicro.com/products/motherboard/Xeon/E7505/X5DAL-TG2.cfm ). Echo training=800 on a recent CVS helped, but did not totally resolve the issue. Best regards, Ryan Thrash _______________________________________________ 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 _______________________________________________ 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
