See my other post. I had the exact same problem on about 5 lines. I got a tellabs ec a while back, and then a power supply but hadn't the time to solder it up and get things going...I had just been forwarding the inbound calls to voicepulse connect.
I finally did get it soldered and ready, and when I installed the new hardware tellabs ec, echo was gone. I must have spent 10-20 hours on this problem, and the tellabs solved it in 5 minutes (once setting the channel properties to FXO-LS & FXS-LS) I think it cost something like $110 for the card, and $86 for the power supply. Then you need the time to do the soldering. In my case, being far from the CO, I found no other solution than the hardware EC. You do need some soldering experience though, because you don't want to lift pads off the board(something I had fun with dealing with SMD's and such). I can say though, that the resulting quality of the line is so decent, I am highly considering using the POTS for outgoing instead of iax connections to ITSP's (because I don't like latency). It really is an impressive difference. If you have 13 lines, I am surprised you are using a channel bank (if they are pots lines). Wouldn't it be more cost effective to use a T1 from your CO? Ztmonitor or a good tool, but in my experience just not enough when you are on a distant loop. I went through milliwatt tests like crazy trying to tweak gains, with little luck. In the end, the $200 or so I spent on hardware was totally worth it... If you are not interested in doing the soldering, you can probably find someone on the list who can supply you with a working EC setup.... You're welcome to call me if you want to discuss what I went through... Office: 1-914-591-2211 Mobile: 1-914-582-9110 Regards, Greg -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Doug Lytle Sent: Thursday, January 12, 2006 11:25 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: [Asterisk-Users] Adit 600 and echo I'm having issues with echo. My setup is Polycom IP501 phones connected to an Adit 600 via T100P. 13 Lines going to the Adit. All echo so far is on the local side (Employees hears own voice, but only on some calls). Watching the channel with ztmonitor, I notice that TXGAIN is pegged out most of the time. RXGAIN is anywhere between 45 and 60%. Is it safe to assume that playing around with the TX/RX gains on the channel bank will not do anything and this needs to be resolved via the TX gains within Asterisk? I was able to set the TXGAIN to -6.3 and it did help some, but if I try -6.4 or more on any of the channels, I can no longer here audio when calling into the facility. Any suggestions? Doug _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
