I have a Adtran Atlas 750 channel bank with 8 FXO and 16 FXS. This connects via T1 port on Atlas to T1 port on Asterisk Server. If I put a T1 echo canceller like the one in the link below, would that clean up my VoIP to FXO calls? http://www.bhumika.ca/telecom/echo_canceller/t1_echo_canceller.html Wade Dicks, CTO Vice President of Technology Transaeris, Inc. 2120 S. Roosevelt Suite 6 Joplin, MO 64804 417.206.9722 <http://www.fastfreeedom.net/> http://www.fastfreeedom.net -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20030220/227d64b8/attachment.html>
I don't know the answer, but if you decide to try it, and it works for you, please let me know! I've been having a terrible echo problem with an Adtran 750 and IAX calls for months now! Thanks, -BAK On Thu, 2003-02-20 at 17:13, Wade Dicks wrote:> I have a Adtran Atlas 750 channel bank with 8 FXO and 16 FXS. This > connects via T1 port on Atlas to T1 port on Asterisk Server. If I put > a T1 echo canceller like the one in the link below, would that clean > up my VoIP to FXO calls? > > > > http://www.bhumika.ca/telecom/echo_canceller/t1_echo_canceller.html > > > > Wade Dicks, CTO > > Vice President of Technology > > Transaeris, Inc. > > 2120 S. Roosevelt Suite 6 > > Joplin, MO 64804 > > 417.206.9722 > > http://www.fastfreeedom.net > > > >-------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20030221/555b21ac/attachment-0001.pgp>
> I have a Adtran Atlas 750 channel bank with 8 FXO and 16 FXS. This > connects via T1 port on Atlas to T1 port on Asterisk Server. If I put a > T1 echo canceller like the one in the link below, would that clean up my > VoIP to FXO calls?I'm not familiar with that brand, but that's the right idea. Are you still having trouble with echo, even with the AGRESSIVE_SUPPRESSOR option in the zaptel Makefile? Mark
I have had a bad experience with Asterisk and a Carrier's channel bank. The carrier brought in a PRI (data/voice integrated), the data and voice channels are split from the channel bank. I connected Asterisk to the channel bank via T1 cross cable with a Digium T205. On many calls users hear themselves on the phone during inbound or outbound calls. I have even tried MG2 echo canceller and no relief. I believe a hardware solution might be the way to go. Does anyone have a suggestion of a cheap used or refurbished echo canceller I could use? Michael
Michael Araba wrote:> I believe a hardware solution might be the way to go. Does anyone have a > suggestion of a cheap used or refurbished echo canceller I could use? > >http://www.voip-info.org/wiki/view/Tellabs+Hardware+Echo+Cancellers Doug -- Ben Franklin quote: "Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety."
Thanks for the corrections. What would I call a unit that accepts a PRI connection with a 10-channel PRI and an Ethernet output? I am looking into the Tellabs echo canceller now. Digium's echo canceller offering is not suitable for my 1 PRI project because it is probative cost wise. -Michael On Sep 5, 2006, at 11:56 AM, Michael Araba wrote:> I have had a bad experience with Asterisk and a Carrier's channel> bank.>> The carrier brought in a PRI (data/voice integrated), the data and> voice channels are split from the channel bank. I connected Asterisk> to the channel bank via T1 cross cable with a Digium T205.Sorry to nitpick but a PRI is NOT a data/voice integrated T1. A PRI is a T1 with one channel (normally the last) used for call signalling. If the T1 from the carrier is split into two pieces (data & voice) at your office and the hand off to Asterisk is a T1 then it is not a channel bank. A channel bank splits a T1 into 1-24 DS0 voice channels. If your interface with Asterisk is a T1 you should probably look at getting one of the newer Digium cards with the add- on hardware echo canceller. -Matt -- Matthew S. Crocker Vice President Crocker Communications, Inc. Internet Division PO BOX 710 Greenfield, MA 01302-0710 http://www.crocker.com <http://www.crocker.com/> -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20060905/1f19ef42/attachment.htm