[Asterisk-biz] Bottom line on echo cancellation for Digium and Sangoma cards

[smbPBX]

Hello all:

Over the past few months, Digium has introduced "echo cancellation" features
in Digium TE406 and TE411 and echo cancellation with second generation
firmware upgrades for TE205, TE210, TE405 and TE410.

To confuse me further, their latest TDM2400 has two types - E is with echo
cancellation and B is without.

So where does this leave TE110P and TDM400P? I have read much about echo
problems with Digium cards.
So, with echo cancellation, are TE110P and TDM400P unsuitable for business
applications? Even more confusing to me to introduce the latest TDM2400 with
and without echo cancellation. Again, is the one without echo cancellation
unsuitable for business applications?

Now, moving on to Sangoma. I was always led to believe that Sangoma cards
were much better at echo cancellation than Digium.
Until...I read their announcment of A104D with hardware echo cancellation.
So does this make A104U as well as A102U and A101U unsuitable for business
applications?

Can someone please help me straighten out my thinking? I am more
specifically concerned about smaller office deployments with TDM400P and
TE110P and A101U: Are they no good? And, is it better to use multi-port
gateways such as Mediatrix instead of TDM400P and TE1110 or A101U?

So, what is the bottom line on echo cancellation with these cards?

--
Regards,

smbPBX
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-biz/attachments/20051116/b4a0bf08/attachment.htm