Stagg Shelton wrote:
It was Digium's opinion that perhaps the card had a VPM. We got a
replacement TE411P, I implemented it tonight and still the exact same
echo problem. At this point I feel like I can rule out failed hardware.
I contacted Digium support and now they are telling me it's something
with my carrier, and I should call them. I called Bellsouth, and they
ran a full stress test on the circuit taking me offline for about 30
minutes.
The end result is that the circuit test passed with no errors.
Bellsouth says it's not in their network, Digium says its not their
card, and I have a te411p with VPM disabled in the wct4xx kernel
module because something doesn't work the way it should. My customer
is wanting to know about sangoma cards with the echo cancellation, and
at this point I'm nervous to recommend any hardware. I'm going to
look into the sangoma that you suggested. Are there any other kinds
of products that I could look into either Passive or Active.
Thanks
Stagg Shelton
www.oneringnetworks.com
If you only need a single span, think about using a single span Digium
or Sangoma card without echo cancellation and then use an external
hardware echo canceller such as Tellabs or Orion Telecom. We have a
customer using a Sangoma A101 that had some lingering echo, so we
purchased the Orion Telecom "desktop" T1 echo canceller. That cleared
things up and we've had no complaints in the almost two weeks since it
has been installed. We've got another one on the way for a second site.
Mike Clark
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