Just a point of reference for others, we had a lot of echo on an Adtran Channel Bank connected to a T100P.<br>
The end poitns were all Polycom Ip500's on a local lan connecting to *.<br>
<br>
We couldn't solve the echo with any software settings and installed a
Tellabs Echo Can shelf 255D i believe with 64ms echo cans, that
resolved the problem completely.<br>
<br>
No more yelling from the secretaries :)<br>
<br>
I'm happy.<br>
<br>