[Asterisk-biz] PRI Hardware Echo Canceller

[Kevin P. Fleming]

Patrick wrote:

> Thanks for the info. Interesting stuff. One question. Iirc most telco
> equipment does EC with a tail length of 128, 64 or 32ms. Is there any
> particular reason why the TE4xxP uses 16ms and not a higher value?

The parts on the board have a limit of 16ms at 120 channels; with a 
smaller channel load, the echo tail can be selected to be 32ms or 64ms, 
I believe (I don't know if that has been exposed in the wct4xxp driver 
yet, though).