Well, looks like we had a similar issue. Replaced the Sangoma and it worked.
We have asked for a failure analysis from Sangoma on the defective card.
Dr. Michael J. Chudobiak wrote:
I've been having problems with my A20002D lately - callers from the
PSTN don't hear me when I answer, but I hear them. Disabling echo
cancellation in zapata.conf brings the audio (and echo) back. This
used to work fine, until two days ago.
Well, just to complete my own thread, this seems to be a probable
hardware defect and Sangoma is sending a replacement.
I had to live with software echo cancellation for a day or two -
shudder - it's amazing how much better the hardware echo cancellation is!
- Mike
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