Everything is working very well, and for the most part, phone calls clear and of good quality. But every so often a call exhibits a lot of echo. It seems that certain destination numbers are more susceptible than others to this problem. The echo isn't consistent throughout the call, but varies.
I've tried various tweaks to gain, and I guess I could do a little more, but it is hard to reproduce the problem every time to see if changes help. Is there a more methodical way to do this?
My other question (and a more important one) is: will moving to ISDN or a different FXO card help? Does ISDN have echo problems at all, or because it is all digital, is this problem completely gone? We are thinking of installing Asterisk for our customers, but they will not be as tolerant of a little echo as we are. So should we mandate ISDN as the best approach?
Otherwise, are other FXO cards better at echo cancellation or is this a software feature built into the driver?
Thanks Ari Maniatis --------------------------> ish http://www.ish.com.au Level 1, 30 Wilson Street Newtown 2042 Australia phone +61 2 9550 5001 fax +61 2 9550 4001 GPG fingerprint CBFB 84B4 738D 4E87 5E5C 5EFA EF6A 7D2E 3E49 102A
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