[asterisk-users] When to use Echo Cancellation cards?

[Lacy Moore - Aspendora]

We're not running echo cancelling cards here.  We may have 1 or 2
phone calls a month with echo, and it's primarily calls to a certain
number.  When asked about the echo, I explained the difference in
price, and for the price difference, we can deal with the echos.

For the most part, for us, either software echo cancelling seems to be
working or we don't have any echo to begin with.

The only time I have personally ever noticed the echo is at the
beginning of a conversation, and after about 10 seconds into it, it's
gone.  I assume that's software echo cancelling going to work.

One more bit of info.  When calling the number that gives us problems,
the receptionist is fine, when the call is transferred is when echo
shows up.  That seems to be an issue on their end.

But, my point is that you don't always need hardware echo cancelling.
Our faxes work inbound and outbound perfectly.  Not having hardware
echo cancelling, I'm sure, has a lot to do with that.