[Asterisk-Users] Dynamically disabling echo cancellation (Zap).

[Ken D'Ambrosio]

Hi!  For reasons that I won't bore people with, I'd like to disable echo
cancellation on-the-fly, depending on which DID a call came in on.  I've
seen things like spandsp disable EC for faxes, so I know it's possible. 
Any idea where to start looking?  (I assume I'll have to make a helper
application of some sort to be called externally, and that's fine.)

Thanks!

-Ken

P.S.  If this question is more appropriate for a developer's list, please
let me know.