We have IVM working with Axon and a few SPA-3000 FXO adapters.
The problem we've been having lately is related to an SPA-3000 issue. The SPA-3000 issue (which I didn't find out about until _after_ we bought IVM and the SPA hardware) is that they are prone to sending out random DTMF signals during calls.
What happens with respect to IVM is that while a person is leaving a message, IVM detects that they're pressing "1" and then erases everything the person has said since they hit 1, unbeknownst to the caller.
For me, short of replacing the entire phone system with something like Asterisk, my solutions are very limited.
I can set the DTMF recognition to Inband on the SPA. Result: IVM doesn't recognize the DTMF sounds so that's an obvious no-go.
Option 2 is to be able to disable extraneous DTMF signals or adjust sensitivity of the DTMF detection. Unfortunately, IVM doesn't really allow me to do either.
These problems make our phone system seem like a Mickey Mouse organization to our clients, and I'm spending way more time than I should tweaking the phone system (makes us regret not buying a Nortel or Avaya solution that cost ten times as much as what we paid for the current setup).
Does anyone know of any workarounds?
