[VoIP] Question about Asterisk & VM

[Nathan Watson]

Hello,

I would like to know if anyone has set up Asterisk in conjunction with
CO-based voicemail such that Asterisk would see and interpret FSK
tones from the CO and then activate the VM indicator at selected
Asterisk-connected extensions. I already see that this can create a
disjointed and tedious situation (i.e. how does one deactivate the
*-based VM indicator once the CO voicemail is retrieved? ...), but I'm
interested if anyone has attempted anything like this. Before even
entertaining this idea, I need to ask if any FXO products even exist
to interpret FSK tones in the first place.

Thank you,

Nathan