I have a setup that means my 2Talk numbers terminate in two places - my laptop for when I'm mobile and a FreePBX install at home, so that we can use "normal" phones for making and receiving calls.
At home, we also use chan_mobile to connect the mobile phones to Asterisk to make and receive calls (The outbound routes are configured to use the mobile phones first before the 2talk lines) - and this is the reason that I don't just use 2Talks cloud solution.
What I would like to do is to use the Voicemail that comes with 2Talk, instead of the voicemail internal to FreePBX - but what I need to do is retrieve the voicemail information from 2Talk and pass it through to Asterisk.
I've tried both "mwi" and "unsolicited_mailbox" (from https://wiki.asterisk.org/wiki/display/AST/Message+Waiting+Indication), but haven't had any luck with either. I was reading through the debug information, but given I was doing this very late at night and not getting anywhere, I decided to put it down for a while and see if anyone in the GZ community had any experience with this.