RonR - thanks for the links. It looks like you don't see any way to prioritize the trunks in OBi device now.
I've made several test calls to my GV number, which is forwarding to SP1 (GV Talk) and SP2 (DID/SIP provider, registered with GV) and so far in all cases I took call from SP1. Perhaps it's because GV notifies SP1 first... That's actually the way I wanted it (so far).
It'd be nice to have a certainty here. For example, to set 1st priority to SP1 (or SP2), so if there are two calls coming at the same time - one always wins (even if call comes a second later) when I hook off the phone. I'm looking for some kind of configuration control setting...
May be it's just a wishful thinking here
. But, I'm sure, that with the Google Voice forwarding (group ringing) service the question will rise here again and again