I have an Obi110, newest software. Connected to the landline and internet (Google Voice).
All features are working, except receiving incoming calls from the landline. When calling the landline from a different phone (or someone else calling), the caller always gets a busy signal.
Calling out via the landline (# prefix) works fine.
I also receive landline calls correctly when bypassing the obi (i.e. connecting my home phone directly to the landline). Of course in this case GV no longer works (point of having the Obi).
I have noticed the problem only recently (when someone could not reach me). As best as I can tell this was working fine. I also have an Obi110 at a different location with the same setup, and it does receive landline calls as expected (in addition to GV).
Many thanks for any help I can get!