...with respect to Google voice.
I would like to see a video regarding all the features that Obihai offers in a way that delineates it from the features that can be obtained using Google Voice alone.
For example, versus using VoIP directly with Google Voice. These might include
Number establishment and changability
Security
Your point to point features
(As examples)
I am not clear on whether GV permits adding a phone without an existing phone number, but via its MAC address.
The same might be said for other providers, but the Google example should prove insightful.