GVoice account to clarify is a voice over the internet protocol so it works just like any VOIP recieving calls nromally and making calls normally with no problem. GV will be using the Verizon's 3G internet connection which bypasses Verizon's calling network. I don't have any secret person working at Verizon, its an unadvertised plan. 49.99 unlimited data for any smartphones, they wil tell you at first that you have to get a voice plan, the rep i spoke to didnt even know about it, but upon further research they found it and that is all you need since GV comes with free texting too. Also GV yes duz support calls it will ring on your phone as normal same with texts you will them normally that is how good GV is. My location is the metropolitan area, but i went directly to Verizon not an authorized dealer the actual official Verizon wireless. The GV takes over every call and text yes. hope this helps
I understand VoIP, as I'm a Cisco VoIP engineer, but in all the documents/videos I've seen/read, the GV has "VoIP-like features" but is not a full "VoIP solution". In every case that "I've seen", the GV client hands off the call to the cell phone:
Making calls : Calls - Google Voice Help
Calls: Making calls
Because Google Voice doesn’t replace your existing phone lines, you can continue making calls directly from your existing phone services. But, you may also want to place calls that display your Google number on caller ID. There are several ways to do this
...however if you can receive the calls via the web interface, then great. Its stated that you can make calls by 1st dialing in to voice mail, then choosing option to "make a call", and also initiate a call via web interface, but in each case, GV requires a "call back number".
I'm just not seeing where it would maintain the session if it received one. If I had the phone I'd just do it myself, but if you can let me know which interface you use to receive a call on the cell, without voice service, let me know. I had resigned myself to trying to get Vonage working via SIP client.
edit - I was logged in to my GVoice web account, turned off "Forwarding" and called GV number from land line. I did not see the call coming thru via web. The call widget only allows "Forward all to VM" or "ring alternate #".