As u know , u can use PBXes + BlackVoib + browser for making free call .But ,free PBXes have a limit 2000 mins/month for Inbound call ,sometime u may lose connect when talking because of time up
Now , Gizmo5 open register , Unlimited free Voip call is coming
First , u need download Gizmo5 [Only registered and activated users can see links. ] .After setting up on your PC , run it choice "register a new acc name" then login Gizmo5 client (Gizmo5.exe) for waiting verify SIP number
[Only registered and activated users can see links. ] get your SIP number
now go to google voice verify Gizmo5 SIP number
] config BlackVoib client
] ok
go to Google voice ([Only registered and activated users can see links. ]) make a call
] ]
p/s:when u make call ,don't forget sign out your acc on Gizmo5.exe