[citation needed] Gizmo Project was founded by Michael Robertson and his company SIPphone.
CallOut was available at a fee, whereas CallIn and calls to other VoIP users were generally free of cost.
[citation needed] Gizmo5 supported the following Codecs: Version 4.0 of the Gizmo5 softphone offered video calls.
As of July 20, 2009, Gizmo5 was the only SIP service that could be used with Google Voice directly (without requiring a U.S. based phone number).
[citation needed] On August 26, 2010, Gmail accounts with Google voice were given a function to make and receive calls.
Google Voice product manager, Vincent Paquet, confirmed that this function was added through the help of the technology received after the Gizmo5 acquisition.
There was no indication made if the service would be revived in another form, or if there would be similar functionality added to any of Google's current telephony offerings.