According to the Flashphone blog, "For example, if someone is online in Gtalk and you want to call him from flashphone you just need to enter SIP URI like sip:google_usernam[email protected] and gtalk user will see incoming call. You also can easily call to flashphone from gtalk via gtalk2voip, add contact like [flashphone_login][email protected] and call to this contact, flashphone will ring if user online."
Pretty sweet!
image of Flashphone during one of my tests:
