2012 in the Android mobile phone for free to fight the United States

Required materials:
Google Voice +Gizmo5 account
+SipDroid +AndroidMobile phone
+ WiFi/3G
The use of principle :
Answer: the other call your GV
number - > transfer to the
binding of the SIP account –
>SipDroid began to answer
Call: mobile phone webpage /
program initiates the call request
- > GV center back and forwards
to the SIP Network - >
– >SipDroid began answering - >
wait for each other to connect - >
start talking
Operation steps:
The 1 has a GoogleVoice account
2 GoogleVoice bind to a SIP
account number (currently only
supports Gizmo5) to receive an
incoming call
3Install SipDroid And use the
account login SipDroid and
maintain online (already can
answer any call)
4 open the webpage in mobile
phone voice.google.com, click
Contacts, search contacts, Call
5 wait a moment, SipDroid will
receive a VoIP call, answer will
hear ringing
6 wait for each other to get
through, you can enjoy free talk
Be careful :
1 this way can avoid high
international call costs, all calls
to all go Internet, must have WiFi
or 3G access.
2 Gizmo5 was acquired by
Google and GoogleVoice, is the
depth of integration, suspension
of registration and charge.
3.Android GV applications can
send and receive text messages,
Voicemail, but call or by ordinary
telephone switching,
If in China, it is not feasible, so it
must depend on the webpage to
initiate a call.
4 Android Gizmo5
client GuavaAlso can rise to
replace SipDroid role.