以下内容仅供测试研究。
Step 1:
Apply one Google Voice account, e.g. one free US phone number. You should use the proxy to access Google Voice, it will spend several days.
For the China subscriber, refer to: http://google.org.cn/2009/07/15/how-to-signup-google-voice-in-china-mainland/
Step 2:
Apply one Gizmo5 account, e.g. one SIP Phone number, one user name and password. It will be taken affect immediately, but a slug of network is from China.
Refer to: http://www.jrin.net/2009_07_26/use-gizmo5-for-free-calls-with-google-voice
Step 3:
Make a connection between Google Voice and Gizmo5 accounts.
Refer to: http://www.jrin.net/2009_07_26/use-gizmo5-for-free-calls-with-google-voice
Created 2009/07/23
关注google voice一段时间了，昨天终于注册成功，号码是(518) 594-1818。
参考下面的文章：国内注册 Google Voice 的方法
考虑到www.virtualphoneline.com的号码只有24天试用期，从ipkall.com重新注册了个号码，免费而且无期限:-)
各位TX谁要是也申请了，可以给偶语音留言。持续关注……
Updated 2009/07/28
从谷奥那里获知通过Gizmo5和Google Voice一起使用可以完整的打入和打出电话，根据网上的资料操作成功，呼叫时间未测试。
参考下面的文章：
最初的消息来源：Gizmo5+Google Voice=GizmoVoice
实施的详细资料：Use Gizmo5 for free calls with Google Voice