记得Google Voice里有个地方。。。

可以设置成显示来电号码或自己GV号码。自己去GV找一下

Caller line identification

As a call forwarding service, Google Voice also forwards the caller line identification (CLID or caller ID) of incoming calls to the user's telephone service. A user can choose whether to display a caller's CLID, or their Google Voice number, when receiving calls via the service.