任何ATA(包括OBi110)都可以用来中美互打电话

As long as both your relatives in China and you (in US) are using the same service provider, you can call each other free.

For example, you can sign up a free account with CallCentric, which allows free member to member call.  It doesn't matter where is your physical location, which could be in USA, China, or Europe, etc.

Certainly you can also do that without ATA.  However, you would need a soft phone on PC to make or receive calls in this case.

所有跟帖： 

• 理论如此，但中国某些地方会BLOCK端口，或有其他接入问题。 -docpost- ♂ (291 bytes) () 03/18/2011 postreply 11:07:30

• If it's issue due to blocked ports or Router setup, changing to -beHappyLOL- ♀ (469 bytes) () 03/18/2011 postreply 15:39:34

• 换到Nonoh，Rynga试试 -chat092- ♂ (0 bytes) () 03/19/2011 postreply 07:48:18