其实，删除PC上的VD后，好好睡一觉后就好了

正确的办法如下：

1) you need delete your Voipdiscount software on your PC. or just use different Voipdiscount acount for the PC and the ATA.

2) login to your ATA web, on info page you will see the register information, which should be registered. like following image.

if it is not registered, goto the Line 1 page or line 2 page click the "Submit All Changes" button 4 or 5 times, because usually just 1 click does not update. until you get the Registered information on INFO page.

Line 1 Status
Hook State:	On	Registration State:	Registered
Last Registration At:	1/31/2012 11:25:37	Next Registration In:	586 s
Message Waiting:	No	Call Back Active:	No