Grandstream GXV-3140

I just bought Grandstream GXV-3140 and i have recently subscribed to Axvoice (a voip service). The problem is that i am using the VoIP ATA device that came with the subscription to this service. Now, i don't know if i can use the phone with the ATA or not. Anyone? Any help would be really appreciated.

Cheers,

rafazmichael