I use VoipDiscount for all my outgoing calls and up till now have used
VoipTalk for my incoming calls. The settings in my Linksys ATA are such that
it registers with VoipTalk but not with VoipDiscount.

VoipDiscount have just started providing incoming numbers but obviously if I
want to use it I will have to change the settings so that my ATA registers
with VoipDiscount (I could then dispense with VoipTalk)

I have a notebook computer that has the VoipDiscount soft phone on for when
I am out and about.

Could both the ATA and the notebook be registered at the same time with
VoipDiscount or is only one at once allowed. If both can register which one
(or would both) ring?

TIA