I've been using an SPA-3000 for many years (with Exetel & before) with great sucess, and am now looking to add an extra incoming DID.
current set-up; no DID (original Exetel VOIP offering) linked through SPA3000 with normal PSTN (in other words, calls go out via voip, come in via std exetel PSTN using the one handset).
Can I add a second SPA3000 (or another ATA) and use the free DID that exetel offer, or can I only use the one ATA because it's the only one that can register?
The new incoming ATA/DID will be connected to a second handset only, thus totally separate.
I hope the above is clear!

Thanks,
Paul