1. Yes! You can port your number back to AT&T if you port it over to Sonic and decide you'd prefer to go back
2. Having both services running simultaneously will depend on how many pairs your house's wiring has available
3. AT&T will usually install a brand new NID for you during installation if one is not present. In some cases, I have seen direct drop to internal wiring setups and although they aren't common, they also are not unheard of
4. We should also find out if you are going to be getting Fusion X2 or Fusion FTTN X2, because the former is regular POTS and the latter is VoIP. If you want to send an e-mail to support@sonic.net with the subject line 'Attn Mike N' with the address you are looking to get service at, I'd be more than happy to take a look for you!
2. Having both services running simultaneously will depend on how many pairs your house's wiring has available
3. AT&T will usually install a brand new NID for you during installation if one is not present. In some cases, I have seen direct drop to internal wiring setups and although they aren't common, they also are not unheard of
4. We should also find out if you are going to be getting Fusion X2 or Fusion FTTN X2, because the former is regular POTS and the latter is VoIP. If you want to send an e-mail to support@sonic.net with the subject line 'Attn Mike N' with the address you are looking to get service at, I'd be more than happy to take a look for you!