said by Jose :My main question is: Does someone knows how to port a phone number without loosing the DSL service (and the e-mail address, and the content on the inbox of that e-mail address)? Cramer,do you know?
I outlined one method which should work, assuming the local service still offers legacy ADSL. The problem with that method is whether one can still order dry loop ADSL service from AT&T, or does AT&T only offer IPDSL. If AT&T only offers IPDSL, I don't know if it would work.
As for losing e-mail: In April, 2011, I switched voice and DSL to a local CLEC. I can still access the old '@pacbell.net' accounts. I lost neither e-mail accounts, nor the contents of those accounts.