Has any person attempted sucessfully to port an AT&T landline phone number away to VOIP without losing DSL service I know DSL is linked to phone number and in one attempt to call AT&T CSR they tried to sell me another landline for $200 for my dsl service to go with my other landline I have. OK when my phone number ports away my present landline will be disconnected and I will have 2 phone lines to my house. should I just order comcast internet and forget AT&T DSL because this is making my Head hurt!