An Internet Service Provider (ISP) is a company that provides internet to your home or business.

Though landlines are not so much in demand; but they are essential in some special situations. Whenever your phone gets switched off or gets lost, a landline will help you to connect with other people. The traditional cheap landline phone services don't cost as much as you think. The AT&T landline only gives unlimited talk time facility at $33.

Retaining the same landline number is dependent upon the services you have. If you have switched providers then you can retain the existing number wherever you move. Nowadays, most of the service providers provide a switch for cheap landline phone services. Google Voice can make your job simpler and easier.