Investigate where the phone companies equipment is placed, and find out what equipment they have there already. If you order specific business services (ie a type of contract with multiple lines, etc) they will be forced to upgrade all the equipment up to your nearest connection to their media. Like someone else noted, many of these types of things are tariffed or are requirements for providing service created by your local municipality. This equipment often is the same that would net you DSL. Unfortunately, this kind of thing isn't something your local telco will want people to know, so pinpointing what service to subscribe is a pain.
