• _{narrow band digital services}
  • _{no modems necessary}
  • _{a CSU/DSU (customer service unit/data service unit) is used}
  • _{keep in mind this is a service offered by a phone company}
  • _{you purchase a line speed (usually up to 56k)}
• _{broad band digital services}
  • _{you purchase this service also}
  • _{it is higher capacity than narrow band (example would be 1.544 Mbs)}