Sec. 52.101  General definitions.

    As used in this part:
    (a) Number Administration and Service Center (``NASC''). The entity 
that provides user support for the Service Management System database 
and administers the Service Management System database on a day-to-day 
basis.
    (b) Responsible Organization (``RespOrg''). The entity chosen by a 
toll free subscriber to manage and administer the appropriate records in 
the toll free Service Management System for the toll free subscriber.
    (c) Service Control Points. The regional databases in the toll free 
network.
    (d) Service Management System Database (``SMS Database''). The 
administrative database system for toll free numbers. The Service 
Management System is a computer system that enables Responsible 
Organizations to enter and amend the data about toll free numbers within 
their control. The Service Management System shares this information 
with the Service Control Points. The entire system is the SMS database.
    (e) Toll Free Subscriber. The entity that requests a Responsible 
Organization to reserve a toll free number from the SMS database.
    (f) Toll Free Number. A telephone number for which the toll charges 
for completed calls are paid by the toll free subscriber. The toll free 
subscriber's specific geographic location has no bearing on what toll 
free number it can obtain from the SMS database.