20:10:28:05Classification of telecommunications plant -- General.

Telecommunications plant, in general, is segregated into two broad classifications as follows: (1) Interexchange, which is plant used primarily to furnish toll service, includes the following plant types: (a) Operator systems; (b) Switching plant; (c) Trunk transmission equipment; (2) Exchange, which is plant used primarily to furnish all other services, includes the following plant types: (a) Operator systems; (b) Switching plant; (c) Trunk equipment; (d) Subscriber plant, which is composed of lines to the subscriber.

Source: 19 SDR 111, effective January 31, 1993.