Subscriber: In a public switched telecommunications network, the ultimate user, i.e., customer, of a communications service.
Note 1: Subscribers include individuals, activities, organizations, etc.
Note 2: Subscribers use end instruments, such as telephones, modems, facsimile machines, computers, and remote terminals, that are connected to a central office.
Note 3: Subscribers are usually subject to tariff.
Note 4: Subscribers do not include communications systems operating personnel except for their personal terminals.
Source: from Federal Standard 1037C
