An individual or organization, including a service vendor, that is provided a telecommunications service for which a priority level has been requested or assigned.

is a number from one to five where one has the highest priority for ETS (Legacy GETS, WPS, or NGN-PS) services and five has the lowest priority for ETS (Legacy GETS, WPS, or NGN-PS) services. The Service User’s priority level is assigned to a Service User.

The term number portability means the ability of users of telecommunications services to retain, at the same location, existing telecommunications numbers without impairment of quality, reliability, or convenience when switching from one telecommunications carrier to another (47 CFR§
5
2. 21 (m)).

Services Discovery is the process by which an ITF receives the necessary data elements which enable the ITF to access the available IPTV Services.

Information that identifies the local serving area where the network provider operates. [After T1.667-1999]

The simultaneous participation of a plurality of devices or networks in supporting a session as well as merging two or more existing sessions into a single session.

An encryption key that provides privacy during a call and may be changed dynamically by the system. [T
1. Rpt22-1993]

See Open Systems Interconnection--Reference Model.

1. A finite or infinite number of objects, entities, or concepts, that have a given property or properties in common.
2. To configure all or part of a device into a specified state.

Abbreviation for secure electronic transaction.