1. A character string which uniquely identifies a user to a system [CESG]. See also: Password.
2. See user ID.

A standard device or functionality providing secure procedures in support of registration, authentication, and privacy for wireless access to PCS, and which may also be used to facilitate other services (e.g., UPT, banking). [After T
1. Rpt44-1995]

Information transferred across the functional interface between a source user and a telecommunications system for delivery to a destination user.
Note: In telecommunications systems, user information includes user overhead information.

A bit transferred from a source user to a telecommunications system for delivery to a destination user.
Note 1: User information bits do not include the overhead bits originated by, or having their primary functional effect within, the telecommunications system.
Note 2: User information bits are encoded to form channel bits.

A block that contains at least one user information bit.

The convergence of a full range of user interface types, including fixed terminals, mobile handsets or other user devices and interfaces.

Synonym loop.

See overhead information.

A functional part of the common channel signaling system that transfers signaling messages via the message transfer part. Different types of user parts exist (e.g., for telephone and data services), each of which is specified to a particular use of the signaling system. [T1.110-1987]

Protection of information about users from uninvited and possibly illegal access. [T
1. Rpt34-1994]