Uniform Resource Locator

A character string describing the location and access method of a resource on the Internet.
Note: For example, the URL http://www. ycom. com describes the type of access method being used (http) and the server location which hosts the Web site (www. ycom. com).

Uniform Resource Name

See available line.

Synonym occupancy.

Universal Serial Bus

Synonym available line.

The name of a set of computers and networks used for creating, forwarding, or displaying some computer conferences. [2382-pt.35]

1. A person, organization, or other entity (including a computer or computer system), that employs the services provided by a telecommunication system, or by an information processing system, for transfer of information.
Note: A user functions as a source or final destination of user information, or both. Synonym subscriber.
2. [Insecurity, a] person or process authorized access to an IS… (Read More →)

An entity that carries out specific functions on behalf of its owner or user. Such functions usually entail requesting some service or responding to a request for service. When requesting service, the User Agent acts as a User Agent Client (UAC), and when responding to a request for service, it acts like a User Agent Server (UAS). For example, a… (Read More →)