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For basic-rate access in an Integrated Services Digital Network (ISDN) environment, a user-to-network interface reference point that is characterized by the use of a 2-wire-loop transmission system that (a) conveys information between the 4-wire user-to-network interface, i.e., the S/T reference point, and the local exchange, (b) is located in the servicing central office, and (c) is not as distance sensitive as a service using a T interface.
Universal Description, Discovery, and Integration
1. User Equipment, 2. User Element.
Abbreviation for ultra high frequency. See electromagnetic spectrum.
Universal Integrated Circuit Card
unsigned integer, most significant bit first
Abbreviation for ultra low frequency. See electromagnetic spectrum.