Animated Telecom Dictionary
Use this dictionary for an understanding of the most recent telecom terms, definitions and acronyms, look at detailed animations, learn to search telecom databases, and more.
TABLE OF CONTENTS Animated Telecom Dictionary
U: U Law Encoding UWB
U Law Encoding
The type of non-linear digital voice coding (digital signal companding) that is commonly used in the Americas and other parts of the world. The U Law (pronounced Mu Law) coding process is used to compress the 13 bit sampling of a digitized audio signal into the equivalent of an 8 bit sample. It does this by assigning a non-binary (non-linear) value to each of the binary bits. Another non-linear voice coding system is the A Law coding system that is used in Europe and other parts of the world.
u See: , Mu
Occasional typographic substitute for Greek letter .
UAC
See: User Agent Client
UART
See: Universal Asynchronous Receiver And Transmitter
UAS
See: User Agent Server
UAT
See: User Acceptance Testing
UBR
See: Unspecified Bit Rate
UCD
Uniform Call Distribution
UCD
Upstream Channel Descriptor
UCH
See: User Channel
UDLC
Universal Data Link Control
UDLC
Universal Digital Loop Carrier
UDP
See: User Datagram Protocol
UE
See: User Equipment
UGS
Unsolicited Grant Service
UHCI
See: Universal Host Controller Interface
UHF
See: Ultra High Frequency
UI
Unnumbered Information
UL
Underwriters Laboratories
ULF
See: Ultra Low Frequency
Ultra High Frequency (UHF)
The frequency range from 300 MHz to 3000 MHz.
Ultra Low Frequency (ULF)
The frequency band from 300 Hz to 3000 Hz.
Ultrasonic
An acoustical signal of a frequency higher than can be heard by a human (above 20 kHz).
Ultraviolet
Electromagnetic waves invisible to the human...
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