Glossary

Term	Main definition
UAR	Universal Asynchronous Receiver Hits - 819
UART	Universal Asynchronous Receiver / Transmitter Hits - 879
UBR	Unspecified Bit Rate Hits - 862
UCS	Universal Card Slot Hits - 870
UDP	Universal Distribution Panel; User Datagram Protocol Hits - 852
UDP/IP	User Datagram Protocol / Internet Protocol Hits - 736
UEP	Unequal Error Protection Hits - 887
UHF	Ultra High Frequency Hits - 868
UL	Underwriters Laboratories Hits - 874
ULSI	Ultra Large Scale Integration Hits - 886
UMS	Umbrella Management System Hits - 865
UMTS	Universal Mobile Telecommunications System (3G) Hits - 821
UNI	User Network Interface Hits - 855
UPS	Uninterruptible Power Supply Hits - 875
UPT	Universal Personal Telecommunications Hits - 814
UQM	Uplink Quality Monitor Hits - 867
URL	Universal Resource Locator Hits - 840
USB	Upper Sideband; Universal Serial Bus Hits - 826
USP	Universal Services Processor Hits - 861
UTOPIA	Universal Test and Operations Interface Hits - 801
UTP	Unshielded Twisted Pair Hits - 840