Glossary

Term	Main definition
UAR	Universal Asynchronous Receiver Hits - 758
UART	Universal Asynchronous Receiver / Transmitter Hits - 823
UBR	Unspecified Bit Rate Hits - 805
UCS	Universal Card Slot Hits - 811
UDP	Universal Distribution Panel; User Datagram Protocol Hits - 789
UDP/IP	User Datagram Protocol / Internet Protocol Hits - 688
UEP	Unequal Error Protection Hits - 831
UHF	Ultra High Frequency Hits - 807
UL	Underwriters Laboratories Hits - 819
ULSI	Ultra Large Scale Integration Hits - 825
UMS	Umbrella Management System Hits - 810
UMTS	Universal Mobile Telecommunications System (3G) Hits - 769
UNI	User Network Interface Hits - 798
UPS	Uninterruptible Power Supply Hits - 815
UPT	Universal Personal Telecommunications Hits - 757
UQM	Uplink Quality Monitor Hits - 808
URL	Universal Resource Locator Hits - 779
USB	Upper Sideband; Universal Serial Bus Hits - 763
USP	Universal Services Processor Hits - 797
UTOPIA	Universal Test and Operations Interface Hits - 746
UTP	Unshielded Twisted Pair Hits - 777