Avaya Communication Manager Administrator's Manual page 1828

Glossary and Abbreviations
U
TTTN
See tandem tie-trunk network
TTY
Teletypewriter
U
UAP
Usage-allocation plan
UART
Universal asynchronous transmitter
UCD
Uniform call distribution
UCID
Universal Call ID
UCL
Unrestricted call list
UDP
1. User Datagram Protocol - Transport layer; connectionless, unreliable, fast.
2. Uniform Dial Plan -A feature that allows a unique 4- or 5-digit number assignment for each
terminal in a multiswitch configuration such as a DCS or main-satellite-tributary system.
UL
Underwriter Laboratories
UM
User manager
UNMA
Unified Network Management Architecture
UNP
Uniform numbering plan
UPS
Uninterruptible power supply
USOP
User service-order profile
UUCP
UNIX-to-UNIX Communications Protocol
UUI
User-to-user information
1828
(TTTN).
Administrator's Guide for Avaya Communication Manager
November 2003