Lucent Technologies Definity Enterprise Communication Server 8.2 User Manual

Issue 1

April 2000

Glossary and abbreviations 

1660

 

Touch-tone receiver

Terminating trunk transmission

See 

tandem tie-trunk network (TTTN)

.

Teletypewriter

Usage-allocation plan

Universal asynchronous transmitter

Uniform call distribution

Unrestricted call list

See 

Uniform Dial Plan (UDP)

.

Underwriter Laboratories

User manager

A feature that allows a unique 4- or 5-digit number assignment for each terminal in a multiswitch configura-
tion such as a DCS or main-satellite-tributary system.

Unified Network Management Architecture

Uniform numbering plan

Uninterruptible power supply

User service-order profile

UNIX-to-UNIX Communications Protocol

User-to-user information