AT&T MERLIN LEGEND Installation & Maintenance Manual page 687

Glossary
application
Software and/or hardware
that adds functional
capabilities to the
communications system. For
example, the Call
Management System (CMS)
is a DOS-based application
that simulates the actions of a
system operator by
answering calls and
distributing them to individual
telephones.
asynchronous data transmission
A method of transmitting a
short bit stream of data, such
as printable characters
represented by a 7- or 8-bit
ASCII code. Each string of
data bits is preceded by a
start bit and followed by a
stop bit, permitting data to be
transmitted at irregular
intervals. See also
synchronous data
transmission.
AT&T Switched Network
(ASN)
AT&T telecommunications
services provided through an
Integrated Digital Services
Network Primary Rate
Interface (lSDN-PRI) line or
trunk: Accunet® switched
digital service, Megacom®
WATS, Megacom 800,
Software Defined Network
(SDN), MultiQuest, and
Shared Access for Switch
Services (SASS).
GL-2 Glossary
Audix Voice Power Package
(AVP)
A voice-processing
application, part of Integrated
Solution II, that provides
automated attendant, call
answering, voice-mail,
message drop, and
information services for use
with the communications
system.
automatic number identification
(ANI)
The process of automatically
identifying a caller's billing
number and transmitting that
number from the caller's local
central office (CO) to another
point on or off the public
network. INFO-2 (INformation
Forwarding-2) is AT&T's ANI
service.
automatic-ringdown tie trunk
See automatic-start tie trunk.
automatic-start tie trunk
A tie trunk on which incoming
calls are routed to an
operator or other designated
destination without a start
signal. Also called automatic-
ringdown tie trunk or auto-in
tie trunk.
auxiliary power unit
A device that provides
additional power to the
communications system.