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DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets
555-230-112
Issue 5
May 1998
Glossary and Abbreviations
Page GL-28
International Telegraph and Telephone Consultative Committee
See International Telecommunications Union (ITU)
.
interflow
The ability for calls to forward to other splits on the same PBX or a different PBX using the Call
Forward All Calls feature.
intraflow
The ability for calls to redirect to other splits on the same PBX on a conditional or unconditional
basis using call coverage busy, don’t answer, or all criteria.
internal measurements
BCMS measurements that are made by the system. ACD measurements that are made external to
the system (via External CMS) are referred to as external measurements.
in-use lamp
A red light on a multiappearance voice terminal that lights to show which call appearance will be
selected when the handset is lifted or which call appearance is active when a user is off-hook.
INWATS
Inward Wide Area Telephone Service
IO
Information outlet
ISDN
See Integrated Services Digital Network (ISDN)
.
ISDN Gateway (IG)
A feature allowing integration of the switch and a host-based telemarketing application via a link to
a gateway adjunct. The gateway adjunct is a 3B-based product that notifies the host-based
telemarketing application of call events.
ISDN trunk
A trunk administered for use with ISDN-PRI. Also called ISDN facility.
ISDN-PRI terminal adapter
An interface between endpoint applications and an ISDN PRI facility. ISDN-PRI terminal adapters
are currently available from other vendors and are primarily designed for video conferencing
applications. Accordingly, currently available terminal adapters adapt the two pairs of video codec
data (V.35) and dialing (RS-366) ports to an ISDN PRI facility.
IS/DTT
Integrated Services/digital tie trunk
ISN
Information Systems Network
ISO
International Standards Organization
ISV
Independent software vendor
ITP
Installation test procedure
ITU
International Telecommunications Union