Filter
Top Products
MERLIN LEGEND Communications System Release 6.0
System Manager’s Guide
555-660-118
Issue 1
February 1998
Glossary
Page GL-26
U
TAPI Telephony Application Programming Interface. An
application programming interface that allows computer
telephony applications to be used. TAPI is not yet
supported by the MERLIN LEGEND Communications
System.
See also TAPI, CTI
telephone power
supply unit
Equipment that provides power to an individual telephone.
terminal adapter See
ISDN terminal adapter
.
tie trunk Private trunk directly connecting two telephone switches.
timed flash See
switchhook flash
.
tip/ring Contacts and associated conductors of a
single-line
telephone
plug or jack.
touch-tone
receiver
See
TTR
.
T/R See
tip/ring
.
trunk Telecommunications path between the communications
system and the telephone company central office (
CO
) or
another switch. Often used synonymously with
line
.
trunk jack See
line/trunk jack
.
trunk pool See
pool
.
TSAPI Telephony Services Application Programming Interface.
An application programming interface that allows computer
telephony applications to be used. TSAPI is supported by
the MERLIN LEGEND Communications System Release
5.0.
See also TAPI, CTI.
TTR (touch-tone receiver) Device used to decode
DTMF
touch-
tones dialed from
single-line
or
Remote Access
telephones.
UDP (Uniform Dial Plan) Composed of the
local dial plan
and
non-local dial plan
. A dial plan that allows a caller at any
extension in a
private network
to dial the same number of
digits to reach any other extension in the private network,
even if the originating extension is physically connected to
one communications system and the terminating extension
is physically connected to a different communications
system.