Instruction manual

MERLIN LEGEND Communications System Release 5.0
System Planning
555-650-112
Issue 1
June 1997
Glossary
Page GL--18
T
system
renumbering
Procedure used to change the numbers assigned to
telephones, adjuncts,
calling group s, paging groups, park
zones,
Remote Access , and lines/trunks.
T1 Type of digital transmission facility that in North America
transmits at the
DS1 rate of 1.544 Mbps.
T1 Switched 56
service
T1 digital data transmission over the public network at 56
kbps .
telephone power
supply unit
Equipment that provides power to an individual telephone.
TAPI Telephony Application Programming Interface. An
application programming interface that allows computer
telephony applications to be used. TAPI is not yet
suppported by the MERLIN LEGEND Communications
System.
See also TAPI, CTI
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 telephones or Remote
Access
telephones.