Toshiba strata CT Installation & Maintenance Manual page 378

Glossary
Term
SSTU
S/T Interface
TAPI
TA
TE
TSPI
TTY
H
TTY-PC-CABLE
U Interface
Universal slot
C
GL-8
Factory-installed sub-unit board that is "piggy-backed" onto the PSTU
or PSTU2.
Reference interface points ("S" or "T") of an ISDN network. S/T
interfaces are RJ45, 8-wire connection interfaces for ISDN equipment.
An NT1 is needed to network U-type BRI lines to S/T type interfaces.
Telephone Application Programming Interface.
Terminal Adapter or ISDN modem that converts PC and other types of
protocol into a signal that works with ISDN. Generally, TAs support
RJ11 voice ports and RS-232C or V.35 or V.449 data interfaces.
Terminal Equipment. This refers to devices using ISDN service
(telephones, faxes, computers, etc.). TE1 supports ISDN formats with
S/T or U-type intefaces.
Telephony Service Provider Interface.
Flexible RS-232 port which can be used for maintenance SMDI and
MIS (ACD).
Designed to connect directly to the DB9 connector of PC COM ports,
while PPTC connects directly to an ASCII terminal female DB25, not a
PC COM port male DB25.
A single twisted pair of copper wire on an RJ11 jack. The wiring is
identical to POTS, with different signaling. Only one U-interface device
can be attached per line.
Slots in a telephone KSU/cabinet that are used for a variety of optional
PCBs.
Definition
Strata CT I&M Manual October 2000