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Glossary
RSIU ~
TAPI
Strata DK Programming 5/99 GL-11
Glossary
RSIU Optional RS-232 Serial Interface Unit—An optional PCB that provides interface to
any of the following features: voice mail SMDI, MIS for ACD, SMDR, local or
remote DK Admin/DK Backup Personal computer, built-in (RMDS) or external
system maintenance modem, Open Architecture personal computer. By itself, the
RSIU PCB provides one interface port. With up to three RSIU/RMDS
subassemblies, it can provide up to four interface ports.
RSTU Standard Telephone Interface Unit—An optional PCB (an older version of RSTU2)
with a built-in ring generator that provides interface for eight-standard telephones
or optional hardware peripherals (voice mail devices, Background music source,
fax machines, etc.). The RSTU has a built-in 80V RMS sine wave ring generator.
The RSTU also has connectors for the R48S, which extends station loop length and
is described in this section.
RSTU2 Standard Telephone Interface Unit—An optional PCB functionally identical to the
RSTU. RSTU2 also contains a 90-volt DC message waiting/generator/switching
circuit to operate standard telephone message waiting lamps.
RWBF1 Wall bracket Fixture—Bracket that is part of an installation kit (RFIF) that is used
to floor mount systems.
RWIU/WWIS Strata AirLink Wireless System Interface Unit—A proprietary PCB that enables
wireless telephone functionality to Strata DK systems.
RFMF Floor Mount Fixture—Fixture that is part of an installation kit (RFIF) that is used to
floor mount systems.
R48S Optional 48V Power Supply—Subassembly that can be connected to the RSTU or
RDSU to extend the loop length of standard telephone circuits (including the
resistance of the phone) from 600 ohms to 1200 ohms.
[SDN] Secondary Directory Number.
SF Super Frame.
SLT Single-line Telephone.
SMDI Simplified Message Desk Interface: RS-232 link from PIOU, PIOUS, RSSU, RSIS,
or RSIU modular jack connected to a voice mail machine to provide Strata DK
voice mail integration.
SMIS Software MIS for ACD.
SSTU Factory-installed sub-unit board that is “piggy-backed” onto the PSTU or PSTU2.
S/T Interface Reference interface points (“S” or “T”) of an ISDN network. S/T interfaces are
RJ-45, 8-wire connection interfaces for ISDN equipment. An NT-1 is needed to
network U-type BRI lines to S/T type interfaces.
TAPI Telephone Application Programming Interface.
Term Definition