Vision System Manual
227
Matrix
Glossary
DIP : Digital Input Port.
DOSA : Direct Outward System Access. A facility to allow a remote.
DTMF : Dual Tone Multi Frequency. When a code (digit) is dialed, two different specific
frequencies are transmitted.
FLASH : A code required to use various system features.
LED : Light Emitting Diode.
LCD : Liquid Crystal Display.
MDF : Main Distribution Frame.
OFF-HOOK : A condition in which the handset of the telephone instrument is lifted from the
cradle.
ON-HOOK : A condition in which the handset of the telephone instrument rests on the
cradle (Idle condition of the phone).
P & T : Post and Telegraph.
PAS : Public Address System.
PSTN : Public Switch Telephone Network.
PULSE DIALING : A type of signaling in which codes (digits) are dialed in pulses.
PULSE : A waveform generated by making and breaking of loop current.
RTC : Real Time Clock. Date and time keeping circuit.
SA MODE : System Administration Mode. General housekeeping functions are allowed from
SA Mode.
SA : System Administrator.
SE MODE : System Engineer Mode. Entire programming can be done from this mode.
SE : System Engineer.
SMDR : Station Message Detail Recording. Cost calculation of the calls made by a
station.
SP : Service Provider.
STATION : Internal station to which a telephone is connected.
SWG : Standard Wire Guage.
TONE DIALING : A type of signalling in which codes (digits) are dialed in DTMF mode.
TONES : Different frequencies used for signaling.
TRUNK : An external trunk line coming from Service Provider.
PBX : Private Branch Exchange.
=X=X=
To Next Page
Loading...
Need help?
General
