240 List of terms
PBX
Private Branch Exchange. A telephony switch that is privately owned.
PCM
Pulse Code Modulation.
PCMCIA
Personal Computer Memory Card International Association. This organization has defined a credit card sized
RTS
Return To Service.
SCSI
Small Computer System Interface. A device that enables computers to
SDI
Serial Data Interface. For some Meridian switches, provides ports between the CPU and external devices such as a teletype or maintenance telephone. More generally, an SDI is a mechanism for changing the parallel arrangement of data within computers to the serial form used on transmission lines and vice versa.
SDN
Secondary Directory Number.
SMTP
Simple Mail Transfer Protocol.
Telephone User Interface
An interface that allows the scheduling of simple conferences over a DTMF telephone.
TN
Terminal Number (CS 1000 equivalent of LEN).
TUI
See Telephone User Interface.
.WAV
File format used for storing voice files created under Microsoft
Windows.