Abbreviations and Acronyms

P

 

PBX

Private Branch Exchange

PC

Personal Computer

pc

Printed circuit (board)

PIW

Power Indication

PN

Pseudo random

PND

Present Next Digit

POTS

Plain Old Telephone

 

Service

PRI

Primary

PRO

Program Option

PROG,

Programmable

PR

 

PROM

Programmable -

 

Read Only Memory

PSK

Phase Shift Keying

PSTN

Public Service Telephone

 

Network

PWI

Power Indication

Q

 

QAM

Quadrature Amplitude

 

Modulation

R

 

RAD

Random Access Method

RAL

Remote Analog Loopback

RAM

Random Access Memory

RC

Receive Clock

RCD

Receiver-Carrier Detector

RCV,

Receiver

RCVR

 

RD

Receive Data

RDL

Remote Digital Loopback

RI

Ring Indication

RL

Remote Loopback

RLO

Request List of Stored

 

Options

RLSD

Received Line Signal

 

Detector

RLV

Request List of Version

rms

Root-Mean-Square

RMT LB Remote Loopback

RNG

Ringback Detection

RO

Receive Only

ROM

Read Only Memory

RT

Remote Terminal

RTS, RS

Request to Send

RX

Receive

S

 

SD

Send Data

SDLC

Synchronous Data Link

 

Control (IBM)

SGND,

Signal Ground

SG

 

SH

Switch Hook

SNR

Signal / Noise Ratio

SPID

Service Profile Identifier

SQ

Signal Quality

SQM

Signal Quality Monitor

SS

Systems Status

STX

Start of Text

SYN

Synchronization Character

T

 

TC

Transmit Clock

TD

Transmit Data

TE

Terminal Equipment

TEI

Terminal Endpoint

 

Identifier

TELCO

Telephone Company

TELSET Telephone Set

TM

Test Mode

TP

Test Pattern

TR

Terminal Ready

TST

Test

TX

Transmit

U

 

UART

Universal Asynchronous

 

Receiver / Transmitter

USOC

Universal Service

 

Ordering Code

V

V.CCITT Code Designation

V.24 List of definitions for interchange circuits between data terminal equipment and data circuit-terminating equipment (and provisional

 

amendments, May 1977)

Vac

Volts Alternating Current

VAL

Valid

Vdc

Volts Direct Current

Modem 3600

G-3

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Black Box 3600 MODEM manual Pbx