Black Box 3600 Manual De Usuario

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