Motorola V3229 - 14.4 Kbps Modem Manual de usuario

V.3229 / V.3229L

Installation and Operation

Motorola

Doc. 6 209 5262 07 014

20 Cabot Boulevard

May 1995

Mansfield, MA 0204

(50 ) 261-4000

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Introduction

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Introduction

Chapter 1

Introduction

GENE AL

The UDS V.3229 and the V.3229L are versatile high

speed asynchronous or synchronous modems that

allow data transfer between two host computers via

the telephone communication system.

The modems can operate full duplex on both dial up

and leased lines. The modems are compatible with

all required standards and recommendations, and

feature a wide variety of automatic, remote, and

backup capabilities.

Major characteristics include:

¥14.4 kbps data rate

¥V.42 bis and MNP 5 error control protocols with

data compression

¥a V.25 bis autodialer

¥secure operation

¥trellis coding for superior signal to noise perfor

mance.

Data ates

The V.3229 operates at data rates of

¥7.2, 12.0, and 14.4 kbps trellis coded per CCITT

V.32 bis

¥9.6 kbps trellis coded and 4.8 and 9.6 kbps uncoded

per CCITT V.32 bis

¥2400 and 1200 bps per CCITT V.22 bis

¥300 bps per Bell specification 103

DESC IPTION

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Functional

The V.3229 processes serial asynchronous data from

a DTE at all standard rates from 300 bps to 57.6 kbps,

and serial synchronous data at rates from 1.2 to 14.4

kbps. Transmission can be over the dial up telephone

network or 2 or 4 wire, point to point, dedicated

leased lines. The maximum telephone line speed is

14.4 kbps.

Built in test features can determine system perfor

mance and isolate faults in the data link.

Operation and configuration are controlled by either

the front panel LCD, the AT command set or V.25

command set. Changes can be made easily.

AutoConfiguration

AutoConfigure allows any of eleven option sets to be

quickly enabled or selected as the powerup configu

ration. There are two ways to enable option sets: the

LCD and the AT command set. Refer to Chapter 3

and 5 respectively.

Appendix D lists the nine factory option sets. For

maximum versatility two additional options sets de

signed by the user can also be stored for instant recall

or as the powerup configuration.

Remote configuration allows option changes to be

made to a remote unit.

Standard and L

Models

The modem is available in two models: standard and

the L model. The standard model has a 32 character

(liquid crystal display) LCD front panel with three

pushbuttons for option selection (Figure 1 1).

The L model has a TALK LED and TALK/DATA

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Introduction

button. The LED is on in talk mode and off in data

mode; the pushbutton selects between the two modes

(Figure 1 2).

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Introduction

Both models have six light emitting diodes (LEDS)

to show communication status between the modem

and data terminating equipment (DTE).

Standalone and

Shelf Units

The standard and L models are available in both

standalone or shelf mount configurations. The pc

(printed circuit) boards are identical for either so that

the standalone board can be field changed for use in

the shelf or vice versa. Hardware straps on the pc

board offer additional customer options.

The shelf mount unit has edge connectors that insert

into the shelf backplane. The shelf backplane per

forms the same functions as the standalone rear pan

el.

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Introduction

The standalone rear panel has an EIA 232 DTE

connector, an 8 pin (TELSET / LEASED LINE)

jack, and an 8 pin (DIAL) jack, the power switch,

fuse and power cord (Figure 1 3). Some versions

have a 110/220V selection switch.

HOW TO USE THIS

MANUAL

Most of the manual applies to both the standard and

the L model. Users of the L model can ignore

Chapter 3 and other explanations of LCD and push

button operation throughout the manual. However,

these discussions include valid operating informa

tion and can be consulted as desired.

Option Selection

There are six ways to change or select options:

¥LCD Using the front panel LCD and pushbuttons

is simple, straightforward, and requires the least

amount of technical background. Refer to Chapter 3.

¥ Software program A variety of software programs

is available, or advanced computer users can write

their own software programs to interact with the

modem. This manual does not discussed software

programs.

¥AT Commands The AT compatible command set

can be used to select modem options. Refer to

Chapter 5.

¥Status Registers A series of special ATS com

mands allows the user to change the decimal or

hexadecimal value of a memory byte to change one

or more options in that byte. Refer to Chapter 6.

¥Single Bit Commands A second series of special

ATS commands allows the user to change single bits

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Introduction

within a byte to change an option. Refer to Chapter 6.

¥V.25 bis Commands An extended set of V.25

commands allows selection of modem options dur

ing synchronous operation. Refer to Chapter 7.

Quick Startup

A quick startup procedure at the beginning of Chap

ter 4 provides information for quickly getting online.

Specifications

Appendix A contains modem specifications.

SECU ITY

Three separate security schemes prevent unautho

rized access to local and remote modems and DTEs:

¥An AT command password prevents remote config

uration of the modem.

¥An AT command password prevents remote access

to the DTE while operating in dial up mode.

¥An autocallback option requires the remote modem

to callback the originating modem using the remote

unit's autodial capability.

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Installation

Chapter 2

Installation

GENE AL

This chapter provides information for the mechanical

and electrical installation of the modem.

SITE

SELECTION

Install the modem within 6 feet of a standard 115 or

230 Vac grounded wall outlet as required for the

specific model and no further than 50 feet from the

terminal equipment.

The installation area should be clean and free from

extremes of temperature, humidity, appreciable

shock, and vibration. See equipment specifications

in Appendix A for details. Allow clearance for

operation and maintenance and at least 4 inches at

the rear for cables and air flow.

eceipt

Inspection

After unpacking the equipment, check the contents

against the packing list. Inspect the equipment for

any damage that may have occurred in shipment. If

any damage or equipment shortage is noted, refer to

the warranty literature. Keep the shipping container

and material.

Tools equired

Normal installation requires a screwdriver to secure

the data terminal equipment (DTE) cable to the mo

dem and to attach the telephone cable to the 42A

terminal block for leased line operation.

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Installation

Strap Inspection

Several hardware straps on the printed circuit board

may require changing prior to installation. Refer to

Strap Option Selection at the front of Chapter 3 for

information.

ELECT ICAL

INSTALLATION

The rear panel (Figure 2 1) houses connectors for the

DTE cable and telephone lines.

AC Power

Connection

Power is supplied through a 6 foot line cord with a

grounded 3 wire plug. If common ground is avail

able through the third prong of the plug, a separate

ground wire is not required. If the modem has a 110/

220V switch, select the appropriate voltage. If 220

Volt operation is selected, install the supplied 1/8

Amp fuse before connecting power to the modem.

DC Power

Input Option

Caution: o protect the dc to dc converter from

damage, ensure the positive and negative leads are

properly connected.

If the modem is equipped for dc power input, connect

12 to 60 Vdc power to the terminal block attached to

the modem back panel. A chassis ground connection

is also supplied on the terminal block.

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Installation

DTE

CONNECTION

The DTE connector is a 25 pin D series type con

forming to EIA 232 specifications. Pin signals are

shown in Figure 2 2 and described in Table 2 1.

TELEPHONE LINE

CONNECTION

The modem operates in one of three line related

modes:

¥Permissive (PSTN)

¥Programmable (PSTN)

¥Private line

Permissive and programmable modes are used on the

Public Switched Telephone Network (PSTN). Pri

vate line mode is used on 4 wire or 2 wire dedicated

leased lines. The user must decide which mode to

use and then select the telephone jack arrangement

accordingly.

PSTN Connection

Modems are registered with the Federal Communi

cations Commission (FCC) for direct connection to

the PSTN (dial up network). The label on the chassis

bottom gives the FCC registration number and other

information.

Direct connection to the PSTN provides two modes

of operation (Figure 2 3):

¥Permissive (standard)

¥Programmable

Permissive

In permissive mode, the modem transmits a maxi

mum signal level of 10 dBm. For standard tele

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