Digicom SNM70 Manual de usuario

SNM70

Central Site Modem

USER'S MANUAL

Cod. 7D1114 rev. 1.0 02/98

SNM70CP.pm6 4/8/98, 14:461

http://www.digicom.it

SNM70CP.pm6 4/8/98, 14:462

Index

INDEX

PREFACE II

1. GENERALITY 1.1

1.1. PRODUCT PACKAGE CONTENTS 1.1

1.2. PRODUCT FEATURES 1.1

2. INSTALLATION 2.1

2.1. HARDWARE INSTALLATION 2.1

2.2. SOFTWARE INSTALLATION 2.1

2.2.1. WINDOWS 95/NT4.0 2.2

2.3. FRONT PANEL 2.2

Fig. 3.1. SNM 70 Front view 2.3

2.4. REAR PANEL 2.3

Fig. 3.2. SNM 70 Back side view 2.3

3. DESCRIPTION 3.1

3. DUAL MODEM SETUP 3.1

3.1. MODEM AT COMMAND SET 3.1

3.1.1. AT COMMAND SET DESCRIPTION 3.1

3.2. S-REGISTERS 3.11

3.2.1. S REGISTER DESCRIPTION 3.12

3.3. FACTORY CONFIGURATIONS 3.15

3.3.1. MODEM FACTORY CONFIGURATION 3.15

4. DIAGNOSTIC 4.1

4.1. DIAGNOSTIC ACTIVATION 4.1

4.2. DIAGNOSTIC ACTIVATION 4.1

4.2.1. LOCALANALOG LOOPBACK TEST (CCITT LOOP 3) 4.1

4.2.2. LOCAL DIGITAL LOOPBACK TEST (CCITT LOOP 2 LOCAL) 4.1

4.2.3. LOCALANALOG LOOPBACK WITH SELF TEST 4.2

4.2.4. REMOTE DIGITAL LOOPBACK 4.2

4.2.5. REMOTE DIGITAL LOOPBACK WITH SELF TEST 4.2

DECLARATION OF CONFORMITY IV

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Preface

PREFACE

any form or by any means, electronic, otherwise, without the prior written permission of Digicom S.p.A..

The contents of this booklet may be modified without prior permission.

Every possible care has been taken in testing and putting together all the documentation contained in this

booklet, however Digicom can not take any responsability brought by the use of this booklet.

Microsoft, Windows 95 are trademarks of Microsoft Corporation.

ENVIROMENTAL CONDITIONS

ENVIRONMENTAL RELATIVE

TEMPERATURE HUMIDITY

from 0 to + 45

Cfrom 20 to 80% n.c..

Rapid changes of temperature or humidity should be avoided (0,03

C/min).

This equipment, including cables, should be installed in an area free from:

Dust, humidity, heat from direct sun light.

Objectswhich irradiateheat.These couldcause damageto thecontainer orother problems.

Objects which produce a strong electtromagnetic field (loudspeakers, etc.)

Liquids or chemical corrosive substances.

GENERAL WARNINGS for all equipment powered directly from mains power

POWER SUPPLY 220-240 Volt single phase 50 Hz

FUSES only those indicated on the equipment label

ISOLATION CLASSIFICATION only those indicated on the equipment label

NOMINAL CURRENTS only those indicated on the equipment label

To avoid electric shock, the equipment should never be opened.Ask qualified personnel help.

Disconnect the power cable from the wall outlet when the equipment is not to be used for a

long period. To disconnect the cable pull it by the plug, never pull it by the cable itself.

If there should be liquid or object penetration in the equipment, disconnect the power cable

and call a qualified personl for testing.

WARNING

In this equipment is present a Lithium Battery to store the user configuration.

Pleasedonot recharge,dismount, heat andburn thelithiumbattery. Keep awayfrom children.

In case of substitution, please use a similar battery; as a different one can cause explosions

or fire.

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Preface

III

Please contact authorized people to change the battery.

The battery is polarized, please do not reverse the end terminals. Battery are considered

dangerous weste goods and be destroyed following the present regulation.

CLEANING THE TERMINAL

Use a clean and soft cloth. Wet the cloth with water or natural detergent if it is necessary to

remove any stains.

Never use chemical products such as petrol or solvents.

VIBRATIONS OR DROPPING

Caution against vibrations and dropping

WARNING

This is a class A product.

In a domestic environment this product may cause radio interference

in which case the user may be required to take adequate measures.

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Generality

1.1

1. GENERALITY

This operating manual describes the installation

procedures and the main features of the

SNM 70, the innovative K56Flex™ host modem.

DEAR CUSTOMER,

Thank you for choosing a Digicom modem.

Untilrecently only thelarge InternetService Providershavebeen ableto offer56Kconnectivity

totheir subscribers. Now Digicom,Italy’smajor modemmanufacturer,providesthisinnovative

and unique 56K host modem that will enable any business to benefit from the near ISDN

connecting speeds for remote access to LANs, BBSs or PC’s.

The SNM70 K56Flex host modem is a direct replacement for the slower 33.6 V34bis modem.

At the host site (or remote LAN access node) the SNM-70 connects to the telephone network via a

single ISDN Basic rate Interface (BRI). The SNM-70 has 2 RS232 communication ports for interface

to the host equipment and can accept 2 simultaneous incoming connections at 56K.

To realise the 56K connection speed the remote user (client) must have a K56Flex standard

modem and simply dials one of the two telephone numbers to connect to the host modem.

Onhandshaking the SNM70determines themaximumspeed of56K andareliable connection

is established. If the incoming call is from a slower 33.6 V34 modem then connection is made

at 28.8/33.6 Kbps, or the fastest speed supported by the remote user modem.

1.1. PRODUCT PACKAGE CONTENTS

1 User manual

1 SNM 70 modem

1 Cable to connect the modem to the ISDN line

1 Floppy diskette or CD ROM containing Modem Drivers

1.2. PRODUCT FEATURES

Computer speed: up to 115.200 bit/s

Serial interfaces: 2 x V.24 (RS232)

Enchanced AT commands set with autobaud for the data mode up to 115.200 bit/s.

Up to 2 factory configurations

Up to 4 telephone numbers in the phone book

Data modem modes for: K56flex™, V.34, V.32bis, V.32, V.22bis, V.22.

Auto dial and autoanswer

Error Correction: MNP 4 and V.42

Data Compression: MNP 5 and V.42bis

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Installation

2.1

2. INSTALLATION

2.1. HARDWARE INSTALLATION

See the following picture to connect

your modem to the COM port of your

PC or Router and the ISDN cable to

the BRI socket.

See the following picture to connect

your modem to the GEO port of your

Macintoshandthe ISDN cableto the BRI

socket.

After the cable installation, connect the power cord to the

mainpower supplyoutletand switchON thepower switch

on the rear panel. Check that the green LED PWR

indicator light is on.

For the next step see the section Software Installation.

2.2. SOFTWARE INSTALLATION

WINDOWS 95/NT4.0 DRIVER

Before starting with the software installation, please read the file Readme.txt present on the

Floppy Disk or the CD ROM included with the modem package. In this file you can read more

details about the driver installation for the different versions of Windows 95 and also the latest

release notes or driver upgrades not available at the time of printing this manual.

MACINTOSH Driver ARA/Open Transport

Make a copy of the SNM70 driver file from the Floppy Disk or the CD ROM to your hard disk

in the folder Modem Script (System Folder- Extension-Modem Script).

Your SNM 70 driver is present in the modem list and available for any application that uses

ARA/Open Transport.

Remember to select the correct communication port in the application in accordance with the

hardware installation.

OTHER DRIVERS

For other Operating Systems, see the installation procedures on the Floppy Disk or the CD

ROM included with the modem package.

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2.2

Installation

2.2.1. WINDOWS 95/NT4.0

1. Run Windows95/NT4.0

2. Select from the START icon: Settings-Control Pannel- Modem-Add

3. From the window Install New Modem put a tick in the box “Don’t detect my modem: I will select it

from a list” and select the button: Next.

4. From the new window Install New Modem click the button Disk

5. Insert the Floppy disk or the CD ROM in the appropriate drive and from the window : Install from

disk check that the correct driver letter appears showing where your Floppy/CD ROM is inserted

(eg. A or D), then click the button OK

6. From the list select the driver to use (e.g. Digicom SNM 70) and click Next

7. Select the COM port where your modem is connected, then clik Next and then Finish

Your modem is installed and ready to make the first connection.

2.3. FRONT PANEL

On the front panel are present LED that indicate the most important interface circuit in use. In

the following table, is present the complete description and function of each LED:

NAME COLOR STATUS FUNCTION

PWR green on SNM 70 powered ON

C108 (DTR) red on Data Terminal Ready Modem A (JC)

C103 (TD) red on Transmit Data Modem A(JC)

C104 (RD) red on Received Data ModemA(JC)

C109 (DCD) red on Data Carrier Detector Modem A (JC)

C108 (DTR) red on Data Terminal Ready Modem B(JA)

C103 (TD) red on Transmit Data Modem B (JA)

C104 (RD) red on Received Data Modem B (JA)

C109 (DCD) red on Data Carrier Detector Modem B (JA)

MDM1 red on Modem 1 (A) active

off Modem 1 (A) non active

MDM2 red on Modem 2 (B) active

off Modem 2 (B) non active

B1 red on B1 channel in use

off B1 channel non active

flashing B1 channel busy

B2 red on B2 channel in use

off B2 channel non active

flashing B2 channel busy

TEST push-button Active the Loop 3 test (Local Loop)

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Installation

2.3

SNM70

CENTRAL SITE MODEM

C10 8

C10 3

C10 8

PWR

C10 9

MDM1

MDM2

C10 9

C10 8

C10 3

C10 4

C10 8

C10 3

C10 4

Fig.3.1. SNM 70 Front view

2.4. REAR PANEL

On the rear panel is the power switch, the two V24 interface connectors and the RJ45 ISDN

network connector.

JC RS232-V.24/V.28 female serial interface connector of the modem 1 (A)

JA RS232-V.24/V.28 female serial interface connector of the modem 2 (B)

JD RJ45 ISDN network connector

JA JC JD JB

Fig.3.2. SNM 70 Back side view

SNM7002.pm6 4/8/98, 14:463

Description

3.1

3. DESCRIPTION

3. DUAL MODEM SETUP

The SNM70 has dual, fully featured, digital K56flex modems inside one box: infact on the rear

pannel you can see the RS232 serial interface connector of modem 1 (orA) indicated as JC

and the RS232 serial interface connector of modem 2 (or B) indicated as JA.

For the above reason, the user must setup of the two modems separatly. We suggest startingt

the setup with the modem 1 connector JC and then proceed with the modem 2 connector JA.

The following AT command description is valid for each modem.

3.1. MODEM AT COMMAND SET

The modems support the AT command set, to define the configuration, initiate or terminate

modem communication, and to test the modem and the communication link. The modem will

work in two basic modes: command mode and data mode.

Command mode is when the modem is not connected to another modem, therefore “Off Line”

or in a idle condition. In this mode the modem will accept commands beginning withATprefix.

Data mode is when the modem is connected to another modem, that is an “On Line” condition

or functioning. In this mode all the characters sent from computer are interpreted as data and

they are sent to the remote modem. You may switch from data to command mode by entering

anescapesequence.Thedefault escapesequenceis +++this must haveat least onesecond

before and after being keyed. To go back into data mode simply typeATO.

Data Length

Each caracter of the AT command must be an ASCII code with any of the following format

combinations:

START BIT DATA BIT PARITY STOP BIT TOTAL

171110

180110

170210

171110

The modem will accept even, Odd, mark, or space.

3.1.1. AT COMMAND SET DESCRIPTION

AT Attention

All the characters following the letters ‘AT’ are commands. InAT command mode the modem

automatically detects the computer speed and parity format. The modem will response using

the same speed and parity format ofAT command.

SNM7003.pm6 4/8/98, 14:461

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