Trust Communicator 56K ESP-2 Manuale utente

Communicator 56K ESP-2

Without the written consent of the manufacturer it is prohibited to reproduce or

transfer any part of this manual in any format, either electronically or mechanically,

as photocopy or recording, information or search systems other than for personal use

by the purchaser.

Liability

The manufacturer accepts no liability for any explicit or implicit guarantees, including

but not limited to the guarantees for saleability and suitability pertaining to a given

objective with respect to the software, the enclosed product manual or manuals and

written documentation and all other hardware included. The manufacturer reserves

the right to modify or improve its product without prior warning or acknowledgement

of any kind to third parties.

The manufacturer accepts no liability for any ensuing or accidental damages,

including damages resulting in any form of business or commercial forfeiture on the

strength of use of the product.

All company and product names are trademarks or registered trademarks of the

relevant owners.

Preface

The Communicator 56K ESP-2 serie comprises modems for normal, analogue

telephone lines. The modem can be installed by the user. This does not any require

specific expertise.

The following layout is used to show commands:

‘Configuration screen’ A software concept. These are usually shown on the screen.

<RETURN> The key on the keyboard which is to be pressed.

[c:\setup] A command that is to be entered using the keyboard.

Important information is given in the form shown below:

Note: The diskette should not be formatted.

Warning: This may cause a hazard!

Comunicator 56K ESP-2

Contents

1. Introduction................................................................................. 1

2. Safety First.................................................................................. 1

3. How to install your modem......................................................... 2

3.1 Hardware............................................................................... 2

3.2 Software................................................................................3

3.2.1 Control program .............................................................3

3.2.1.1 DOS........................................................................ 3

3.2.1.2 Windows 3.1x.......................................................... 3

3.2.1.3 Windows 95/98 with Plug & Play models.................3

3.2.1.4 Windows NT............................................................3

3.2.2 Sending and receiving fax messages .............................. 4

3.2.2.1 DOS........................................................................ 4

3.2.2.2 Windows 95/98, and NT......................................... 4

4. How to use your modem............................................................. 4

5. Maintenance................................................................................ 5

6. Troubleshooting.......................................................................... 5

Appendix A: Technical specifications............................................... 8

Appendix B: Conditions for 56K connection..................................... 8

Communicator 56K ESP-2

1. Introduction

The Communicator 56K ESP-2 is a modem intended for public (analogue) telephone

network connections. For modem connections, the maximum data transfer speed is

56,000 bps. This is approximately 5.5 KB per second. Fax messages are sent at a

maximum of 14,400 bps. You can also use the Communicator 56K ESP-2 as an

answering machine. The Communicator 56K ESP-2 complies with V.80

recommendations and is therefore suitable for video conferencing and

telecommuting.

The Communicator 56K ESP-2 modems cannot be used for ISDN or other telephone

systems using digital code.

2. Safety First

The Communicator 56K ESP-2 is designed for standard analogue telephone line

connections. Do not connect it to a digital telephone system or to a network. This

may cause damage.

Use the modem in dry spaces only.

Do not connect or disconnect any equipment if the computer has not been turned off

yet. This may cause damage to the equipment.

the Communicator 56K ESP-2 has a power supply. This mains supply is suited for

Europe only and should only be installed in dry spaces. Unplug the equipment if you

are going on holiday or planning on not using the modem for a long period. Do NOT

use any other mains supply than the one provided and do NOT use this mains supply

for any other purpose (for a personal stereo, for example). This may cause fire.

During installation, please make sure that the cables do not cause any inconvenience

or get caught under or behind the leg of a chair, and so forth.

If lightning occurs, you are advised to unplug the mains supply and the telephone

connection to avoid damage.

Comunicator 56K ESP-2

3. How to install your modem

This chapter describes how to connect the modem to your computer.

3.1 Hardware

The package should contain the following:

•Modem;

•Disk containing the control program for Windows 95/98 and NT 4.0;

•Software and relevant manual;

•Telephone lead with plug;

•Adapter;

•Serial cable;

•Manual.

Contact your supplier if one or more of these items are missing.

Your modem has to be connected to your computer. The relevant leads are provided.

Proceed as follows:

1. Switch off the computer.

2. Plug the 25-pin-wide connection of the serial lead into the “RS-232” serial port

at the back of the modem.

3. Plug the other end of the serial cable into the serial port of your computer. This

is usually COM2. The cable has two connections. Choose the plug that fits.

4. Plug the telephone lead into the “LINE” connection at the back of the modem.

5. Plug in the telephone lead you find in the box. There is a possibility that you

have a version for a particular country where the telephone plug is fitted to the

cable. If so, continue with step 6.

6. Plug the telephone plug into the telephone contact.

7. Turn OFF the main switch at the front of the modem. Insert the wire of the

adapter into the “POWER” connection at the back of the modem.

8. Insert the plug into a socket.

9. Connect your telephone to the “PHONE" connection on the modem.

10. Take the phone off the hook and check that you can hear the dial tone.

11. If applicable, plug a loudspeaker or set of headphones in the “SPK” modem

connection and a microphone into the “MIC” connection.

Communicator 56K ESP-2

12. Switch on the modem. The modem will test itself, after which the equipment will

be ready for use.

13. Switch on the computer. Now you are ready to install the software.

Note: The loudspeaker and headphone connections are optional, and therefore

do not feature on all modems.

3.2 Software

3.2.1 Control program

3.2.1.1 DOS

DOS programs do not require any special installation procedure. You do, however,

need a DOS communication program. This is not provided and should be purchased

separately.

You need the following modem information in order to proceed:

•The modem COM port.

•The speed. You can choose up to a maximum of 115K2 bps.

•The transport control. RTS/CTS is usually sufficient. If possible, do not use Xon /

Xoff. This may cause problems when establishing connections with certain

services.

Proceed as follows to test the modem:

1. Start the communication program.

2. Set the right COM port.

3. Switch on the terminal mode.

4. Enter [at] and then press <RETURN>. Subsequently, the modem should

indicate either ‘OK’ or ‘0’. Check the settings if the modem does not give any

further indications. If any problems occur, consult the ‘Troubleshooting’ chapter.

3.2.1.2 Windows 3.1x

Follow the instructions for DOS. Set the modem to COM4.

3.2.1.3 Windows 95/98 with Plug & Play models

The modem is automatically recognised by the operating system after you have

started Windows 95/98. Insert the disk containing the control program in drive A and

follow the instructions on the screen.

By default, a COM port and a modem are created with the correct settings.

3.2.1.4 Windows NT

The control program on the disk supplied for Windows 95/98 is also suitable for

Windows NT 4.0. Follow the instructions in the Windows manual.

Comunicator 56K ESP-2

3.2.2 Sending and receiving fax messages

3.2.2.1 DOS

No software is supplied for DOS. If you do want to fax using DOS, select a fax

program that is compatible with Class 1 fax modems.

3.2.2.2 Windows 95/98, and NT

Install the program that can be found on the CD. Make sure you install the 32 Bits

version. See the instructions furnished with the CD for more information.

4. How to use your modem

The modem is controlled by application programs. The modem comes with an

application program that provides access to all functions. These application

programs should first be installed before you can use them. Also refer to the relevant

manual for further information.

Redial if your modem does not operate properly or if the connection is very slow. In

some areas, the quality of telephone connections may be poor.

This type of modem has various indicators. These indicators show whether the

modem has established a connection. Also refer to figure 1. The indicators notify you

about the following points:

TD Send Data Is on when the modem is sending data to another

modem

RD Receive Data Is on when the modem is receiving data from another

modem

DTR Terminal Ready Is on when the DTR signal is active

CTS Clear to Send Is on when the CTS signal is active

DCD Carrier Detect Lights up when connected.

OH Off Hook Modem uses the telephone line.

AA Auto Answer Someone is calling the modem.

PWR Power Is on when the modem is ON

Figure 1: The indicators on the front of the modem

Communicator 56K ESP-2

You can turn the modem on and off using the Power switch. The connection will be

ended immediately if the modem is switched off when a connection is still active. It is

advisable not to end a connection in this way.

5. Maintenance

The Communicator does not need any special maintenance. Clean the

Communicator ESP using a soft, damp cloth.

Do not use alcohol or any other aggressive cleaning agents on the plastic exterior, as

these may cause damage.

Never immerse the modem or the adapter in water or any other fluid. This is

dangerous and may cause irreparable damage.

6. Troubleshooting

This chapter tells you how to resolve any problems. Contact your dealer if you do not

find the required solution in this chapter.

Complaint Possible cause Solution

Modem does not

respond. Modem COM port

setting differs from

software settings.

Check that the communication

software is set to the right COM port

and IRQ settings

Initialisation string

incorrect. Check that the modem is correctly set

by the communication software. You

may be asked to enter an

‘initialisation’ string. Then enter

[AT&F] or call the help desk of the

service you are trying to use.

Modem does

establish a

connection, but

there is no data on

screen.

Communication

parameter settings

incorrect.

Check that all communication settings

(baud rate, data, stop and parity bits)

are correct and are the same on both

sides. Check that the hardware flow

control (RTS/CTS default settings) is

activated on both the modem and in

the software.

The system waits. Press <ENTER> a number of times.

The system may be waiting to receive

data from you before sending its own

data.

Terminal emulation

incorrect. Check that the correct terminal has

been set in the software. Consult your

software manual for this.

Comunicator 56K ESP-2

Complaint Possible cause Solution

The modem is

ringing, but there is

no connection.

Poor telephone line. Redial.

Poor private branch

exchange. Try a direct external line.

Wrong number. Check the number. With an internal

exchange, make sure you dial the

number for the external line.

Communication

parameter settings

incorrect.

Contact the service for the correct

communication settings.

Modem has errors

when establishing

a connection with

another modem.

Connection

interrupted by

message.

Make sure that the “Call Waiting”

mode is turned off.

Dataflow control

incorrect. Make sure that the RTS/CTS

hardware flow control is active.

Modem voice

performance poor. Incorrect modem

type selected in the

software.

Check that the correct modem type

has been selected in the voice/fax

software.

Computer too slow. Check that your computer is fast

enough to cope with voice modes

(38.4 kbps). Voice modes use the

CPU intensively and therefore require

a minimum of 486 CPU.

Error message ‘No

Dial Tone’ Telephone line in

use. Wait until it is free.

‘Phone’-and ‘Line’-

connections

swapped.

Connect telephone line to ‘Line’ port

and not to the ‘Phone’ port.

Telephone line

doesn’t work. Test with normal telephone and reset.

Non-compatible dial

tone from home

switch board.

Use direct outside line or include the

command ‘XI’ in the full ring command

to switch off dial tone detection e.g:

ATXIDT<telno>

Communicator 56K ESP-2

Complaint Possible cause Solution

Modem does not

respond. Modem is not

connected to the

mains; all indicators

are off.

Check that modem has been turned

on. Check that adapter plug is plugged

in properly.

Wrong serial port

setting in the

software.

Check the communication program

settings. External modems are usually

connected to a COM2.

Serial cable not

connected. Check the cable or replug it. If the

cable is not correctly connected and

you use Windows 95/98, then restart

the computer to set the control

program.

Modem reports

errors during data

transmission.

Speed of the port

has been set too

high.

Under DOS and Windows 3.x, most

computers can cope with speeds up to

57k6 bps. You need a 16c550 serial

port for higher speeds.

Comunicator 56K ESP-2

Appendix A: Technical specifications

Modulation

norms V.34, V.32bis, V.32, V.29, V.27ter, V.23, V.22bis, V.22, V.21

ch2, V.17, Bell212/103

56 kbps norm K56Flex, V.90

Synchronous

protocol V.80 for video conferencing H.324 norm

Compression V.42bis, MNP Class 5

Error correction V.42, MNP Classes 2-4

Host interface RS 232 port for external models

FAX group Group III

FAX command Class 1

Send levels -10 dBm +/- 1 dB

Sensitivity -43 dBm

Capacity 3 W max.

Temperature in operation: 0°C to 55°C, in storage : -20°to 80°C

Appendix B: Conditions for 56K connection

Under certain circumstances, your Communicator 56K ESP-2 can receive data at a

speed of a maximum of 56,000 bits per second. If a connection is not possible at

56,000 bps the modem will automatically drop to a lower speed.

A speed of 56,000 bps is only possible

for receiving data

under the following

conditions:

•You are connected to the Internet;

•Your Internet service provider has a 56,000 bps compatible connection station on

the number you are calling;

•You are connected to the Internet supplier by a modern (digital) telephone

switchboard. Check with your telephone company if necessary.

•You are using a direct analogue external line and not a connection via an in-

house switch board or ISDN.

Under all other circumstances and

for sending data,

the maximum speed is 33,600

bps.

Note: Speed depends upon the quality of the telephone line. The communicator

56K ESP-2 will drop the speed if the connection is poor.

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