Trust Communicator 56K ESP-2 User manual

Communicator 56K ESP-2
Copyright
Without the written consent of the manufacturer it is prohibited to reproduce or
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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

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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.

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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.

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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
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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

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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.

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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
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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.

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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.