Multi-Tech Systems MT5600BR-V92 - Manual (Page 14)

3 Configuration
14
MT5600BR-V92 User Guide
Chapter 3 - Configuration
Configuring Your Software
Communications software must be configured to work with your modem, your computer, and the remote
system it is calling. Fortunately, most communications programs make the process easy by providing a
default
initialization string for your modem as well as defaults for most of the other required parameters.
Configuring Software for Your Modem
Because remote computers may have different connection requirements such as speed, number of bits,
parity, log-on sequences, etc., communications software is typically configured by
sessions, each session
having a unique configuration for a given connection (e.g., to an FTP site or commercial online service).
Most communications programs, however, have a separate modem configuration menu because modem
configurations rarely change from session to session.
The most important configuration is the modem initialization string. This is a sequence of commands the
software uses to configure the modem when the communications software is loaded or when a session
begins. Always begin the initialization string with the
ATtention command AT , then follow it with the
modem reset command, &F . Issuing a reset command before other commands ensures that you are
starting with a known state.
The rest of the commands in the initialization string depend on the capabilities of the modem and what
you want it to do. Some older communications programs require you to create the initialization string by
yourself. Most modern communications programs, however, provide you with a ready-made initialization
string that is automatically selected when you choose your modem model from a list. It is a poor idea to
use an initialization string intended for another modem, especially one from another manufacturer,
because modem capabilities and command implementations vary from modem to modem. However, if
your MT5600BR-V92 does not appear on a modem list, you may use the MultiModemII initialization
string.
PC Initialization Strings
We recommend the following initialization string for a MT5600BR-V92 connected to a PC-compatible
computer:
AT &F X4 S0=0 ^M
This string resets the MT5600BR-V92 to the factory default settings, selects extended result codes with
NO DIAL TONE and BUSY, and turns off auto-answer.
^M must end every string sent to the modem from
software. It is the ASCII code for the RETURN key on most keyboards, and the default code for the
carriage return character in the MT5600BR-V92 and most communications programs. The carriage return
character is defined in the MT5600BR-V92 in S-register
S3 ; if you change it, you must also change the
carriage return character code used in your communications software. If you send a command directly to
the modem in terminal mode rather than indirectly through communications software, you must end the
command string by pressing the RETURN key () instead of adding
^M to the string.