Operating Principle
INSYS Modem 336 LL 2D/4D 5.x Originate / Answer
11
Operating Principle
This chapter describes the basic procedures to operate and configure a
INSYS Modem
336 LL 2D/4D 5.x Originate / Answer. The INSYS Modem 336 LL 2D/4D 5.x Originate /
Answer is configured and operated via AT commands. You can enter these commands
yourself with the help of a terminal program and the AT command reference.
11.1
Operation with the Terminal Program
In general, any terminal program may be used. We recommend the program "Ter-
aTerm" by T. Teranishi. It is available free of cost on the Internet at
http://hp.vector.co.jp/authors/VA002416/teraterm.html.
Configuration and settings of the INSYS Modem 336 LL 2D/4D 5.x Originate / Answer
with a terminal program
How to configure and operate the INSYS Modem 336 LL 2D/4D 5.x Origi-
nate / Answer with a terminal program.
The INSYS Modem 336 LL 2D/4D 5.x Originate / Answer is connected to the
PC and switched on.
The Power LED, the OH LED and the DCD LED light up.
A terminal program is installed on the PC.
1.
Start your terminal program.
2.
Open the serial port to which you connected the INSYS Modem 336 LL 2D/4D
5.x Originate / Answer.
COM1 under Windows corresponds to /dev/ttyS0 under Linux.
3.
Press the reset key for 1 second.
The INSYS Modem 336 LL 2D/4D 5.x Originate / Answer will switch into
configuration mode and the DCD LED and the OH LED will go out.
In the terminal program, the message
NO CARRIER
is displayed.
4.
Type the character string
AT
into the terminal program. Complete the entry
by pressing the Enter key.
Each command input starts with
AT
and is completed with the Enter key.
The INSYS Modem 336 LL 2D/4D 5.x Originate / Answer responds with
OK
.
If the INSYS Modem 336 LL 2D/4D 5.x Originate / Answer does not respond,
this may have three reasons:
30
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