Getting Started
Dialup / Leased Line Modem
9
Getting Started
The DLM may be preconfigured at the factory. In this case your DLM should be ready to use
after you have made all hardware connections. If not preconfigured the following two
sections will provide instruction on configuring your DLM. See the Configuration Commands
section for details on some of the available DLM configuration commands.
To configure your DLM you will need to connect to a computer running Hyper Terminal or
other terminal emulator program. See Connecting to Personal Computer section above for
details on how to connect to your computer.
Setting DLM for Dial-Up Operation
The basic configuration for Dial-Up operation is the same whether the DLM will be dialing out
or answering. Each of the following commands will be entered then followed with a carriage
return (Enter Key). After entering each command wait for the “OK” response.
1. Turn on the DLM and as soon as the “DSR” and “CTS” lights turn on enter:
AT%DC0
NOTE 1: You may not get a response from this command. Some configurations
disable the response to commands as well as the echoing of characters.
NOTE 2: It is possible to set up the DLM to ignore any commands. To break out of
this mode the “%DC0” command must be sent within the first 10 seconds
after power up.
2. Reset the DLM to its factory defaults by entering: AT&F0
NOTE 1: You will get an “OK” response from this command.
NOTE 2: We recommend always restoring the DLM to factory defaults and
reentering all settings in this procedure. This guarantees the DLM is in a
known condition.
3. For connections other than to a computer where the data rate (Baud Rate) and data
format can be determined from the “AT” command the DLM will need to be set to the
correct data rate and data format. Depending on the data rate of your connection
enter one of the following command strings:
a. 19200
bps: AT$SB19200
b. 9600
bps:
AT$SB9600
c. 1200
bps:
AT$SB1200
d. 300
bps:
AT$SB300
