Getting Started
Dialup / Leased Line Modem
12
5. Set DTR control and Hardware handshaking.
a. If hardware handshaking is not required enter:
AT&D0&K0
b. If hardware handshaking is required enter:
AT&D0&K1
6. Set the Leased-Line Mode:
a. Originating
DLM:
AT&L1
b. Answering
DLM:
AT&L2
7. Set inactivity timer:
The inactivity timer provides a failsafe in case communications is lost. When
communications is lost the DLM will disconnect after the specified number of minutes
then immediately attempt to reconnect.
a. If
communications
will be continuous:
AT\T1
b. If communications will be slower than 1 minute per data transfer but less 254
minutes enter: AT\Tn
Where “n” is the data transfer rate in minutes plus 1. (EG If transfer rate is 5
minutes then enter “AT\T6”.
8. Disable echoing of characters and the displaying of result codes:
ATE0Q1
NOTE:
You will not get an “OK” response from this or the following command.
Disabling the echoing of characters and displaying of result codes will
prevent the DLM from interfering with the connected devices by introducing
random characters into the data transferred. Leaving the result codes
enabled will however provide information about the connection which can
be useful for diagnosing connection problems.
9. Disable AT commands and save settings:
AT%DC1&W0
10. You are done configuring your DLM. You may test the configuration by connecting
two DLM’s together using a standard RJ-11 modular telephone cable. When set up
for Lease Line operation you do not need a telephone line. The DLMs will connect on
their own without any equipment connected to their RS232 ports.