Electroline Control Unit IV - Setting up a Modem

Control Unit IV Reference Manual Installation
529-0004 Ver.3 2-7
2.5 Setting up a modem
This procedure assumes that the Control Unit and the host computer (e.g. billing system)
require modems to communicate. If the host computer and the Control Unit are connected
over a direct link, disregard this procedure.
Note that if you are using a modem recommended by Electroline, contact the technical
support department for detailed modem setup procedures. The following procedure is
intended as a guideline for modem setup.
Follow the steps below to set up the modem that will be directly connected to the Control
Unit. Use the communication software running on your computer to set up the modem. See
your system administrator to set up the modem connected to the host computer.
To set up the modem directly connected to the Control Unit’s port:
1. Connect the male DB-25 end of the RS-232 cable to the modem. Connect the female
connector to an available port on the computer.
2. Plug one end of the power cord supplied with the modem into the modem’s power input.
Plug the other end into an AC power source.
3. Turn on the modem.
4. Run the computer’s communication software (for example, Windows 95 version of
HyperTerminal, Procomm, etc.).
5. Set up the modem. The Control Unit functions with the following parameters:
• ignore DTR
• no data compression
• no error correction
• hardware flow control
• set modem speed to the same setting as the modem-to-modem connection speed
(maximum: 38,400 bps; recommended: 9600 bps)
6. When the modem has been set up, turn off the modem and unplug the power cord from
the AC power source and from the modem.
7. Disconnect the RS-232 serial cable from the modem and the computer. The modem is
now ready to be installed on the Control Unit (see section 2.7.1). Make sure you use a
null modem cable for the modem-Control Unit connection. If you wish to now set up the
modem that will be directly connected to the host computer, do not disconnect the
RS-232 cable from the computer. Instead, disconnect only the modem. Reconnect the
cable to another modem that will be installed on the host computer, and see your system
administrator or contact Electroline’s technical support department before setting it up.