Installation guide

Connecting to the Control Console 1-11
SP201-SA™ Customization and Maintenance Guide
2 On the remote side, use a serial RS232 straight-through female-DB9-
to-male-DB25 cable to connect an external modem to the temporary
control terminal’s DB9 COM port.
3 Set the following mandatory modem setup requirements.
Mandatory Modem Setup Requirements
•Auto Answer
• Serial Port data rate must be fixed at 9600 bps
• Data Terminal Ready (DTR) must be ignored or overridden
• Flow control must be disabled
• Data Compression must be disabled
• Error control must be disabled
• Connect speed must be set to 9600 bps
• Command echo must be disabled
• Result codes must be suppressed
Note: To set the external modem up, use the modem’s physical
switches and/or software commands, as indicated in the modem
manufacturer’s instructions.
Section 1.5.2.1, Sample Settings for an External Modem, provides one
example of switches used for modem setup and software
commands used for modem configuration.
4 Configure each modem for communication across the network.
Note: You may need to temporarily change the modem’s settings
so that you can configure it. Then, for operation, set the switches
back to the mandatory modem setup requirements.
5 After the modems have been configured, you need to connect the
remote modem to a SignalPath device. Disconnect the remote
terminal from the remote modem. Then do one of the following for
the remote modem: