Controls whether modem selection will rely on the Area property configured for Serial Port tags.
If set to 1, UseSerialAreaInModemCall forces calls to a remote RTU site to use only modems with an area property matching that of the serial port tag. The benefit is that a voice modem, used for the Alarm Notification System and configured without an area property, would not be used for data calls.
If set to 1 and there is no modem with an area matching the serial port, then the call will simply be canceled.
If UseSerialAreaInModemCall is set to "0", the area configured for serial port tags has no bearing on modem calls. (This is the default, for backwards compatibility issues).
Section: System
Default: UseSerialAreaInModemCall = 0
