Integrator’s Reference Manual
5-2 80-99208-1 Rev. D
Note
For complete reference information about all modem-supp ort ed AT
commands, including syntax, descriptions, default values, and results
returned, see Chapter 6, AT Command Reference.
Recommended Development Tools
The following tools are recommended for developing
GSP-1620 modem applications:
• A Windows computer — because the Modem Integrator’s
Kit CD-ROM contains code sam ples for Windows
• HyperTerminal (or any program that talks to a serial
port) for testing AT command strin gs
• Perl — because the code samples on the CD are written in
Perl; however, you can use whatever programming
language you choose (for example, C)
Tip
The CD-ROM in your Modem Integrator’s Kit contains code sampl es for
some typical modem application initialization strings.
SCADA Application Components
Working with a GSP-1620 modem, a SCADA application can
retrieve process control and alarm data automatically from
remote sites, using unmanned sensors to monitor operations
and initiate alert notifications.
Figure 5-1 shows the basic components of a SCADA or OEM
application that sits on top of the modem’s software, where:
• The modem serves as the DCE (dat a communications
equipment) at the remote site.
• Your SCADA application serves as the DTE (data
terminating equipment) at the remote site,
communicating with software in the mode m through AT
commands sent to either the modem’s Control or Data
ports.