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Integrator’s Reference Manual
1-2 80-99208-1 Rev. D
GSP-1620 Modem Overview
The QUALCOMM Globalstar GSP-1620 Satellite Data
Modem delivers reliable digital data communications
wherever Globalstar data service is available, using
QUALCOMM’s patented CDMA technology and the
Globalstar Communications System’s constellation of 48
low-Earth-orbit (LEO) satellites.
The GSP-1620 modem handles two kinds of data connections:
• Packet — over the Internet or other TCP/IP
packet-switched network
• Asynchronous — routed through the Public Switched
Telephone Network (PSTN) to a destination modem
Tip
QUALCOMM Globalstar packet data service has a lower overhead and
faster connection time than asynchronous data does. If a SCADA
application does not specifically need asynchronous data, it should use
packet data instead.
As an OEM, you directly integrate the GSP-1620 modem into
a market-specific product, to resell to a business/industrial
customer.
Note
For additional information about the Globalstar system, see Globalstar
Background, page A-1. For information about buying bulk modems from
QUALCOMM, contact QUALCOMM Globalstar Customer Service as
described in Appendix D.