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Integrator’s Reference Manual
5-22 80-99208-1 Rev. D
Data Rate and Throughput
The GSP-1620 modem offers full duplex transmit and receive
at a Data port rate of 9600 bps. Discounting packet data
overhead bits, the measured effective “user” throughput (that
is, customer data) averages 7400 bps for packet data.
Networking Software and PPP Sessions
The modem uses PPP as the transport mechanism for data
packets. Standard networking software establishes,
manages, and tears down the PPP session. For example, the
networking software is compatible with Dial-Up Networking
(TCP/IP and PPP protocols) on Windows 95/98/NT/2000.
When you develop embedded SCADA applications, you can
use off-the-shelf protocol stacks or write your own. Any
standard RFC 1661 or RFC 1662 compliant stack should
work.
Interoperability with Different Operating Systems
The GSP-1620 modem uses standard networking software to
establish, manage, and tear down the PPP session. The
modem has been tested with the following standard operating
systems:
• Windows 95/98/2000
•Windows NT
•Macintosh OS
• UNIX/Linux
Note
For Windows 2000, a possible software driver problem exists. For more
information, contact QUALCOMM Globalstar Customer Service, as
described in Appendix D, Product Support.