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Developing Modem Applications
80-99208-1 Rev. D 5-31
Figure 5-3. Asynchronous Data Call Components
Like most modems, the GSP-1620 modem allows you to
customize asynchronous data connections, data compression,
and so on. For details, see Chapter 6, AT Command Reference.
Note
For a comparison of asynchronous and packet data, see Table 5-1 on
page 5-4. For information about packet data service, see Using Packet
Data on page 5-21.
Satellite
GSP-1620
Modem
SCADA Terminal
Control Port
(modem AT commands)
Data Port
DTE
DCE
Tx
Rx
Outdoor Antenna
(running your
application software)
Interface Port
(Data or AT commands)
Globalstar
Gateway
Server
Host
PSTN
Gateway IWF Modem
Host Modem
(or modem bank)
(HOST end)
(REMOTE end)