Developing Modem Applications
80-99208-1 Rev. D 5-21

Position Location Determination

The GSP-1620 modem has a “get position” AT command,
AT$QCPLS, that provides a latitude and long itude location as
well as a confidence value.
This command has a parameter to select between getting the
current position (via making a new reques t) or returning the
last stored position:
• If you select the current p osition and you are NOT in a
call, the modem returns “ERROR.”
• If you select the stored position and there is no stored
position (you have never done a position request), the
modem returns “ERROR.”
Note
For more information, see Position Location Service ($QCPLS) on pag e
6-66.
Using Packet Data
Globalstar and the GSP-1620 modem offer di rect Internet
connectivity by bridging the “last thousand mile” air gap
using LEO satellites. This s ection details the capabilities
offered by the GSP-1620 modem for user connectivity and
packet data transmission.
The GSP-1620 modem lets the app lication device (DTE)
connected to the modem originate or receive a “packet data
call.” It establishes a PPP session, connects to the Internet,
and then establishes a sessio n with a host application at the
remote end.
Note
For a comparison of packet and asynchronous data, see Table 5-1 on
page 5-4. For information about asynchronous data service, see Using
Asynchronous Data on page 5-30.