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Integrator’s Reference Manual
5-36 80-99208-1 Rev. D
Typical Modem Initialization Strings
Table 5-5 summarizes some typical GSP-1620 modem
initialization strings discussed in this chapter and Chapter 4.
For complete details about these and other initialization
strings, see Chapter 6, AT Command Reference.
Table 5-5. Sample Typical Modem Initialization Strings
To do this... Send these
commands or strings
Where to find more
information
Default all modem settings ATZ Reset to Default
Configuration (Z) on page
6-15
Make a packet data call ATD#777 Dial (D) on page 6-20
Make an asynchronous data
call
ATD<phone number> Dial (D) on page 6-20
Make a Markov test call ATD#627568 Dial (D) on page 6-20
Make a Loopback test call ATD#56672225 Dial (D) on page 6-20
Hang up a packet data call
and end dormant mode; or
hang up an asynchronous
data call
ATH Hook Control (H) on page 6-22
Hang up a packet data call
but leave dormant mode
active; or hang up an
asynchronous data call
ATH777 Hook Control (H) on page 6-22
Check modem status
(Globalstar service, signal
strength, registration,
current call state and so on)
AT$QCSTATUS Service Status ($QCSTATUS)
on page 6-62
Set up dormant mode (with a
20-second timeout value)
AT&C0
AT+CTA=20
DCE Received Line Signal
Detector Behavior (&C) on
page 6-16; Set Dormant Mode
Timeout Value (+CTA) on
page 6-49
Enable SMS Alerting AT$QCSMSA SMS Alert ($QCSMSA) on
page 6-57
Read SMS messages AT$QCSMSP SMS Print ($QCSMSP) on
page 6-52