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2.4 LED INDICATOR
Through a led STATUS indicator you can control the status of GSM Bulk:
LED
STATUS
STATUS
OFF
ON
SLOW
BLINKING
FAST
BLINKING
GSM Bulk is ready to work only after it has been registered by the GSM network and with
a good quality signal.
To verify that GSM Bulk is ready for calls and SMS, follow these commands:
COMMAND
DESCRIPTION
AT+CPIN?
Verifies the presence of the SIM and the PIN code
AT+CREG?
Verifies the registration to the GSM network
AT+COPS?
Verifies the current GSM operator
AT+CSQ
Verifies the quality of GSM signal
[ For further information on the commands, see the chapters "Functional Examples" and
"AT Commands" ]
DESCRIPTION
No power supply
GSM Bulk is in one of the following status:
- network search mode;
- SIM card not present;
- PIN not inserted;
- emergency mode.
GSM Bulk detected by the GSM network
GSM Bulk connected to another device
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