3.5
Pocket AL I/O QB Configuration
3.3.5. Search for GSM network
The user can verify the operator used by the GSM module and the signal quality by sending a message to Pocket AL I/O QB. The
search for the GSM network can be executed at any time.
The message to Pocket AL I/O QB must have the following format:
#GSM#
When Pocket AL I/O QB will be asked for a search of the GSM network, it will return the following information:
1. ID
2. GSM operator of the SIM
3. Signal quality with 3 values:
Excellent
Good
Bad
4. Eventual indication of roaming
Example of GSM network status forwarding
GSM network status
HOME
VODAFONE
GOOD
ROAMING
FORCING THE GSM OPERATOR
In the factory configuration Pocket AL I/O QB automatically registers to the GSM operator. If the device is installed next to the state
border, it may register in roaming to a foreign GSM operator.
To verify this situation the user will check the Status and Power leds and he will send the #GSM# command.
In case of roaming registration you can force the operator with the fllowing command:
#GSM,operator code#
In this case the operator code is made of 5 digits and it corresponds to the univocal operator code assigned to each world-wide
operator, for Italy it is:
22201 per TIM – 22210 per Vodafone – 22288 per WIND.
Pocket AL I/O QB is also enabled to accept codes different from the Italian ones.
In case the device registers to the operator with the above mentioned sequence, then the device will go on operating regularly.
Otherwise if the device fails in registering to the operator, Pocket AL I/O QB will restore the automatic registration and if newly
registered in roaming, it will be signalled by the Staus led.
Eventual black-out or power off will not cancel the configuration. At power on the device will start with the previously inserted
configuration.
3.3.6. Device reboot configuration
During its standard operation Pocket AL I/O QB can remain on and registered to the GSM network for several days without using
any GSM service. In these cases the GSM operator may disable the device from the GSM cell to which it is registered (ETSI
070905) cutting off Pocket AL I/O QB. For this reason Pocket AL I/O QB makes an automatic search of the GSM network. It is
also possible to set the periodical update for the registration to the GSM network.
#REBOOT# It forces a reboot of the GSM module in order to make a new registration.
#REBOOT,x# Periodical reboot of the GSM module in order to make a new GSM registration.
x = 0 disabled function ; x between 1 and 65535 minutes
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