Fibocom G510 - CGCLASS, GPRS Mobile Station Class

G5/G6-Family AT Commands User Manual Page
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For the simplest MTs, and for backwards compatibility with existing communications software, it is
possible to control access to the GPRS using existing modem-compatible commands. This "modem
compatible" mode of operation is described below.
12.2.1+CGCLASS, GPRS Mobile Station Class
This command is used to set the Module to operate according to the specified GPRS mobile class. If the
requested class is not supported, an ERROR or +CME ERROR response is returned. Extended error
responses are enabled by the +CMEE command.
Command
Syntax
Response/Action
Remarks
Set
AT
+CGCLASS=<cl
ass>
OK
or:
+CME ERROR: <err>
Set GPRS mobile class
Read
AT +CGCLASS?
+CGCLASS: <class>
OK
The Read command returns the
current GPRS mobile class.
Test
AT
+CGCLASS=?
+CGCLASS: (list of
supported <class>s)
OK
The Test command is used for
requesting information on the
supported GPRS mobile classes.
Note: Issuing GPRS actions over a poor-quality connection may cause protocol errors and harm data
validity. To prevent these problems, Module is equipped with a protection mechanism that confirms GPRS
signal strength before issuing GPRS network-related commands.
The following table shows the +CGCLASS parameters.
<Parameter>
Description
<class>
String parameter that indicates the GPRS mobile class:
B meaning mobile class B
Example:
AT+CGCLASS=?
+CGCLASS: (“B”)
OK
Note: If a SIM card without GPRS allowance is used:
AT+CGCLASS=?