AT Commands Reference Manual - wireless netcontrol GmbH

Chapter 3: AT Commands Reference
GPRS/EDGE/UMTS
GPRS Commands
+CGCLASS, GPRS Mobile Station Class
This command is used to set the H24 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
Type Syntax Response/Action Remarks
Read AT +CGCLASS? +CGCLASS:
OK
or:
+CME ERROR:
Test AT +CGCLASS=? +CGCLASS: (list of
supported s)
OK
or;
+CME ERROR:
The Read command returns the current
GPRS mobile class.
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, H24 is equipped with a protection mechanism
that confirms GPRS signal strength before issuing GPRS network-related commands.
The following table shows the +CGCLASS parameters.
Table 3-187: +CGCLASS Parameters
Description
String parameter that indicates the GPRS
mobile class:
A Class A
B Class B
C Class C
Example
AT+CGCLASS=?
+CGCLASS: (A)
OK
Note: If a SIM card without GPRS allowance is used:
AT+CGCLASS=?
+CGCLASS: (CC) //Note that CC is a not supported value.
April 15, 2010 H24 - AT Commands Reference Manual 3-285