PioneerPOS G24-LC 用户手册
Chapter 3: AT Commands Reference
April 15, 2008
G24-L AT Commands Reference Manual
3-231
+CGCLASS, GPRS Mobile Station Class
This command is used to set the G24-L 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.
If the requested class is not supported, an ERROR or +CME ERROR response is returned.
Extended error responses are enabled by the +CMEE command.
Note:
Issuing GPRS actions over a poor-quality connection may cause protocol errors and harm
data validity. To prevent these problems, G24-L is equipped with a protection mechanism
that confirms GPRS signal strength before issuing GPRS network-related commands.
data validity. To prevent these problems, G24-L is equipped with a protection mechanism
that confirms GPRS signal strength before issuing GPRS network-related commands.
The following table shows the +CGCLASS parameters.
Example
AT+CGCLASS=?
+CGCLASS: (B)
OK
Note:
If a SIM card without GPRS allowance is used:
AT+CGCLASS=?
+CGCLASS: (CC)
//Note that CC is a not supported value.
Command
Type
Syntax
Response/Action
Remarks
Read
AT +CGCLASS?
+CGCLASS: <class>
OK
or:
+CME ERROR: <err>
The Read command returns the current
GPRS mobile class.
GPRS mobile class.
Test
AT +CGCLASS=?
+CGCLASS: (list of
supported <class>s)
supported <class>s)
OK
or;
+CME ERROR: <err>
The Test command is used for requesting
information on the supported GPRS
mobile classes.
information on the supported GPRS
mobile classes.
Table 3-152: +CGCLASS Parameters
<Parameter>
Description
<class>
String parameter that indicates the GPRS
mobile class:
B
mobile class:
B
Class B