Gprs Mobile Station Class +Cgclass - Multitech MMCModem GPRS (MTMMC-G) Reference Manual

GPRS Mobile Station Class +CGCLASS

Description:
The set command is used to set the modem to operate according to the specified GPRS mobile class. If
the requested class is not supported, an ERROR or +CME ERROR response is returned.
The read command returns the current GPRS mobile class.
The test command is used for requesting information on the supported GPRS mobile classes.
Values: <class>
Other values are reserved and will result in an ERROR response to the set command.
If the modem is GPRS attached when the set command is issued with a <class> = CC specified, a
GPRS detach request is sent to the network.
If the modem is GSM attached when the set command is issued with a <class> = CG specified, a GSM
detach request is sent to the network.
Class A is not supported.
Note:
Example of the Automatic Attachment (See Note Above):
AT+CGCLASS?
+CGCLASS: "B"
OK
AT+CGATT?
+CGATT: 0
OK
AT+CGCLASS="CG"
OK
AT+CGATT?
+CGATT: 0
OK
AT+CGATT=1
OK
AT+CPOF
OK
AT+CFUN=1
OK
AT+CGCLASS?
+CGCLASS: "CG"
OK
AT+CGATT?
+CGATT: 1
OK
Syntax: Command Syntax: AT+CGCLASS
Command
AT+CGCLASS= [<class>]
AT+CGCLASS?
AT+CGCLASS=?
AT+CGCLASS="CG"
Note: Enter GPRS Class C
mode
AT+CGCLASS="CC"
Note: Enter GMS mode
AT+CGCLASS="A"
Note: Chosen class not
supported
AT+CGCLASS=?
AT+CGCLASS?
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I)
A string parameter which indicates the GPRS mobile class (in descending order of
functionality)
A
Class A (highest)
B
Class B
CG
Class C in GPRS only mode
CC
Class C in circuit switched only mode (lowest)
During switch-On in CG class, the modem always performs an automatic GPRS attach (the
ATTACH-STATUS parameter of +WGPRS is ignored). But if the modem is not already GPRS-
attached when switching from B/CC class to CG class, then no automatic GPRS attach is
performed.
Possible Response(s)
OK
ERROR
+CGCLASS: <class>
OK
+CGCLASS: (list of supported <class>s)
OK
OK
OK
+CME ERROR: 150
+CGCLASS: ("CG","CC")
OK
+CGCLASS: ("CC")
OK
Chapter 15 – GPRS Commands
158