Moxa Technologies G2150I manual Enter Data State +CGDATA, Gprs Mobile Station Class +CGCLASS, 10-9

OnCell G2150I AT Command Set GPRS Commands

Enter Data State: +CGDATA

Description: This command causes the MT to perform the necessary actions to set up communication between the TE and the network. This may include performing a GPRS attach and one PDP context activation. If the <cid> value is not defined to the MT, it will return an ERROR or +CME ERROR response. Otherwise, the MT issues the intermediate result code CONNECT and enters V.25ter online data state. GPRS attachment and PDP context activation procedures may take place prior to or during the PDP startup if they have not already been performed using the +CGATT and +CGACT commands. If no <cid> is given, the MT attempts to activate the context with available information. The other context parameters are set to their default values (No APN, default QOS parameters, dynamic IP address requested). If the activation is successful, data transfer may proceed. After data transfer and layer 2 protocol termination procedure completion, the V.25ter command state is re-entered and the MT returns the final result code OK. In case of abnormal termination or start up, the V.25ter command state is re-entered and the MT returns the final result code NO CARRIER or, if enabled, +CME ERROR. Attach, activate, and other errors may be reported. This command may be used in both normal and modem compatibility modes.

Notes:

yThis command has the same effects than ATD*99***.

yIf a GPRS PPP session is already running, the setting of a CSD (GSM data call) is not supported.

Command syntax:

Command	Possible responses
AT+CGDATA=[<cid>]	CONNECT ERROR
AT+CGDATA=?	+CGDATA: OK
AT+CGDATA=?	+CGDATA: OK
AT +CGDATA=1	CONNECT

Defined values: <cid>: a numeric parameter that specifies a particular PDP context definition.

GPRS Mobile Station Class: +CGCLASS

Description: The set command is used to set the MT 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.

Command syntax:

Command		Possible responses
AT+CGCLASS= [<class>]		OK
		ERROR
AT+CGCLASS?		+CGCLASS: <class>
		OK
AT+CGCLASS=?		+CGCLASS: (list of supported <class>s) OK
AT +CGCLASS=“CG”		OK
Note: Enter GPRS class C mode
AT +CGCLASS=“CC”		OK
Note: Enter GSM mode
AT +CGCLASS=“A”		+CME ERROR: 150
Note: Chosen class not supported.
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