Westermo GDW-11 - Manual (Page 225)

GPRS commands 225 6615-2220
+CGDATA – Enter data state
Description:
This command causes the MT to perform the necessary actions to set up communica-
tion 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.
NOTE:
This command has the same effects as ATD*99#.
If a GPRS PPP session is already running, the setting of a CSD (GSM data call) is not sup-
ported.
Syntax:
AT+CGDATA=[<cid>]
Response Syntax:
AT+CGDATA=?
+CGDATA
AT+CGDATA=?
+CGDATA
Parameters:
<cid>
A numeric parameter that specifies a particular PDP context definition.
Command example Possible responses Note
AT+CGDATA=1 CONNECT