Siemens MC55 - Manual (Page 251)

MC55 AT Command Set
10.5 AT+CGDATA
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MC55_ATC_V01.05 Page 251 of 469 2/10/04
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10.5 AT+CGDATA Enter data state
Syntax
Command Description
The test command is used for requesting information on the supported layer 2 protocols to be used between the
TE and MT.
The write command causes the MT to perform all actions which are necessary to establish communication
between the TE and the network using one or more GPRS PDP types. This may include performing a GPRS
attach and one or more PDP context activations. Commands following the
AT+CGDATA
command in the AT com-
mand line will not be processed by the MT.
If no
is given or if there is no matching context definition, the MT will attempt to activate the context with
PDP type IP and all other context parameters set to their default values (see
AT+CGDCONT
,
AT+CGQREQ
,
AT+CGQMIN
).
If the parameter is omitted, the layer 2 protocol is unspecified and PPP will be used.
If the write command is successful, the MT issues the intermediate result code CONNECT and enters V.25ter
online data state.
After data transfer is complete, and the layer 2 protocol termination procedure has completed successfully, the
command state is reentered and the MT returns the final result code OK.
If the
parameter value is unacceptable to the MT, the MT returns ERROR or +CME ERROR.
In the event of erroneous termination or a failure to start up, the command state is reentered and the MT returns
NO CARRIER, or if enabled +CME ERROR.
Test Command
AT+CGDATA=?
Response(s)
+CGDATA:
(list of supported s)
OK
Write Command
AT+CGDATA=
[ [, [, [,... ]]]]
Response(s)
CONNECT
NO CARRIER
ERROR
+CME ERROR
PIN ASC0 ASC1 MUX1 MUX2 MUX3
% % % % % %
Reference(s)
GSM 07.07