Westermo GDW-11 - Manual (Page 237)

GPRS commands 237 6615-2220
+CGANS – Manual response to a network request for PDP
context activation
Description:
The execution command requests the MT to respond to a network request for GPRS
PDP context activation which has been signaled to the TE by the RING or +CRING:
unsolicited result code. The <response> parameter allows the TE to accept or reject the
request.
If <response> is 0, the request is rejected and the MT returns OK to the TE.
If <response> is 1, the following procedure is followed by the MT.
PDP context activation procedures take place prior to or during the PDP startup.
One <cid> may be specified in order to provide the values needed for the context acti-
vation request.
During the PDP startup procedure the MT has the PDP type and the PDP address pro-
vided by the network in the Request PDP Context Activation message.
If a <cid> is given his information must matching with the PDP type and PDP address in
the network request as follows:
… The PDP type must match exactly.
… The PDP addresses are considered to match if they are identical or if the address
in the context definition is unspecified.
If any of this information is in conflict, the command will fail.
The context is activated using the values for PDP type and PDP address provided by the
network, together with the other information found in the PDP context definition. An
APN may or may not be required, depending on the application.
If no <cid> is given, the MT will attempt to activate the context using the values for PDP
type and PDP address provided by the network, together with any other relevant informa-
tion known to the MT. The other context parameters will be set to their default values.
If the activation is successful, data transfer may proceed.
After data transfer is complete, and the layer 2 protocol termination procedure has com-
pleted successfully, the V.25ter command state is re-entered and the MT returns the final
result code OK
In the event of an erroneous termination or a failure to startup, 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. It is also an error to
issue the +CGANS command when there is no outstanding network request.
This command may be used in both normal and modem compatibility modes.