Siemens MC55 manual Mobile

MC55 AT Command Set

10.2 AT+CGANS

Note

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•If <response> is 1, the following procedure is followed by the MT:

If the <L2P> parameter value is unacceptable to the MT, the MT will return an ERROR or +CME ERROR response. Otherwise, the MT issues the intermediate result code CONNECT and enters V.25ter online data state.

A <cid> may be specified for use in the context activation request.

During the PDP startup procedure the MT has the PDP type and the PDP address provided by the network in the Request PDP context activation message. If this is in conflict with the information provided by a spec- ified <cid>, the command will fail. There will be no conflict, if the PDP type matches exactly and the PDP address given by the context definition for <cid> is empty or matches exactly with the address specified with the network PDP context activation message.

The context will be activated using the values for PDP type and address provided by the network, together with all 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 or if there is no matching context definition, the MT will attempt to activate the context using the values for PDP type and address provided by the network. The other parameters will be set to their default values (see AT+CGDCONT).

If activation is successful, data transfer may proceed.

After data transfer is complete, and the layer 2 protocol termination procedure has completed successfully, the V.25ter command state is reentered and the MT returns the final result code OK.

In the event of an erroneous termination or a failure to 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. It isalso an error to issue the AT+CGANS command when there is no pending network request.

The command may be used in both normal and modem compatibility modes.

MC55_ATC_V01.05	Page 246 of 469	2/10/04
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