At Java Open Framework (Ajof); At Commands; Mobile Engine Status; Voice Call Handling - Siemens TC45 User Manual

TC45 TC45 JAVA User's Guide
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6 AT Java Open Framework (AJOF)

6.1 AT Commands

The TC45 AT Command Set [4] contains all of the standard AT commands needed to ope-
rate a GSM/GPRS mobile. Please note that no fax commands are supported when the TC45
is operated in the Java environment. Simply issuing individual AT commands can control the
TC45 module. See the "AT Command Set" to learn more about AT commands. The AT Java
Open Framework allows an application to be built without dealing with individual AT
commands. This framework sits on top of the AT command API.
The AT commands have been divided into six functional areas. Each area is represented as
a package. Documentation for the methods of each area and the AT commands covered by
these methods can be found in ...\Siemens\SMTK\TC45\AJOF\doc\index.html, [10].
Extensions are possible to this framework. The Java tutorial in Chapter 11 gives examples
on how to use this framework.

6.1.1 Mobile engine status

This area abstracts AT commands which affect the ME status, either by setting or returning
device parameters. The methods supplied in this category are mostly query methods. Most
of the methods in this category can be called regardless of the ME's current status. The
values set by these methods remain valid after the method call is finished.

6.1.2 Voice call handling

This category provides the methods for the handling of voice calls. Some of these methods
can only be executed successfully when the module is in a particular state.

6.1.3 CSD call and GPRS connection handling

Similarly to the voice call handling methods, this category provides methods for handling
GPRS connections and CSD calls.

6.1.4 Short Message Service

There are two formats, text and PDU, for sending short messages. The developer can
create messages of both formats, however, AJOF handles SMs internally in the PDU format.
With this framework, sending a short message should be as simple as writing a string to the
screen. The methods provided do all the appropriate conversions for reading or preparing an
SM. These conversions are transparent to the application programmer.
TC45_JAVA User's Guide_V02 Page 34 of 72 30.06.2003