Java User’s Guide

12.2 Execution Control

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12.2Execution Control

The Java environment of the ME supports two modes.

Unsecured mode:

The device starts all Java applications (MIDlets).

Secured mode:

A condition for the secured mode of the device is the existence of a certificate inside of the module.

The customer can activate the secured mode of the device. To do so, the customer sends a root certificate (x.509 certificate) and the command Switch ON Security Mode to the device (over an AT Interface). The device changes from unsecured mode to the secured mode. From this time the module will only start Java applications with a valid signature. In addition, the device will only accept special commands from the customer if they are marked with a signature. The device examines each command with the public key of the customer root certificate.

The secured mode supports a simple protection domain concept, providing a domain for unsigned MIDlets. If this domain (domain for untrusted MIDlets) is active, then an unsigned MIDlet is assigned to this domain and has only limited access to the Java-API. The untrusted domain is activated by use of Java Security Command Switch ON Untrusted Domain (see Section 12.5.3).

untrusted domain:

-HTTP-Connection is permitted

-TCP/IP-Socket Connection is permitted

Standard behavior of the module:

Siemens supplies modules with unsecured mode as the default configuration. Insert the certificate:

-The module changes into the mode “trusted” for MIDlet execution. “Untrusted Domain” is OFF.

-HTTPS certificate verification is OFF.

-MES is ON.

Remove the certificate:

-The module changes into the mode “untrusted” for MIDlet execution.

-HTTPS certificate verification is OFF

-MES is ON.

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2008-02-25

Confidential / Released

 

 

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Siemens XT65, TC65, AC65, XT75 manual Execution Control, Unsecured mode, Secured mode, Standard behavior of the module

AC65, XT65, XT75, TC65 specifications

The Siemens TC65 is a compact and powerful GSM/GPRS module designed for a wide range of mobile communication applications. With its robust features, the TC65 perfectly meets the growing demands for connectivity in various industries, including automotive, telematics, and industrial automation.

A standout feature of the TC65 is its compact size, allowing it to be easily integrated into various devices without compromising on performance. The module supports GSM (Global System for Mobile Communications) and GPRS (General Packet Radio Service), providing reliable and efficient voice and data transmission.

One of the key technologies incorporated in the TC65 is its integrated TCP/IP stack, which allows for seamless internet connectivity and enables application developers to create IoT solutions with ease. This capability is essential for remote monitoring, data logging, and other applications that require continuous data exchange.

The TC65 also boasts extensive multimedia capabilities, including support for SMS, MMS, and voice calls. This makes it suitable for applications that require not only data transmission but also communication features. Additionally, it supports various codecs for voice compression, ensuring high-quality audio in voice applications.

Enhanced security features are another highlight of the TC65. It incorporates comprehensive security protocols to safeguard data transmission, making it suitable for sensitive applications in finance, healthcare, and other critical sectors. The module also includes an integrated SIM application toolbox that supports the development of secure and customizable applications.

For developers, the TC65 offers an easy-to-use software development kit (SDK), simplifying the process of application development. This means that businesses can quickly create and deploy solutions tailored to their specific needs.

The module operates across a wide voltage range and is designed to tolerate challenging environmental conditions, making it ideal for industrial use. It supports various interfaces, including UART, GPIO, and I2C, enabling it to connect with a variety of peripherals and sensors, thus expanding its usability.

In summary, the Siemens TC65 combines compact design, versatile communication capabilities, advanced security features, and developer-friendly resources, making it an excellent choice for anyone looking to implement reliable and sophisticated GSM/GPRS communication in their applications. The TC65 is a valuable asset in the evolving landscape of connected devices and IoT solutions.