Java User’s Guide

8.4 Short Message Format

s

Table 10: Parameters and keywords

Parameters

Max. Length AT

Keyword SM

Install/update

delete

 

 

 

 

 

Ignore SM PID

--

--

--

--

 

 

 

 

 

Hide HTTP authentica-

--

--

--

--

tion parameters

 

 

 

 

 

 

 

 

 

The length of the string parameters in the AT command is limited (see Table 10), the length in the SM is only limited by the maximum SM length.

The minimum set of required parameters depends on the intended operation (see Table 10). “optional/P” indicates that this parameter is only necessary when a POST result is desired.

8.4Short Message Format

An OTAP control SM must use a Submit PDU with Class1, PID $7d and 8 bit encoding. As a fallback for unusual network infrastructures the SM can also be of Class0 and/or PID $00. The content of the SM consists of a set of keywords and parameter values all encoded in ASCII format. These parameters can be distributed over several SMs. There is one single keyword to start the OTAP procedure. For parameters that are repeated in several SMs only the last value sent is valid. For example, an SM could look like this:

Install operation:

First SM:

OTAP_IMPNG

PWD:secret

JADURL:http://www.greatcompany.com/coolapps/mega.jad

APPDIR:a:/work/appdir

HTTPUSER:user

HTTPPWD:anothersecret

Second SM:

OTAP_IMPNG

PWD:secret

BEARER:gprs

APNORNUM:access.to-thenet.net

NETUSER:nobody

NETPWD:nothing

DNS:192.168.1.2

START:install

Delete operation:

OTAP_IMPNG

PWD:secret

APPDIR:a:/work/appdir

START:delete

The first line is required: it is used to identify an OTAP SM. All other lines are optional and their

order is insignificant, each line is terminated with an LF: '\n' including the last one. The key- words, in capital letters, are case sensitive. A colon separates the keywords from their values.

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2008-02-25

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Siemens AC65, TC65, XT75, XT65 manual Short Message Format, Install operation, Delete operation

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.