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Technology - Tele informatics

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12. Teleinformatics

Definition of Basic Concepts

The type of transmitted information determines the basic characteristic of transmission, which is divided into the following categories:

Data transmission – Systems have different requirements on data interfaces and have, therefore, also different requirements on transmission parameters.

Image transmission – Systems have high requirements on a quality physical layer. Single applications in teleinformatics have different requirements on dynamics of processing and can, therefore, be divided into the following groups:

Static processing of information – This expresses that information is not used for on-line applications but is only used for a long-term description of the examined system. These applications will not have any requirement on timely delivery of information into the center – therefore, common telecommunication tools can be used (SMS, messages, Internet).

Dynamics processing of information – This means that information is used on on-line equipment. High level of availability of the telecommunication environment has to be secured for transmission of this information (in both directions). Therefore, construction of special city networks with high availability can be seen in Europe that will secure a telecommunication environment with a sufficient level of quality (they secure an integrated transmission of information). Single nodes of these networks are placed as close as possible to given applications. Creation of telecommunication environment has to guarantee requirements of users on availability of information and its safe and reliable transmission from the point of collection to the point of processing. These concepts can be defined:

Transmission availability – Expresses time, during which it is permissible that the teleinformatics service is out of operation. The general availability can be expressed as a sum of set of availability of single parts of the teleinformatics application. For example, availability of transmission systems (redundancy of channels), availability of service (rapidity of repairs) and availability of the physical layer (suitable systems architecture) can be monitored for a telecommunication environment.

Transmission security – Expresses level of security of transmitted information. This can be solved either by means of interface software for single applications or by constructing an own permanent telecommunication network or, in case of radio tools by means of a security protocol of the transmitted message.

Transmission reliability – Expresses reliability of single parts of the transmission chain and is in direct relation with the availability concept. The transmission reliability includes reliability of single devices, reliability of the physical layer, quality of execution of technologies but also resistance of selected technical tools against disturbance (EMC, EMS).

Basics concepts for creation of architecture of the teleinformatics system are:

Integrated telecommunication transmission – Voice, image and data are transmitted together within a single telecommunication environment (ATM systems). The solution affects input investment costs and subsequent operation costs.

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