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As traffic in technical transmission paths and data volume called, refers to the flow of data within technical and non-technical transmission paths . Whenever information is passed on, there is also data traffic in the broadest sense.

Non-electronic data traffic

In addition to the normal postal services (letter, parcel, parcel), the semi-electronic version of a telegram is also to be regarded as non-electronic data traffic. The latter is posted at the counter, transmitted via the telecommunications network and delivered by the receiving post office in printed form like a normal letter - albeit by messenger. All programs have in common that data is always exchanged.


Telecommunication is the sum of all telephone services, including fax and e-mail . Telecommunications are operated by Telekom and monitored by the Federal Network Agency. A further distinction is made between internal (intranet) and external data network (Internet).


Intranet is mostly a company-internal network in which different computers access a common (internal) server. This enables a rapid exchange of information within the company. It enables interconnected departments from different locations to work efficiently .


The Internet is a network in which people from all over the world can communicate with one another. This harbors the risk of being able to pretend to be someone else unnoticed or of not knowing the true whereabouts of the partner. The Internet has long since developed into an important means of communication / news medium of our time and is no longer a legal vacuum .

As data traffic or engl. In computers, traffic is the flow of data within computer networks . Traffic in the narrower sense describes the access to a page.

The data traffic volume of a one kilobyte file is almost doubled due to the subpages included. How many levels of a website are downloaded affects the transmission speed, which is expressed in thousands of bits per second (kbit / sec.). However, this depends on the type of data transfer and the Internet connection .

Websites are static or dynamic collections of information that are used for information purposes only, but do not offer the possibility of active participation (discussion). Their content varies as new posts are added at the top and older posts “push away”. However, these can still be called up in an archive at any time.

Internet forums enable several forum users to exchange information and ensure availability at any time. Messages (often called posts) can be read and answered not only immediately after they have been created, but at any time and from any access location. It is up to the forum operator which technology is allowed. According to the Teleservices Media Act, he must place an imprint that contains contact details for himself and his email address. Some forums also have a chat , in which users who are online at the same time but can sit in different places communicate with one another. In 2010, around 3.2 billion gigabytes of data traffic was generated in Germany.

See also: Internet # traffic

Access types

  • An analog connection without DSL is a connection in which the computer is connected to the TAE socket via a modem . If you are connected to a network provider, you can neither make nor receive calls at the same time (because the connection is then blocked).
  • With DSL, both the trunk line and the Internet are available instead of a line. To do this, the computer must be connected to a DSL modem. This in turn is connected to the DSL splitter, which divides the telephone and Internet connection into different frequency ranges. Telephoning and surfing at the same time are thus possible. The splitter is connected to the TAE socket.
  • An ISDN connection makes it possible to be connected to the network on the same lines at the same time, to operate a fax machine or to make calls via the normal exchange line (with two telephone numbers). DSL modems are available in different transmission rates .

A WLAN router enables access to Internet connections and networks through the use of a WLAN adapter. In many places, for example, in restaurants and bars, WLAN access is provided for a small fee. Service providers have WLAN finders in their software that detect open WLAN connections with a sufficient signal in the vicinity.

Use of terms and evaluation

The term is preferably used by Internet service providers for cost accounting. Internet service providers offer resources ready to transfer data, the costs to customers, so the end user (anglizistisch user called), are passed on. Most entry- level offers offer a free contingent (also free traffic or free volume ). The customer only pays for additional data traffic that exceeds this free volume. Sometimes, for the sake of simplicity, the term traffic is used instead of free traffic . There is also the option of paying an agreed price at which the amount of data actually used / converted and online time is insignificant ( DSL ) flat rate .

In particular, the term traffic is used both in the negative sense for data traffic that is considered superfluous, which primarily causes costs, and in a positive sense. Unwanted traffic is caused , for example, on websites by hotlinking .

Providers are the network providers for data traffic. A distinction must be made in the operating mode between an analog and a digital ( ISDN ) connection, which also affects the transmission speed .

Data protection and security

In data exchange via the Internet, data protection often falls by the wayside, especially if contact information is incorrectly given in plain text. These can be read out very easily - often improperly - by spy programs ( crawlers ) and used for dirty business ( UWG ). In order to protect the security of your own database from unauthorized access on the one hand, but also from the infeed of disruptive programs, regular, preferably automatic additions ( updates ) to the firewall and virus scanner driver databases used are required.


  • Dieter Conrads: Telecommunications. Basics - Procedures - Networks, 5th edition, Friedrich Vieweg & Sohn Verlag, Wiesbaden 2004, ISBN 3-528-44589-0 .
  • Wolfgang Elsässer: ISDN and local networks. Friedrich Vieweg & Sohn Verlagsgesellschaft mbH, Wiesbaden 1995, ISBN 978-3-322-83076-0 .
  • Jürgen Scherff: Basic course in computer networks. 2nd edition, Verlag Vieweg + Teubner, Wiesbaden 2010, ISBN 978-3-8348-0366-5 .
  • Hans Liebig, Thomas Flik, ​​Peter Rechenberg, Alexander Reinefeld, Hanspeter Mössenböck: The engineering knowledge . Technical computer science, Springer Vieweg, Berlin / Heidelberg 2014, ISBN 978-3-662-44390-3 .
  • Michael Sträubig: Project Guide Internet Practice. Friedrich Vieweg & Sohn Verlagsgesellschaft mbH, Wiesbaden 2000, ISBN 978-3-322-84952-6 .

Individual evidence

  1. Yearbook 2010 of the Federal Network Agency Archivlink ( memento of the original from June 25, 2011 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot /

See also

Web links