The terms broadband or broadband-like are used in different contexts. They can refer to services, networks, components and transmission paths. The term has undergone a change in recent years with regard to the data rate in the connection area with which end users can be connected to the networks.
- The previously used term broadband dates back to the 1980s and was used for special LAN concepts. At that time, a broadband network was a network configuration in which several signals could be transmitted simultaneously in different frequency ranges by modulation. A broadband concept still in use today is the broadband cable network in which many television channels are available.
- The term broadband was and is also used in the service offering. Services used to be referred to as broadband if they required a bandwidth that was larger than the voice band. This included all moving image services such as video and streaming media broadband, but also audio. This broadband definition has long been outdated in terms of saying that such a frequency band must be larger than the frequency band used in telephony.
- In transmission systems, broadband is when they transmit several independent signals in multiplex technology over one cable. Which multiplexing method is used is not specified.
- In connection technology, the term broadband stands for high data rates that are made available to the end user. Years ago, DSL methods used 1 Mbit/s or 2 Mbit/s, but now we are talking about higher data rates of 50 Mbit/s and more, as supported by VDSL, passive optical networks( PON) and radio technologies such as Long Term Evolution( LTE), WiMAX or those in the frequency range of the digital dividend, which can also be used to transmit digital TV and HDTV.