Cable Broadband History

Cable broadband internet system refers to an advanced broadband provision standard that clearly transcends the ADSL (asymmetric digital subscriber line) broadband network in the fixed-line broadband UK internet sector. The cable broadband betters the ADSL versions in download speeds as well as signal speed security over longer distances.

If broadband internet has been in prominence for more than a decade with its various forms, a network solutions company had developed and demonstrated the first fast asymmetrical cable broadband modem in the year 1990. The networking firm, Hybrid Networks that eventually patented the modem fastidiously maintained an insight that an intensely asymmetrical data communications would be adequate for satisfying users remotely connected to an otherwise fully symmetric fast data communications network.

The significance of this insight was that the provision of greater speeds in the upstream direction was highly expensive, while the CATV (cable television infrastructure) systems were already providing greater speeds in the upstream direction. Besides, it also found out a crucial fact that the downstream and upstream communications could co-exist on different or the same communications media using a number of protocols functioning in each direction for establishing a closed loop data communications system.

The protocols and speeds engaged in each direction were quite different. If the earliest data communications systems engaged the PSTN (public switched telephone network) for the return path, for the very reason that only a handful of cable systems were effectively bi-directional. Eventually, systems started using CATV for the downstream as well as the upstream path. Incidentally the architecture of the Hybrid Networks has been engaged in most of the cable broadband modems presently.

After a series of innovations and advancements an interoperable and open cable broadband modem specification was developed by a consortium of the cable operators of the US, called MCNS in the late nineties. The technologies from a couple of dominant proprietary cable systems of the time were essentially combined by the group, which was all about stripping the physical layer off the CDLP system of Motorola alongside LANcity system’s MAC layer. Hence was formed the DOCSIS versions which are virtually used by all cable modems today.

In the United Kingdom, commercial cable broadband networking was pioneered by the leading internet service provider Virgin Media that has successfully used its cables to transmit internet, television and phone signals. Later, when the government of the United Kingdom started pondering over the digital telecommunications boom in the country, cable broadband technology was given high priority.

According to this, BT has already started rolling out a pan-UK fibre optic cable broadband network under the auspices of the next generation broadband rollout. Although, BT is at present rolling out the largest cable broadband network in the UK, Virgin Media provides the fastest broadband package with up to 50Mbps connection speeds.

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