What is Broadband Internet
Broadband Internet refers to a data communication service that provides a connection to the World Wide Web through the use of a large band of frequencies over a telephone link. Because of the availability of a large bandwidth, the information carrying capacity of this link is much more than the traditional dial up connection. The data rates that are available on a broadband connection are 5 to 6 times faster than the traditional dial up connections.
Because of the high data rates involved, broadband allows the users to perform multiple tasks on the internet at the same time that were traditionally not possible in a dial up connection. For example:- One can browse the net while downloading an audio file along with using e-mail and messenger applications, all at the same time in a broadband connection without any significant delay.
Another feature of a broadband internet connection is that one can simultaneously use the telephone services and the data services at the same time. The data links are carried on high frequencies in a broadband connection while the voice links are carried on lower frequencies. These frequencies can be split up using a filtering device known as a splitter. The high frequencies are then fed in to the personal computer or a network terminal through a modem while the low frequencies are fed in to the telephone set.
A Broadband Internet Connection can be used in either a Bridging Mode or in an Always On mode. In the bridging mode, the user can connect or disconnect to the Internet by the use of a Connection Icon. This Icon is made by the use of ‘Create a New Connection’ wizard. The user needs to enter information about the user name and password provided to him by the ISP each time he connects in this mode. In the Always On mode, the user gets automatically connected to the internet when the modem is switched on. The Modem is internally programmed to connect to the internet and provides the ISP user name and password to the network administrator itself.
Broadband service is provided over the existing telephone lines by the Service Providers via looping the user connection link with the data servers in the Main Distribution Frame (MDF) of the Switching Centre. These servers are connected to the Web by very high speed Optical Fiber Cable links. The Internet Service provider also maintains a server system that dynamically allocates IP addresses to the users in the network.