Q What is Cable Modem?
One more way of accessing Internet currently being developed is use of cable modems. These require that you subscribe to a cable service as well as allow you two-way communication with the Internet at rates between 100K and 30 Mbps. Cable modem performs demodulation and modulation just like any other modem however it also has a tuner and filters to isolate Internet signal from other cable signals. Part of concern for use of cable modem is to formulate LAN adapters to allow multiple users to access Internet. A medium access control (MAC) standard for transmitting data over cable is being formulated by IEEE 802.14 committee.