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Cable: it's not just for TV

1999; Institute of Electrical and Electronics Engineers; Volume: 36; Issue: 5 Linguagem: Inglês

10.1109/6.763204

1939-9340

Amitava Dutta-Roy,

Power Line Communications and Noise

Hybrid fiber-coaxial-cable systems can download data from the Internet at up to 30 Mb/s while also carrying multiple telephone channels and broadcast radio and TV signals-both analog and digital. This paper concentrates on single-access technology-cable modems. The cable modem packs the Internet data in the form of 10BASE-T frames, which are fed over an Rj-45 connection to the Ethernet network interface card (NIC) in a computer. The phone connections at the cable modem are for Internet protocol (IP) telephony, which has yet to come to residences in a big way. The connection between a cable modem and the Internet is packet-switched and so the link is always active. The standards for cable modems are discussed as is the sending of digitised voice over a packetised system.