What is Cable modem?
[[File:Cable.modem.arp.500pix.jpg|thumb|A cable modem]] A '''cable modem''' is a [[modem]] that can be used to deliver (usually [[digital]]) [[Information|data]] over [[Cable television]] [[infrastructure]]. Most of the time, cable modems are used to get access to the [[internet]] using the cable television [[network]]. To do this, cable modems use some [[Television channel|channels]] of the Cable TV network. A cable modem usually translates the [[signal (electrical engineering)|signal]]s it receives from [[Ethernet]] or [[USB]] into [[Radio frequency]] channels. With [[Voice over IP]] (VoIP) [[technology]], most cable modems can now also provide [[telephone]] lines. In terms of network technology, a cable modem is a [[network bridge]]. It operates at layer 2 of the [[OSI model]]. {{tech-stub}} [[Category:Computer hardware]]