Using DSL over twisted pair, television content is delivered using IPTV where the content is streamed to the subscriber in an MPEG-2 transport format. On an HFC network, television may be a mixture of analog and digital television signals. A set-top box (STB) is used at the subscriber's home to allow the subscriber to control viewing and order new video services such as "movies on demand". Access to the Internet is provided through ATM or DOCSIS, typically provided as an Ethernet port to the subscriber. Voice service can be provided using a traditional plain old telephone service (POTS) interface as part of the legacy telephone network or can be delivered using voice over IP (VoIP). In an HFC network, voice is delivered using VoIP.