voice-grade telephone line

См. также в других словарях:

• voice grade — A telephone line that is designed to transfer human voice. This is the way most phone lines are set up. However, the phone company also has data grade lines, which are supposed to make data communications easier. See also data grade …   Dictionary of telecommunications

• Voice over Internet Protocol — (VoIP, IPAEng|vɔɪp) is a protocol optimized for the transmission of voice through the Internet or other packet switched networks. VoIP is often used abstractly to refer to the actual transmission of voice (rather than the protocol implementing… …   Wikipedia

• Voice over IP — Digital voice redirects here. For the commercial service, see Comcast Digital Voice. Voice over Internet Protocol (Voice over IP, VoIP) is a family of technologies, methodologies, communication protocols, and transmission techniques for the… …   Wikipedia

• Plain old telephone service — (POTS) is the voice grade telephone service that remains the basic form of residential and small business service connection to the telephone network in most parts of the world. The name is a reflection of the telephone service still available… …   Wikipedia

• Business telephone system — Early model 464G Western Electric key telephone set A business telephone system is any of a range of a multiline telephone systems typically used in business environments, encompassing systems ranging from small key systems to large scale private …   Wikipedia

• Digital Subscriber Line Access Multiplexer — Siemens DSLAM SURPASS hiX 5625 A Digital Subscriber Line Access Multiplexer (DSLAM, often pronounced dee slam) is a network device, located in the telephone exchanges of the telecommunications operators. It connects multiple customer Digital… …   Wikipedia

• Digital subscriber line access multiplexer — A Digital Subscriber Line Access Multiplexer (DSLAM, often pronounced dee slam ) allows telephone lines to make faster connections to the Internet. It is a network device, located in the telephony exchanges of the service providers, that connects …   Wikipedia

• ISDN Digital Subscriber Line — (IDSL) uses ISDN based technology to provide a data communication channel across existing copper telephone lines at a rate of 144 kbit/s, slightly higher than a bonded dual channel ISDN connection at 128kbit/s. The digital transmission bypasses… …   Wikipedia

• Conversational Monitor System — Main articles: VM (operating system), CP/CMS, and History of CP/CMS The Conversational Monitor System (CMS; originally: Cambridge Monitor System ) is a relatively simple interactive computing single user operating system. CMS is part of IBM s VM… …   Wikipedia

• Business and Industry Review — ▪ 1999 Introduction Overview        Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …   Universalium

• telecommunications media — Introduction       equipment and systems metal wire, terrestrial and satellite radio, and optical fibre employed in the transmission of electromagnetic signals. Transmission media and the problem of signal degradation       Every… …   Universalium