out-of-band signaling
41World Wide Telecom Web — (also called as Spoken Web or Telecom Web) is an initiative to create an alternate web for the under privileged. It could help bridge the digital divide by bringing the benefits of the information revolution to the billions of underserved people… …
42Multi-frequency — In telephony Multi Frequency (MF) is an outdated, in band signaling technique. Numbers were represented in a two out of five code for transmission from a Multi Frequency Sender, to be received by a Multi frequency receiver in a distant telephone… …
43Selective calling — SECAL redirects here. For the French wine grape also known as Secal, see Jurançon (grape). In a conventional, analog two way radio system, a standard radio has noise squelch or carrier squelch which allows a radio to receive all transmissions.… …
44Signalling (telecommunications) — In telecommunication, signalling (UK spelling) or signaling (US spelling) has the following meanings: *The use of signals for controlling communications. *In a telecommunications network, the information exchange concerning the establishment and… …
45Conventional PCI — PCI Local Bus Three 5 volt 32 bit PCI expansion slots on a motherboard (PC bracket on left side) …
46Peripheral Component Interconnect — Infobox Computer Hardware Bus name = PCI fullname = peripheral component interconnection caption = Five 5V 32 bit PCI expansion slots on a motherboard invent date = July 1993 invent name = Intel super date = 2004 super name = PCI Express width =… …
47Blue box (phreaking) — An early phreaking tool, the blue box is an electronic device that simulates a telephone operator s dialing console. It functions by replicating the tones used to switch long distance calls and using them to route the user s own call, bypassing… …
48Universal asynchronous receiver/transmitter — A universal asynchronous receiver/transmitter (usually abbreviated UART and pronEng|ˈjuːɑrt) is a type of asynchronous receiver/transmitter , a piece of computer hardware that translates data between parallel and serial forms. UARTs are commonly… …
49Continuous Tone-Coded Squelch System — In telecommunications, Continuous Tone Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two way radio communications channel. It is sometimes called tone squelch. Where more… …
50Таблица сетевых протоколов по функциональному назначению — Таблица сетевых протоколов по функциональному назначению  содержит список всех существующих (а также существовавших в прошлом) протоколов, имеющих отношение к компьютерным сетям (сетевые протоколы). Сетевой протокол  набор правил,… …
