When dialling a modern telephone, the telephone number is encoded and transmitted inband across the telephone line as a set of audible tones.
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Inband-Signaling — Inband Signaling, Frequenzwahlverfahren … Universal-Lexikon
Digital Signal 1 — (DS1, sometimes DS 1) is a T carrier signaling scheme devised by Bell Labs.[1] DS1 is a widely used standard in telecommunications in North America and Japan to transmit voice and data between devices. E1 is used in place of T1 outside North… … Wikipedia
Faxweiche — Eine Faxweiche, auch als Telefaxweiche oder Fax switch bezeichnet, ist eine entweder passive oder aktive Einrichtung an analogen Telefonanschlüssen. Die Faxweiche unterscheidet bei ankommenden Rufen zu Beginn der Verbindung zwischen… … Deutsch Wikipedia
Российский телефонный узел — РТУ Тип NGN софтсвич Разработчик МФИ Софт / ALOE Systems Операционная система GNU/Linux Debian Последняя версия 1.6.0 110 (21 мая 2012 … Википедия
Signalling (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… … Wikipedia
Squelch — In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver in the absence of a sufficiently strong desired input signal. Contents 1 Carrier squelch 2 Tone squelch and selective calling 2.1 … Wikipedia
Serial port — A male DE 9 connector used for a serial port on a IBM PC compatible computer. (Pinout) … Wikipedia
Blue 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… … Wikipedia
Telephone call — A telephone call is a connection over a telephone network between the calling party and the called party. Information transmissionA telephone call may carry ordinary voice transmission using a telephone, data transmission when the calling party… … Wikipedia
Diameter (protocol) — Internet protocol suite Application layer BGP DHCP DNS FTP HTTP … Wikipedia
