line signaling

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• Line signaling — is a class of telecommunications signaling protocols. Line signaling is responsible for off hook, ringing signal, answer, ground start, on hook unidirectional supervision messaging in each direction from calling party to called party and vice… …   Wikipedia

• Signaling (telecommunications) — In telecommunication, signaling (signalling in British spelling) has the following meanings: the use of signals for controlling communications the information exchange concerning the establishment and control of a telecommunication circuit and… …   Wikipedia

• Signaling System No. 5 — CCITT5 [http://www.itu.int/rec/T REC Q.140 Q.180/en ITU T Recommendation Q.140 Q.180] Specifications of Signalling System No. 5] was a multi frequency (MF) telephone signalling system in use from the 1970s for International Direct Distance… …   Wikipedia

• Line 10, Beijing Subway — Beijing Line type = Rapid transit system = Beijing Subway status = Operational locale = Beijing, China start = Bagou end = Jinsong stations = 22 routes = ridership = opened = July 19, 2008 closed = owner = operator = Beijing Mass Transit Railway… …   Wikipedia

• Line code — An example of coding a binary signal using rectangular pulse amplitude modulation with polar non return to zero code …   Wikipedia

• Line Printing Terminal — IEEE 1284 Druckerkabel (Typ AB) Der veraltende IEEE 1284 Standard definiert eine parallele Schnittstelle zur bidirektionalen Übertragung von Daten zwischen PCs und unterschiedlichen Peripheriegeräten (Drucker, Fax, Scanner, Laufwerke etc.). Der… …   Deutsch Wikipedia

• In-band signaling — In telecommunications, in band signaling is the sending of metadata and control information in the same band, on the same channel, as used for data.TelephoneFor example, when dialing a modern telephone, the telephone number is encoded and… …   Wikipedia

• Single-frequency signaling — (SF) is line signaling (in telephony) in which dial pulses or supervisory signals are conveyed by a single voice frequency tone in each direction. SF and similar systems were used in 20th century carrier systems.An SF signaling unit converts DC… …   Wikipedia

• off-hook signaling —    1. With regard to line signaling, the condition indicating that a station is being used (line loop closed).    2. With regard to trunk signaling, off hook signaling in the forward direction exists after seizure of the trunk by the switching… …   IT glossary of terms, acronyms and abbreviations

• on-hook signaling —    1. With regard to line signaling, the condition indicating that a station is idle (line loop open).    2. With regard to trunk signaling, on hook signaling in the forward direction exists when the trunk is not being used. On hook signaling in… …   IT glossary of terms, acronyms and abbreviations

• E and M signaling — E M is a type of supervisory line signaling that uses separate leads, called the E lead and M lead, traditionally used in the North American telecommunications industry. There are different E M standards, with 8, 6, 4 and even 2 wires.Number of… …   Wikipedia