• Line signaling is a class of telecommunications signaling protocols. Line signaling is responsible for off-hook, ringing signal, answer, ground start...
    2 KB (254 words) - 20:16, 4 September 2024
  • message. Out-of-band signaling has been used since Signaling System No. 6 (SS6) was introduced in the 1970s, and also in Signalling System No. 7 (SS7) in...
    7 KB (962 words) - 09:05, 5 March 2025
  • of in-band signaling system are the Signaling System No. 5 (SS5) and its predecessors, and R2 signalling. Separating the control signals, also referred...
    9 KB (1,196 words) - 15:52, 24 December 2024
  • signaling (RBS) is a scheme to provide maintenance and line signaling services on many T1 digital carrier circuits using channel-associated signaling...
    3 KB (439 words) - 13:16, 21 December 2024
  • Thumbnail for E and M signaling
    E and M signaling is a type of supervisory line signaling that uses DC signals on separate leads, called the "E" lead and "M" lead, traditionally used...
    7 KB (1,036 words) - 20:18, 4 September 2024
  • Line level is the specified strength of an audio signal used to transmit analog sound between audio components such as CD and DVD players, television...
    14 KB (1,742 words) - 15:53, 26 August 2024
  • Thumbnail for Signaling of the New York City Subway
    currently uses automatic block signaling, with fixed wayside signals and automatic train stops. Many portions of the signaling system were installed between...
    129 KB (14,384 words) - 01:15, 21 April 2025
  • an example. This is contrasted with line signaling. Bosse, John G. van; Devetak, Fabrizio U. (2006-11-03). Signaling in Telecommunication Networks. John...
    794 bytes (54 words) - 19:40, 2 February 2024
  • Thumbnail for Diver communications
    Retrieved 31 August 2016. Staff (2016). "Visual Surface Signaling Device Styles". Signaling devices. PADI. Retrieved 13 September 2016. Parsons, Chris;...
    75 KB (8,711 words) - 14:12, 11 June 2025
  • 2600 hertz (category Telephony signals)
    signaling carrier systems operated in the standard telephony voice frequency range (300Hz to 3500Hz). They replaced direct current (D.C.) signaling on...
    7 KB (834 words) - 19:40, 4 September 2024
  • Dual-tone multi-frequency (DTMF) signaling is a telecommunication signaling system using the voice-frequency band over telephone lines between telephone...
    19 KB (2,098 words) - 02:52, 29 May 2025
  • In telephony, single-frequency signaling (SF or SF tone) is line signaling in which dial pulses or supervisory signals are conveyed by a single-frequency...
    3 KB (434 words) - 17:28, 13 September 2024
  • call via a telephone trunk. It is suitable for signaling on analog as well as digital circuits. R2 signaling specifications were first published by the International...
    11 KB (1,226 words) - 22:00, 22 December 2024
  • Thumbnail for Signal
    alert other animals of food. Signaling occurs in all organisms even at cellular levels, with cell signaling. Signaling theory, in evolutionary biology...
    30 KB (3,517 words) - 19:45, 14 April 2025
  • Digital Signal 1 (DS1, sometimes DS-1) is a T-carrier signaling scheme devised by Bell Labs. DS1 is the primary digital telephone standard used in the...
    15 KB (2,102 words) - 22:13, 25 November 2024
  • Thumbnail for Analog telephone adapter
    ringing generator, DC power, caller ID data and other standard telephone line signaling (known collectively as BORSCHT) to the telephone connected to a modular...
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  • The Signaling System No. 5 (SS5) is a multi-frequency (MF) telephone signaling system that was in use from the 1970s for International Direct Distance...
    5 KB (521 words) - 20:03, 19 January 2025
  • Thumbnail for East–West MRT line
    identical signalling equipment and rolling stock. The East–West Line signalling systems have been upgraded along with the North–South Line, with both...
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  • the United States by the name Common Channel Interoffice Signaling in the 1970s for signaling between No. 4ESS switch and No. 4A crossbar toll offices...
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  • Thumbnail for MACD
    {\text{MACD line}}={\text{EMA}}_{12}-{\text{EMA}}_{26}} The signal line is then built as the exponential moving average of the MACD line: Signal line = EMA...
    13 KB (1,882 words) - 20:58, 19 June 2025
  • Supervision (telephony) (category Telephony signals)
    channel-associated signaling (CAS) in Digital Signal 1 (T1) trunks that use E and M signaling (earth & magneto, or ear & mouth signaling), there are only...
    8 KB (1,103 words) - 10:17, 21 February 2024
  • on-hook loop states, respectively. It is used primarily for subscriber line signaling. An extension of the protocol that adds disconnect supervision is often...
    5 KB (778 words) - 09:56, 21 February 2024
  • Thumbnail for Signalling control
    Moreover, the name of the signaling center itself may not be employed operationally in preference to the name of individual signaling workstations. This is...
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  • Thumbnail for North American railroad signals
    railroad signaling. For a more technical look at how signals actually work, see North American railway signaling. There are two main types of signaling aspect...
    53 KB (7,581 words) - 08:58, 17 February 2025
  • In telephony, multi-frequency signaling (MF) is a type of signaling that was introduced by the Bell System after World War II. It uses a combination of...
    6 KB (789 words) - 14:45, 20 January 2025
  • Thumbnail for Red Line (MBTA)
    Control (ATC) using audio frequency cab signaling. In 1985 the entire Red Line was converted to the new cab signal standard with any remaining interlocking...
    79 KB (7,791 words) - 23:03, 17 June 2025
  • starting from the Red Line commuter project and recent double tracking projects. However, in most rural areas, single track semaphore signals are still in use...
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  • between the analog domain of Ethernet's line modulation and the digital domain of link-layer packet signaling. The PHY usually does not handle MAC addressing...
    17 KB (1,648 words) - 17:36, 4 June 2025
  • for control networking (ANSI/CEA-709.1-B). Echelon's power line and twisted pair signaling technology were also submitted to ANSI for standardization...
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  • Thumbnail for Railway signalling
    Railway signalling (BE), or railroad signaling (AE), is a system used to control the movement of railway traffic. Trains move on fixed rails, making them...
    45 KB (5,951 words) - 12:15, 28 April 2025