• Signalling System No. 7 (SS7) is a set of telephony signaling protocols developed in the 1970s that is used to setup and teardown telephone calls on most...
    31 KB (3,522 words) - 22:31, 31 December 2024
  • Thumbnail for Signalling block system
    Signalling block systems enable the safe and efficient operation of railways by preventing collisions between trains. The basic principle is that a track...
    22 KB (3,114 words) - 21:06, 15 March 2025
  • Thumbnail for Signal
    distributions as either point source signals (PSSs) or distributed source signals (DSSs). In Signals and Systems, signals can be classified according to many...
    30 KB (3,517 words) - 19:45, 14 April 2025
  • Thumbnail for Ring network
    "dual ring" networks include the ITU-T's PSTN telephony systems network Signalling System No. 7 (SS7), Spatial Reuse Protocol, Fiber Distributed Data Interface...
    7 KB (986 words) - 15:55, 14 August 2024
  • 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 1980...
    7 KB (962 words) - 09:05, 5 March 2025
  • in the widespread adoption of Signalling System No. 7 (SS7) in replacement of SS5. Telephones portal Signaling System No. 6 ITU-T Recommendation Q.140-Q...
    5 KB (521 words) - 20:03, 19 January 2025
  • INAP (category Signaling System 7)
    Application Part. It is the signalling protocol used in Intelligent Networking (IN). It is part of the Signalling System No. 7 (SS7) protocol suite, typically...
    3 KB (276 words) - 07:09, 9 February 2024
  • Thumbnail for Protocol stack
    Protocol Wars Recursive Internetwork Architecture Service layer Signalling System No. 7 Systems Network Architecture Wireless Application Protocol X.25 "What...
    7 KB (904 words) - 17:11, 29 March 2025
  • SS7 (redirect from SS-7)
    SS7 or SS-7 may refer to: Signalling System No. 7, a set of telephony signalling protocols SS-7 Saddler, the NATO reporting name of R-16 missile China...
    333 bytes (83 words) - 06:48, 13 December 2024
  • transfer part (MTP) of Signalling System No. 7. ITU-T Recommendation Q.702, Signalling data link. ITU-T Recommendation Q.703, Signalling link. ITU-T Recommendation...
    13 KB (1,461 words) - 15:45, 23 April 2024
  • Thumbnail for UK railway signalling
    The railway signalling system used across the majority of the United Kingdom rail network uses lineside signals to control the movement and speed of trains...
    67 KB (9,024 words) - 04:02, 3 February 2025
  • C7 (redirect from C-7)
    chord C7, CCITT (now ITU-T) (the European term for) Signalling System No. 7, a set of telecom signaling protocols C7, Nielsen viewership ratings that include...
    3 KB (446 words) - 11:10, 8 May 2024
  • 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
  • Service switching point (category Signaling System 7)
    the call can be handled. The service switching point uses the Signalling System No. 7 (SS7) protocols which are responsible for the call setup, management...
    2 KB (311 words) - 04:27, 2 March 2021
  • originally called party, regardless of call redirection; look inside a Signalling System No. 7 (SS7) ISDN User Part (IUP) initial address message (IAM) for this...
    2 KB (236 words) - 15:29, 14 April 2025
  • "ISO 10747". ITU-T Recommendation Q.711: Specifications of Signalling System No. 7Signalling connection control part (SCCP), International Telecommunication...
    5 KB (512 words) - 05:53, 2 November 2024
  • Thumbnail for European Train Control System
    railways outside of Europe. ETCS is the signalling and control component of the European Rail Traffic Management System (ERTMS). ETCS consists of 2 major parts:...
    154 KB (16,994 words) - 14:55, 19 April 2025
  • over Internet Protocol using the Generic Signalling Transport service specified in Q.2150.0, the signalling transport converter for SCTP specified in...
    7 KB (899 words) - 19:04, 9 November 2024
  • (ISDN) and Signalling System No. 7 (SS7). ISDN signaling is used primarily on trunks connecting end-user private branch exchange (PBX) systems to a central...
    7 KB (961 words) - 20:24, 4 September 2024
  • ISDN User Part (category Signaling System 7)
    (Integrated Services Digital Network) User Part or ISUP is part of Signaling System No. 7 (SS7), which is used to set up telephone calls in the public switched...
    19 KB (2,146 words) - 23:46, 25 April 2024
  • SIGTRAN (category Harv and Sfn no-target errors)
    CITEREFDryburgh2004 (help) Dryburgh, Lee; Jeff Hewitt (2004). Signalling System No. 7 (SS7/C7): Protocol, Architecture, and Services. Indianapolis: Cisco...
    7 KB (655 words) - 07:08, 2 October 2024
  • Signalling Connection Control Part (SCCP) subsystem numbers are used to identify applications within network entities which use SCCP signalling. In Global...
    2 KB (252 words) - 13:35, 11 October 2022
  • over the internet. Session module: as per directions from the Signalling System No. 7 (SS7) protocol stack's Mobile Application Part (MAP), it receives...
    5 KB (668 words) - 16:01, 8 March 2024
  • Ringing tone (redirect from Ringback signal)
    strict implementations of Signalling System No. 7 and the Customized Application of Mobile Enhanced Logic (CAMEL) signaling system. It may also be generated...
    14 KB (1,890 words) - 12:24, 16 April 2025
  • as Signalling System 7, which operate out-of-band on a separate data network. Because of the in-band transmission characteristic of MF signaling, the...
    6 KB (789 words) - 14:45, 20 January 2025
  • Railway signals in Germany are regulated by the Eisenbahn-Signalordnung (ESO, railway signalling rules). There are several signalling systems in use,...
    38 KB (5,481 words) - 07:28, 24 February 2025
  • Thumbnail for Signalling theory
    cheating could cause the signalling system to collapse. Every dishonest signal weakens the integrity of the signalling system, and so reduces the fitness...
    78 KB (9,237 words) - 01:27, 26 March 2025
  • Thumbnail for Railway signal
    to power signal equipment directly from mains power, with batteries only as backup. Absolute block signalling – British railway signalling scheme Automatic...
    27 KB (3,209 words) - 07:41, 27 April 2025
  • Thumbnail for Endocrine system
    The typical mode of cell signalling in the endocrine system is endocrine signaling, that is, using the circulatory system to reach distant target organs...
    39 KB (4,758 words) - 12:45, 6 May 2025
  • Thumbnail for Token (railway signalling)
    has media related to Tokens (railway signalling). Annett's key Radio Electronic Token Block Signalling block systems Single-line working Tyers Electric...
    30 KB (4,166 words) - 20:17, 13 April 2025