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  2. Trunking - Wikipedia

    en.wikipedia.org/wiki/Trunking

    Trunking in telecommunication originated in telegraphy, and later in telephone systems where a trunk line is a communications channel between telephone exchanges. Other applications include the trunked radio systems commonly used by police agencies.

  3. Channel-associated signaling - Wikipedia

    en.wikipedia.org/wiki/Channel-associated_signaling

    Channel-associated signaling (CAS), also known as per-trunk signaling (PTS), is a form of digital communication signaling.As with most telecommunication signaling methods, it uses routing information to direct the payload of voice or data to its destination.

  4. Trunked radio system - Wikipedia

    en.wikipedia.org/wiki/Trunked_radio_system

    NXDN Common Air Interface (CAI) was accepted at the meeting of the ITU-R (International Telecommunication Union Radiocommunications Sector) held in November 2016 and it has been added to Report M.2014-3, published in February 2017. It is an open, multi-vendor protocol widely adopted in mission-critical applications in Japan, USA and mainland ...

  5. Telephone exchange - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange

    Many terms used in telecommunication technology differ in meaning and usage among the various English speaking regions. For the purpose of this article the following definitions are made: Manual service is telephone service in which a human telephone operator routes calls as instructed by a subscriber with a telephone set that does not have a dial.

  6. Last mile (telecommunications) - Wikipedia

    en.wikipedia.org/wiki/Last_mile_(telecommunications)

    This is because retail telecommunications networks have the topology of "trees", with relatively few high capacity "trunk" communication channels branching out to feed many final mile "twigs". The final mile links, being the most numerous and thus the most expensive part of the system, as well as having to interface with a wide variety of user ...

  7. Interposition trunk - Wikipedia

    en.wikipedia.org/wiki/Interposition_trunk

    In telecommunications, the term interposition trunk has the following meanings: . 1. A single direct communication channel, e.g., voice-frequency circuit, between two positions of a large switchboard to facilitate the interconnection of other circuits appearing at the respective switchboard positions.

  8. SIP trunking - Wikipedia

    en.wikipedia.org/wiki/SIP_trunking

    SIP trunking is a voice over Internet Protocol (VoIP) technology and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX) and unified communications facilities. [1]

  9. One-way trunk - Wikipedia

    en.wikipedia.org/wiki/One-way_trunk

    In telecommunications, a one-way trunk is a trunk between two switching centers, over which traffic may be originated from one preassigned location only. The traffic may consist of two-way communications; the expression "one way" refers only to the origin of the demand for a connection. At the originating end, the one-way trunk is known as an ...