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  2. Softswitch - Wikipedia

    en.wikipedia.org/wiki/Softswitch

    An access server might take a mobile call or a call originating from a traditional telephone line, convert it to IP traffic, then send it over an IP network to another such device, which terminates the call by reversing the process and converting the voice over IP call to circuit-switched digital systems using traditional digital time-division ...

  3. Routing in cellular networks - Wikipedia

    en.wikipedia.org/wiki/Routing_in_cellular_networks

    Network routing in a cellular network deals with the challenges of traditional telephony such as switching and call setup. [ 1 ] Most cellular network routing issues in different cells can be attributed to the multiple access methods used for transmission.

  4. Media gateway control protocol architecture - Wikipedia

    en.wikipedia.org/wiki/Media_Gateway_Control...

    Relationship of network components in a media gateway control protocol architecture. The media gateway control protocol architecture is a methodology of providing telecommunication services using decomposed multimedia gateways for transmitting telephone calls between an Internet Protocol network and traditional analog facilities of the public switched telephone network (PSTN). [1]

  5. PSTN network topology - Wikipedia

    en.wikipedia.org/wiki/PSTN_network_topology

    PSTN network topology is the switching network topology of a telephone network connected to the public switched telephone network (PSTN).. In the United States and Canada, the Bell System network topology was the switching system hierarchy implemented and operated from c. 1930 to the 1980s for the purpose of integrating the diverse array of local telephone companies and telephone numbering ...

  6. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    The broader terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the delivery of voice and other communication services, such as fax, SMS, and voice messaging, over the Internet, in contrast to the traditional public switched telephone network (PSTN), commonly known as plain old telephone service (POTS).

  7. Session Initiation Protocol - Wikipedia

    en.wikipedia.org/wiki/Session_Initiation_Protocol

    SIP-based telephony networks often implement call processing features of Signaling System 7 (SS7), for which special SIP protocol extensions exist, although the two protocols themselves are very different. SS7 is a centralized protocol, characterized by a complex central network architecture and dumb endpoints (traditional telephone handsets).

  8. Public switched telephone network - Wikipedia

    en.wikipedia.org/wiki/Public_switched_telephone...

    Originally a network of fixed-line analog telephone systems, the PSTN is now predominantly digital in its core network and includes terrestrial cellular, satellite, and landline systems. These interconnected networks enable global communication, allowing calls to be made to and from nearly any telephone worldwide. [1]

  9. VoIP phone - Wikipedia

    en.wikipedia.org/wiki/VoIP_phone

    Yealink Network Technology Co Ltd T27G VoIP Telephone Avaya IP phone. The overall hardware may look like a telephone or mobile phone. A VoIP phone has the following hardware components An handset with a headphone and a microphone, unless the whole telephone is a hand-held device containing these; A loudspeaker to act as a speakerphone