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  2. Fax - Wikipedia

    en.wikipedia.org/wiki/Fax

    T.30 specifies the procedures that a sending and receiving terminal use to set up a fax call, determine the image size, encoding, and transfer speed, the demarcation between pages, and the termination of the call. T.30 also references the various modem standards. V.21, V.27ter, V.29, V.17, V.34: ITU modem standards used in facsimile. The first ...

  3. Modem over VoIP - Wikipedia

    en.wikipedia.org/wiki/Modem_over_VoIP

    This use of G.711 coding is sometimes called 'fax pass-through' as it enables analog fax transmission (which also uses a modem connection) over VoIP. [2] G.711 modem-over-VoIP communication can be useful for connecting an Internet-connected computer to a dial-up system that only has modem connectivity over the PSTN.

  4. Internet fax - Wikipedia

    en.wikipedia.org/wiki/Internet_fax

    Internet fax, e-fax, or online fax is the use of the internet and internet protocols to send a fax (facsimile), rather than using a standard telephone connection and a fax machine. A distinguishing feature of Internet fax, compared to other Internet communications such as email , is the ability to exchange fax messages with traditional ...

  5. T.38 - Wikipedia

    en.wikipedia.org/wiki/T.38

    This is then sent either to a T.38-enabled end point such as fax machine or fax server or another T.38 gateway that converts it back to a PSTN PCM or analog signal and terminates the fax on a T.30 device. The T.38 recommendation defines the use of both TCP and UDP to transport T.38 packets. Implementations tend to use UDP, due to TCP's ...

  6. Telephony - Wikipedia

    en.wikipedia.org/wiki/Telephony

    Telephony (/ t ə ˈ l ɛ f ə n i / tə-LEF-ə-nee) is the field of technology involving the development, application, and deployment of telecommunications services for the purpose of electronic transmission of voice, fax, or data, between distant parties.

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