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  2. Analog telephone adapter - Wikipedia

    en.wikipedia.org/wiki/Analog_telephone_adapter

    A typical analog telephone adapter for connecting an analog phone to a VoIP provider Wikimedia Commons has media related to Analog telephony adapter . An analog telephone adapter ( ATA ) or FXS gateway is a device for connecting traditional analog telephones, fax machines, and similar customer-premises devices to a digital telephone system or a ...

  3. Digital-to-analog converter - Wikipedia

    en.wikipedia.org/wiki/Digital-to-analog_converter

    8-channel Cirrus Logic CS4382 digital-to-analog converter as used in a sound card. In electronics, a digital-to-analog converter (DAC, D/A, D2A, or D-to-A) is a system that converts a digital signal into an analog signal. An analog-to-digital converter (ADC) performs the reverse function.

  4. Telephone VoIP adapter - Wikipedia

    en.wikipedia.org/wiki/Telephone_VoIP_Adapter

    A telephone VoIP adapter (TVA), also called digital telephone adapter, is a device that interfaces digital private branch exchange (PBX) telephone sets to a Voice over Internet Protocol (VoIP) network, using, for example, the Session Initiation Protocol.

  5. VoIP phone - Wikipedia

    en.wikipedia.org/wiki/VoIP_phone

    Traditional PSTN phones can be used as VoIP phones with analog telephone adapters (ATA). A VoIP phone or application may have many features an analog phone doesn't support, such as e-mail-like IDs for contacts that may be easier to remember than names or phone numbers, or easy sharing of contact lists among multiple accounts.

  6. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    Telephones for traditional residential analog service are usually connected directly to telephone company phone lines which provide direct current to power most basic analog handsets independently of locally available electrical power. The susceptibility of phone service to power failures is a common problem even with traditional analog service ...

  7. Lightning (connector) - Wikipedia

    en.wikipedia.org/wiki/Lightning_(connector)

    Apple offers various adapters that allow the Lightning connector to be used with other interfaces, such as 30-pin, USB, HDMI, VGA, and SD cards. The Lightning to 30-pin adapter supports only a limited subset of the available 30-pin signals: USB data, USB charging, and analog audio output (via the DAC inside of the adapter [26]).

  8. Dial-up Internet access - Wikipedia

    en.wikipedia.org/wiki/Dial-up_Internet_access

    Digital Signal 0 is 64 kbit/s and reserves 8 kbit/s for signaling information; therefore a 56 kbit/s connection is the highest that will ever be possible with analog phone lines. Dial-up connections usually have latency as high as 150 ms or even more, higher than many forms of broadband, such as cable or DSL, but typically less than satellite ...

  9. RAMDAC - Wikipedia

    en.wikipedia.org/wiki/RAMDAC

    A Brooktree RAMDAC. A RAMDAC (random-access memory digital-to-analog converter) is a combination of three fast digital-to-analog converters (DACs) with a small static random-access memory (SRAM) used in computer graphics display controllers or video cards to store the color palette and to generate the analog signals (usually a voltage amplitude) to drive a color monitor. [1]

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