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  2. Digital access carrier system - Wikipedia

    en.wikipedia.org/wiki/Digital_Access_Carrier_System

    A DACS call travels most of the way from the subscriber to the exchange digitally, it is converted back to analogue to interface to the telephone exchange line card, i.e. ISDN has a digital interface at the exchange end and the subscriber end, DACS has an analogue interface at both the exchange end and the subscriber end.

  3. Hidden node problem - Wikipedia

    en.wikipedia.org/wiki/Hidden_node_problem

    For example, in a wireless network, it is likely that the node at the far edge of the access point's range, which is known as A, can see the access point, but it is unlikely that the same node can communicate with a node on the opposite end of the access point's range, C. These nodes are known as hidden.

  4. USB communications - Wikipedia

    en.wikipedia.org/wiki/USB_communications

    The idle line state is when the device is connected to the host with a pull-up on either D+ (for full speed USB 1.x) or D− (for low speed USB 1.x), with transmitter output on both host and device is set to high impedance (hi-Z) (disconnected output). A USB device pulls one of the data lines high with a 1.5 kΩ resistor.

  5. Digital cross-connect system - Wikipedia

    en.wikipedia.org/wiki/Digital_cross-connect_system

    DCS units are also sometimes colloquially called "DACS" units, after a proprietary brand name of DCS units created and sold by AT&T's Western Electric division, now Alcatel-Lucent. Modern digital access and cross-connect systems are not limited to the T-carrier system , and may accommodate high data rates such as those of SONET .

  6. Multi-service access node - Wikipedia

    en.wikipedia.org/wiki/Multi-service_access_node

    A multi-service access node (MSAN), also known as a multi-service access gateway (MSAG), is a device typically installed in a telephone exchange (although sometimes in a roadside serving area interface cabinet [1]) which connects customers' telephone lines to the core network, to provide telephone, ISDN, and broadband such as DSL all from a single platform.

  7. Fix problems with third-party mail applications - AOL Help

    help.aol.com/articles/why-cant-i-access-my-aol...

    If you've activated 2-step verification for your AOL account, you'll need to generate and use an "app password" to access AOL Mail from these apps. Check your IMAP settings If your AOL Mail isn't sending or receiving mail properly, you'll need to make sure your IMAP or POP settings are correct .

  8. Serial Peripheral Interface - Wikipedia

    en.wikipedia.org/wiki/Serial_Peripheral_Interface

    Communications that were out-of-band of LPC like general-purpose input/output (GPIO) and System Management Bus (SMBus) should be tunneled through eSPI via virtual wire cycles and out-of-band message cycles respectively in order to remove those pins from motherboard designs using eSPI. [30]

  9. Broadband remote access server - Wikipedia

    en.wikipedia.org/wiki/Broadband_remote_access_server

    A broadband remote access server (BRAS, B-RAS or BBRAS) routes traffic to and from broadband remote access devices such as digital subscriber line access multiplexers (DSLAM) on an Internet service provider's (ISP) network. [1] [2] BRAS can also be referred to as a broadband network gateway or border network gateway (BNG). [3]