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  2. Circuit ID - Wikipedia

    en.wikipedia.org/wiki/Circuit_ID

    A circuit ID is a company-specific identifier assigned to a data or voice network connection between two locations. This connection, often called a circuit, may then be leased to a customer referring to that ID. In this way, the circuit ID is similar to a serial number on any product sold from a retailer to a customer.

  3. ZX Interface 1 - Wikipedia

    en.wikipedia.org/wiki/ZX_Interface_1

    Station number 0 is used to indicate broadcast. Data is transmitted in packets, each a maximum of 255 bytes long; the packet and the header are protected by a checksum. Character transmission uses 1 start bit, 8 data bits and 1 stop bit (the common 8-N-1 configuration). Main commands: [2] FORMAT "n";<station number> SAVE * "n";<station number>

  4. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    [1]: §21.4.28 494 Security Agreement Required The server has received a request that requires a negotiated security mechanism, and the response contains a list of suitable security mechanisms for the requester to choose between, [21]: §§2.3.1–2.3.2 or a digest authentication challenge. [21]: §2.4

  5. Network analyzer (electrical) - Wikipedia

    en.wikipedia.org/wiki/Network_analyzer_(electrical)

    ZVA40 vector network analyzer from Rohde & Schwarz.. A network analyzer is an instrument that measures the network parameters of electrical networks.Today, network analyzers commonly measure s–parameters because reflection and transmission of electrical networks are easy to measure at high frequencies, but there are other network parameter sets such as y-parameters, z-parameters, and h ...

  6. Circuit identification code - Wikipedia

    en.wikipedia.org/wiki/Circuit_identification_code

    To allow a call to be set up correctly, where ISUP is supported, a switch will signal call-related information like called or calling party number to the next switch in the network using ISUP messages. The CIC provides information about where the voice part of the call is carried - on which trunk and in which timeslot.

  7. Chip (CDMA) - Wikipedia

    en.wikipedia.org/wiki/Chip_(CDMA)

    In digital communications, a chip is a pulse of a direct-sequence spread spectrum (DSSS) code, such as a pseudo-random noise (PN) code sequence used in direct-sequence code-division multiple access (CDMA) channel access techniques.

  8. Fibre Channel network protocols - Wikipedia

    en.wikipedia.org/wiki/Fibre_Channel_network...

    4 Extended header(s) 0 or more Routing Control: 1 Destination ID: 3 Class-Specific Control / Priority: 1 Source ID: 3 Data Structure Type: 1 Frame Control: 3 Sequence ID: 1 Data Field Control: 1 Sequence Count: 2 Originator Exchange ID: 2 Responder Exchange ID: 2 Parameter: 4 Data field: 0 to 2112 CRC - Cyclic redundancy Check: 4 EOF - End of ...

  9. ZX Spectrum - Wikipedia

    en.wikipedia.org/wiki/ZX_Spectrum

    An online tool now exists to allow users to ascertain the likely issue number of their ZX Spectrum by inputting the serial number. [111] These models experienced numerous changes to its motherboard design throughout its life; mainly to improve manufacturing efficiencies, but also to correct bugs from previous boards.