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  • 电信专业英英词典D-6

    Direct Inward Dialing (DID) DID is PBX-to-central office trunks that allow incoming calls to a PBX to ring specific stations without attendant assistance. DID greatly reduces the number of required co...

  • 电信专业英英词典D-5

    DCE data circuit terminating equipment DCP digital communications protocol DCS digital cross-connect system DDD direct distance dialing DDN Defense Data Network Digit L Digital L is another amplitude...

  • 电信专业英英词典D-4

    D type Channel Bank A D type channel bank is channel termination equipment used for combining (multiplexing) individual analog channel signals on a time division basis. D type channel banks provide in...

  • 电信专业英英词典D-3

    Duplex Transmission - This is the capability for simultaneous data transmission between a sending and receiving station. Dual Tone Multi-Frequency (DTMF) - This is when two tones are used to represent...

  • 电信专业英英词典D-2

    Delay - This is the wait time between to specific events, and regarding satellite communications, it is the time it takes for a signal to go from the transmission station up to orbit and through the s...

  • 电信专业英英词典D-1

    DAMA - Stands for Demand-Assigned Multiple Access. This is a way to instantaneously assign telephony channels in a transponder according to the immediate traffic demands. Dash - This is the the charac...

  • 电信专业英英词典C-9

    CPU central processing unit Cross Connect 1.in a premises distribution system, equipment used to terminate and administer communications circuits. In a wire cross connect, jumper wires or patch cords...

  • 电信专业英英词典C-8

    Codec Codec is a contraction of coder and decoder; a device that encodes analog signals into digital signals, for transmission through a network in digital format, and decodes received digital signals...

  • 电信专业英英词典C-7

    Channel A channel is a single communications path in a transmission medium connecting two or more points in a network, each path being separated by some means; e.g., spatial or multiplex separation, s...

  • 电信专业英英词典C-6

    补充: CBR continuous bit rate CCIS common-channel interoffice signaling CCITT CCITT is the International Consultative Committee for Telephone and Telegraph, a consultative committee to the Interna...

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