Data Flow

This section discusses some of the important issues that affect data flow in a network:

  • The parts of the data circuit that comprises every network, including data terminal equipment (DTE), the data communications (or channel) equipment (DCE), the transmission channel, and the physical interface

  • Modems and modulation

  • Simplex, half-duplex, and full-duplex data transmission

  • Coding schemes

  • Asynchronous and synchronous transmission modes

  • Error control

The DTE, the DCE, the Transmission Channel, and the Physical Interface

Every data network is a seven-part data circuit: the originating DTE, its physical interface, the originating DCE, the transmission channel, the receiving DCE, its physical interface, and the receiving DTE (see Figure 6.1). The ...

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