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Stages of a Circuit-Switched Network

11

    Circuit Establishment

    • A circuit needs to be established from the source to its destination. Global addresses are used to make entries for the connection before the actual transmission can take place between these two parties. For you to engage in a telephone communication, this process must take place, and only then you will communicate with your intended party. In such a case, you are the source and your intended party is the destination.

    Acknowledgment

    • In circuit-switched network, the receiving node needs to acknowledge its ability to support the transmission before data can be relayed -- also known as connection-oriented. The network operates in the same way as ATM networks, where customers make transactions. This connection is made possible using global addresses only recognized by the two stations: the source and the destination.

    Data Transfer

    • Data transfer is the actual phase of transferring information from one station to the other through a network. Transmission may include both analog and digital signals, depending on the nature of the network protocol. These network protocols display rules that govern communication between network devices. While analogue signals can take any value within a range, digital signals have a limited number of values in that regard. Use Transmission Control Protocol (TCP) to provide a reliable process-to-process communication in a circuit-switched network.

    Circuit Disconnection

    • Circuit disconnection is the last stage in a circuit-switched network. It occurs after some time of data transfer by the action of one of the two stations. But termination may not always take place after successful intervals of data transfer -- failure in communication, administrative action or other exceptional factors may cause one party to do so. After circuit disconnection, data transfer cannot take place.

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