Packet Switching and Circuit Switching


Circuit-switched networks - In telecommunications, this form of a network is one which establishes a single dedicated channel or circuit between terminals and nodes before its users can communicate (Martin et al, 2011). Every circuit, dedicated, is never being used by other clients to the time the circuit is freed, and a new communication is established. Regardless if, no communication is taking place in the dedicated channel then, that circuit still remains not availed to other clients. Above circuit switching being expensive, it is an old technology, what PSTN uses (Martin et al, 2011). It is more reliable compared to packet switching. When a client has a circuit dedicated for his session, he is sure to get the complete information delivered. This type network is connection oriented. Circuit-switched networks work well for specified forms of applications that have limited points to go reach. It works perfectly on sole use of voice applications.

Packet-switched networks – these networks do not need a circuit to be established. They allow multiple pairs of nodes, which communicate almost concurrently over the same data channel. All packets are packet is custom addressed precluding the requirement for dedicated paths to assist the packets find their way to target. Packet-Switched networks are connectionless, no circuit dedication, and they are more modern. It exercises cost sharing (Thompson, 2000).

No similarity exists between these two forms of networks only that they are both forms of communication networks in telecommunication.

Network needs of modern computing

For the leading organizations, the payoff is evident; currently clients are after cheap, time saving yet dedicated network linkages. Take an example of placing a call on an international Public switched network, the callers can only communicate if one of them is silent. A lot of time is wasted, as a result. Packet switched networks solve this issue. Packet switching predominates the current the modern favor. Packet switching is efficient while circuit switching is relatively inefficient given that capacity is guaranteed on each connection that is set up, but not in simultaneously used, but rather momentarily (Thompson, 2000).

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