What is Circuit Switching and Packet Switching

What is Circuit Switching and Packet Switching

Circuit Switching

Circuit switching is a technique of connecting the network of telecommunications where two meeting points of network make a dedicated channel of communication (circuit) through the system of that network before the communication of these nodes. The circuit persist the connection for the time of the session of communication. It also guarantees the whole channel bandwidth. Only when meeting points are connected with a circuit electrically and physically then circuit may function.

Examples of Circuit Switching

Example of a circuit switch is modern telephone network of analog type. When we can call to any other person, a continuous circuit of wire between both the telephones created by circuit switches. It made the calls as long as lasts.

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Packet Switching

In packet switching links of network are transferred by all the packets from many competeting sessions of communications instead of being delivered to anyone session at one time. As a result, there is a quantity service loss guarantees that are circuit switching provide.packet switch arrange the whole data in packets for transmission through the network without depending on any other.

A packet switch has four elements such as switching fabric, input ports, output ports, and routing processors. In billable services cases, like cellular services of communication, circuit switch charged fee per unit of time of connection while without any transfer of data. While packet switching charged fee per unit of information transfer such as packets, messages, or characters, etc.

Examples of Packet Switching

For example, you are using PC and open the favourite website which can allows you to download a large number of applications but you can download anyone application at a single time. Each and every packet has its own way of downloading that application i.e. your PC. If there is an obstruction occurs in network, the routers are liable for routing packets between the network automatically choose any of  different ways to protect data is transferred and shared as required.

Difference between Packet and Circuit Switching

Both, Packet & Circuit Switching are different methods that allows two or more devices to connect with each other. The basic but most important difference is circuit switching is connection oriented and packets are connection less. Also, circuit is only used for voice transmission not used for transmission of data. For data transmit, we can use packet switching. Circuit is not flexible because once a path made then all the transmission follow that path only but packets are flexible as there is routers for all the different packets individually. Circuit switching runs by using either time division or space division technology while packet switching runs through approaches either virtual circuit approach or datagram approach.


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