Discuss the different approaches to circuit switching? Why it is suitable for voice transmission? What are its limitations?
Answers
Answer:
Circuit switching contrasts with packet switching, which divides the data to be transmitted into packets transmitted through the network independently. One disadvantage is that it can be relatively inefficient, because unused capacity guaranteed to a connection cannot be used by other connections on the same network.
Circuit switching
Explanation:
Circuit switching is a switching technique that establishes a dedicated path between sender and receiver.
approaches:
Datagram transmissions - Datagram transmissions have individually addressed frames.
Data-stream transmissions - Data-stream transmissions have a stream of data for which address checking occurs only once. The routing in circuit switching may have either static routing or dynamic routing.
Circuit switching is good for voice transmission because it has little transmission delay and constant signal transmission signal rate. Well suited to analog transmission of voice signals.
Disadvantages of Circuit Switching:
- As the connection is dedicated it cannot be used to transmit any other data even if the channel is free.
- It is inefficient in terms of utilization of system resources. ...
- Dedicated channels require more bandwidth.
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