What are the advantages and disadvantages of packet switching over circuit switching?
The comparison of packet switching and circuit switching demonstrating advantages and disadvantages of packet switching over circuit switching is specified below:
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Circuit Switching
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Packet Switching
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Dedicated transmission path.
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No dedicated transmission path
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Transmission of data.
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Transmission of packets.
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Operate in real time.
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Near real time.
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Message not stored.
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Message held for short time
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Path established for complete message.
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Route established for each packet
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Call setup delay.
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Packet transmission delay.
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Busy signal if called party busy.
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No busy signal.
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Blocking may arise.
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Blocking cannot arise
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User responsible for message-loss protection.
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Network may be responsible for each packet but not for entire message.
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Code conversion or no speed.
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Code and speed conversion.
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Fixed bandwidth transmission.
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Dynamic utilization of bandwidth.
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No overload bits after initial setup delay.
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Overload bits in each packet.
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