- Circuit switched network. At start of complete message transaction (telephone call) a route through the network is identified and held for the entire duration of the call
- Packet switched network. Routes small ‘chunks’ (packets) of the message down the best route at that time – least noisy, least congested…
Advantages Of Packet networks
- Optimise route on packet by packet basis
- Attractive for ensuring best use of the network – optimum traffic throughput
- Signalling overhead to ensure the packets arrive in the correct sequence at the receiver when they have travelled via different paths
Circuit switched more attractive for voice
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