Page 87 - eBOOK FUNDAMENTAL OF TELECOMMUNICATION NETWORK

P A C K E T

S W I T C H I N G

Each packet is delivered independently and each may

be routed via a different path. At the destination, the

original message is reassembled in the correct order,

based on the packet number.

Packet switching networks do not require a circuit to

be established and allow many pairs of nodes to

communicate concurrently over the same channel.

In packet switching, instead of being dedicated to one

communication session at a time, network links are

shared by packets from multiple competing

communication sessions, resulting in the loss of the

quality of service guarantees that are provided by

circuit switching.

Packet switching shares available network bandwidth

between multiple communication sessions.

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