Networks in a new mode

• All digital

• Digital circuit switching

• Unswitched networks

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All digital networks are destined to replace the analog phone network. Instead of reserving an entire circuit for the duration of a session to one purpose, digital networks highly efficiently mix traffic from many sources over the same circuit and still mange to deliver content to the right destination.

Networks that do not reserve an entire path to one user at a time are called unswitched; a good example is an Ethernet lan.