Asynchronous and Synchronous

Hi,

Asynchronous modems are an example of asynchronous - these are the typical dial up modems we have had to often use in the past and less so these days.

A leased line is an example of a synchronous link. Typically uses a serial connection on a Cisco router. Be careful as certain serial interfaces on Cisco routers are synchronous and others asynchronous.

Here is a discription on the differences on wikipedia -

HTH,

David

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here:

Many thanks.The wiki link was very usedful