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Iamme

Could there be a case where the route is pre-planned but includes two messages wanting a link at the same time? (Though of course it is predetermined which will get it.) What if there's just no better way? So couldn't we need buffering even with circuit-switched routing?

bpr

@lamme, yes, sort of as the message is delayed but not technically buffered. We do not consider it buffering if the message has never entered the network. With circuit-switched, the message does not enter the network until the entire circuit is allocated. Thus while two messages needing a link will delay one of the circuit setups, that delayed message has not yet entered the network and is therefore unbuffered.

Buffering is where part or all of the message is being stored temporarily at one or more switches / routers.

Iamme

@bpr Oh, I see. I misunderstood some aspects of the system. Thanks!