[e2e] seeking help recalling a network term

weigengyu weigengyu at hotmail.com
Wed Jun 14 20:47:33 PDT 2006

----- Original Message ----- 
From: "Jon Crowcroft" <Jon.Crowcroft at cl.cam.ac.uk>
Subject: Re: [e2e] seeking help recalling a network term

> In missive <e715d03bb4a90c2eee0bd1707a6e4adf at cs.utexas.edu>, Chris Edmondson-Yu
> rkanan typed:
> >>I know how much you like history, so here's some fun:
> >>That was Donald Davies concept (who independently invented packet 
> >>switching in the UK in 1965); he used the term isarithmic, the Greek 
> >>term for "equal").
> it was part of the french 1st packet switched net hop-bu-hop traffic
> management (flow, congestion and crowd control) technology.... its way
> cool and the idea has been re-invented lotsa times including in other
> areas like road-trains
> also bittorrent incentive matching technology is basically the same
> concept
>   jon

There is a set of signal lamps every 2km to control railway train go/stop here.

In telecom, SS7 networks are packet switched networks,
The SS7 messages/packets are actually controlled link-by-link  in operations.
The mechanism to prevent congestion is to keep the traffic less than 0.7 Erlang for each link.

Telephone networks works well in general.


More information about the end2end-interest mailing list