18 Dec
1998
18 Dec
'98
4:02 a.m.
> Packet radio ? In the 30s ? This is a packet
switching network
> thru a single chanal with halve duplex connections.
My point is that transmitting digital data over the
land or air is really
a very old idea - most of what we know as networking theory these days was
formulated by the government and telephone companies long ago.
Ok, but this is true for almost all things - when they
come to broad audience, there is at least some 30 to
50 years of thinking and development before - Telephone,
networking, computers, cars, steam engine, what ever you
want.
Fun fact, in this weeks edition of Der Spiegel (a weekly
German newsmagazine) there is an artikle about modern/
future communication and integration of different ways
(voice, data, video, etc.). At one point they try to tell
the advantage of using an internet style network for
voice, instead of classic phone system. In the example
they tell that still today any phone connection depends
on a seperate, switched thru line, and an acordingly
seperate chanal - Just ignoring the fact that all lines
between exchanges are already digital, and even before
ISDN exchange to exchange connection have been build
as time or chanel multiplexing over single wires. In
Germany chanel multiplexing (I hope this is an under-
standable term) stared around 1950 - and time multiplexing
around 1970.
I don't know, if I should laugh or cry about this ignorance.
Only because they have stone age phones within their home
they belive the system behind is also stone age - and vice
versa ... *With an Pentium II chip all colours are brighter
and sounds are better ... '
Gruss
H.
--
Der Kopf ist auch nur ein Auswuchs wie der kleine Zeh.
H.Achternbusch