🚀 go-pugleaf

Ahem A Rivet's Shot <ste...@eircom.net> writes:
> LS - early modems - hundreds of bits per second 
> MS - late modems and early digital lines - tens of kilobits per second
> HS - DSL and early fixed wireless - a few megabits per second
> VHS - FTC and fixed LTE 4G - around 100 megabits per second
> UHS - FTH and fixed 5G - around a gigabit per second
> EHS - Metro links and the like - 10 gigabit per second and up

I had project started very early 80s I called HSDT (t1 & higher speed
links) ... high-speed data transport ... some past posts
http://www.garlic.com/~lynn/subnetwork.html#hsdt

mid-80s was having some equipment built on the other side of the pacific
and one friday just before leaving for a visit, got an email
announcement from communication group raleigh announcing new internal
discussion group ... with the following definition:

low-speed               <9.6kbits
medium-speed            19.2kbits
high-speed              56kbits
very high-speed         1.5mbits

Monday morning on the wall of a conference room on the other
side of the pacific

low-speed               <20mbits
medium-speed            100mbits
high-speed              200-300mbits
very high-speed         >600mbits

internal network links ... some past posts
http://www.garlic.com/~lynn/subnetwork.html#internalnet

were required to be encrypted ... and mid-80s there was claim (by link
encryptor product maker) that the internal network had over half of all
link encryptors in the world. some of this involved arguments with
various governments around the world, especially when links crossed
national boundaries ... for instance this is old post that includes
corporate locations (around the world) that added one or more links
during 1983
http://www.garlic.com/~lynn/2006k.html#8 Arpa address

I really hated what I had to pay for T1 link encryptors and faster speed
encryptors were hard to find. Mid-80s I got involved in doing encryptors
that would cost less than $100 to build and handle several.  mbytes/sec
(rather than mbits). Initially the corporate crypto product group
claimed that it significantly weakened the crypto standard (and couldn't
be used). It took me 3months to figure out how to explain to them that
rather than significantly weaker, it was actually significantly stronger
than crypto standard. It was hallow victory, they then said that I could
make as many as I wanted ... but they all had to be shipped to
gov. location on the east coast. It was when I realized that there were
3 kinds of crypto in the world, 1) the kind they don't care about, 2)
the kind you can't do, and 3) the kind you can only do for them.

-- 
virtualization experience starting Jan1968, online at home since Mar1970