Article View: alt.folklore.computers
Article #620168Re: Important US technology companies sold to foreigners
From: hanc...
Date: Mon, 05 Feb 2018 22:01
Date: Mon, 05 Feb 2018 22:01
24 lines
2966 bytes
2966 bytes
On Saturday, February 3, 2018 at 9:42:21 PM UTC-5, Lynn Wheeler wrote:
>
> Supposedly SBS was going to make money off computer communications
> ... but IBM's SNA was totally not suited for communications over
> satellites .... SNA windowing/pacing didn't even handle T1/1.5mbits/sec
> terrestrial latency ... so satelite latency really blew it out of the
> water. SBS eventually fell back to trying to sell comsumer telephone
> service over satellite ... round-trip latency over satellite was as bad
> for voice as it was for SNA.
That is surprising, since early on in satellite communications
they discovered the problem with latency in both voice and data
transmission. Indeed, by 1960, they knew the characteristics of
voice and data were different enough to require different line
treatments ("conditioning") to accommodate higher data speeds
on landlines.
I'm not sure when SNA was developed, but I would guess by that
point overseas computer data transmission was already in place
via cable, as well as transcontinental data transmission via
microwave, which has latency, too.
Some of that is touched on in the following:
http://massis.lcs.mit.edu/telecom-archives/archives/technical/western-union-tech-review/21-4/p174.htm
Technical Details
Message-ID:
<f3d6b55b-414c-456f-acaa-2966dd999a74@googlegroups.com>Path:
mbox-mo1.pugleaf.net!h12ni229qte.0!nntp.google.com!q21no973022qtn.1!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mailReferences:
<2c5ea5c8-9317-4a35-8775-d736ebbb6327@googlegroups.com> <87607fce56.fsf@usenet.ankman.de> <kq7a7d1sjsqnltmkm789ql5r38s36ecnc9@4ax.com> <p54ndg$g3s$1@pechter.eternal-september.org> <8qtb7d5n9t5h883cclkl1csd1f103snnkb@4ax.com> <p54vka$b5v$1@dont-email.me> <9d71bdb2-2096-4bf3-996c-7108b3675c61@googlegroups.com> <266155326.539397906.147073.peter_flass-yahoo.com@news.eternal-september.org> <87zi4po4qf.fsf@garlic.com>Show Full Headers
Complete Article Headers
X-Received: by 10.200.18.74 with SMTP id g10mr233262qtj.35.1517868090346; Mon, 05 Feb 2018 14:01:30 -0800 (PST) X-BeenThere: alt.folklore.computers@googlegroups.com Received: by 10.55.214.77 with SMTP id t74ls4897112qki.10.gmail; Mon, 05 Feb 2018 14:01:29 -0800 (PST) X-Received: by 10.55.222.19 with SMTP id h19mr229440qkj.25.1517868089485; Mon, 05 Feb 2018 14:01:29 -0800 (PST) X-Received: by 10.31.98.66 with SMTP id w63mr33167vkb.2.1517868089147; Mon, 05 Feb 2018 14:01:29 -0800 (PST) Path: mbox-mo1.pugleaf.net!h12ni229qte.0!nntp.google.com!q21no973022qtn.1!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: alt.folklore.computers Date: Mon, 5 Feb 2018 14:01:28 -0800 (PST) In-Reply-To: <87zi4po4qf.fsf@garlic.com> Complaints-To: groups...@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=8.41.192.198; posting-account=WKyNOQkAAACNglsCZiIox1kdy9R-66KH NNTP-Posting-Host: 8.41.192.198 References: <2c5ea5c8-9317-4a35-8775-d736ebbb6327@googlegroups.com> <87607fce56.fsf@usenet.ankman.de> <kq7a7d1sjsqnltmkm789ql5r38s36ecnc9@4ax.com> <p54ndg$g3s$1@pechter.eternal-september.org> <8qtb7d5n9t5h883cclkl1csd1f103snnkb@4ax.com> <p54vka$b5v$1@dont-email.me> <9d71bdb2-2096-4bf3-996c-7108b3675c61@googlegroups.com> <266155326.539397906.147073.peter_flass-yahoo.com@news.eternal-september.org> <87zi4po4qf.fsf@garlic.com> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <f3d6b55b-414c-456f-acaa-2966dd999a74@googlegroups.com> Subject: Re: Important US technology companies sold to foreigners From: hanc...@bbs.cpcn.com Injection-Date: Mon, 05 Feb 2018 22:01:29 +0000 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit