<div dir="auto"><br><p style="color:rgb(51,51,51);font-family:"open sans",helvetica,arial,sans-serif;background-color:rgb(255,255,255)">"CenturyLink (NYSE: CTL) has set a goal to reduce power consumption on its public switched telephone network by nearly 22,000 megawatt-hours a year, reducing greenhouse gas emissions as more customers migrate to VoIP and mobile voice services.</p><p style="color:rgb(51,51,51);font-family:"open sans",helvetica,arial,sans-serif;background-color:rgb(255,255,255)">Although CenturyLink is growing its IP-based voice service, this project is focused on consolidating more than 400,000 legacy PSTN subscriber lines across 50 Class 5 voice switches. "</p><p style="color:rgb(51,51,51);font-family:"open sans",helvetica,arial,sans-serif;background-color:rgb(255,255,255)"><br></p><p style="color:rgb(51,51,51);font-family:"open sans",helvetica,arial,sans-serif;background-color:rgb(255,255,255)">They're called class 5 because of 5ESS which is the most used class 5 switch at CenturyLink.</p><p style="color:rgb(51,51,51);font-family:"open sans",helvetica,arial,sans-serif;background-color:rgb(255,255,255)">Sorry, but I had to clarify this.</p><p style="color:rgb(51,51,51);font-family:"open sans",helvetica,arial,sans-serif;background-color:rgb(255,255,255)"><br></p><p style="color:rgb(51,51,51);font-family:"open sans",helvetica,arial,sans-serif;background-color:rgb(255,255,255)">Frsnk</p><div data-smartmail="gmail_signature">-----------------------------------<br>Frank Wimberly<br><br>My memoir:<br><a href="https://www.amazon.com/author/frankwimberly">https://www.amazon.com/author/frankwimberly</a><br><br>My scientific publications:<br><a href="https://www.researchgate.net/profile/Frank_Wimberly2">https://www.researchgate.net/profile/Frank_Wimberly2</a><br><br>Phone (505) 670-9918</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Dec 26, 2019, 8:43 AM Frank Wimberly <<a href="mailto:wimberly3@gmail.com">wimberly3@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><br><span style="color:rgb(60,64,67);font-family:roboto,helveticaneue,arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">June 2019) (Learn how and when to remove this template message). 5ESS used in a mobile telephone network. The 5ESS Switching System is a Class 5 telephone electronic switching system developed by ...</span><br><div data-smartmail="gmail_signature">-----------------------------------<br>Frank Wimberly<br><br>My memoir:<br><a href="https://www.amazon.com/author/frankwimberly" target="_blank" rel="noreferrer">https://www.amazon.com/author/frankwimberly</a><br><br>My scientific publications:<br><a href="https://www.researchgate.net/profile/Frank_Wimberly2" target="_blank" rel="noreferrer">https://www.researchgate.net/profile/Frank_Wimberly2</a><br><br>Phone (505) 670-9918</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Dec 26, 2019, 8:36 AM Marcus Daniels <<a href="mailto:marcus@snoutfarm.com" target="_blank" rel="noreferrer">marcus@snoutfarm.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal">Frank writes:<u></u><u></u></p>
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<p class="MsoNormal">“This was the telephone network in question.“<u></u><u></u></p>
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<p class="MsoNormal">With the mobile carriers and VOIP, I wonder how much of that code is still used? I once worked for a small company that wrote software to do billing for long distance telephone carriers. I was amazed by the seemingly arbitrary complexity.
Complex at a policy and inter-organizational level, not just the software.<u></u><u></u></p>
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<p class="MsoNormal">Marcus<u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Friam <<a href="mailto:friam-bounces@redfish.com" rel="noreferrer noreferrer" target="_blank">friam-bounces@redfish.com</a>> on behalf of Frank Wimberly <<a href="mailto:wimberly3@gmail.com" rel="noreferrer noreferrer" target="_blank">wimberly3@gmail.com</a>><br>
<b>Reply-To: </b>The Friday Morning Applied Complexity Coffee Group <<a href="mailto:friam@redfish.com" rel="noreferrer noreferrer" target="_blank">friam@redfish.com</a>><br>
<b>Date: </b>Thursday, December 26, 2019 at 5:39 AM<br>
<b>To: </b>The Friday Morning Applied Complexity Coffee Group <<a href="mailto:friam@redfish.com" rel="noreferrer noreferrer" target="_blank">friam@redfish.com</a>><br>
<b>Subject: </b>Re: [FRIAM] IT is Not Sustainable<u></u><u></u></span></p>
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<p class="MsoNormal">At Bell Labs we sure didn't pay anyone by LOC. We also had code reviews and software tools to enforce standards and very high pay. With a brand new PhD I made more than all but the 3 most senior members of the CS faculty at Pitt where
I was a grad student. This was the telephone network in question. <u></u><u></u></p>
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<p class="MsoNormal">Despite the high pay I disliked software administration methodology. The disagreements between the software tool developers (version control, integration of subsystems, compilers, etc) and the implementors of the applications, such as
call processing, were epic. Recall that Bell Labs invented C and Unix. After 18 months I returned to Pittsburgh to work at Carnegie Mellon in Robotics for two thirds the salary.<u></u><u></u></p>
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<p class="MsoNormal">Number 5 ESS was first deployed in March 1982, 4 years after work began. I suspect that it didn't have 200 million lines of code then, but close to it. Maybe Dave doesn't consider it an IT project but many of the software tools that were
developed were included in later Unix releases, I believe.<u></u><u></u></p>
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<p class="MsoNormal">It's going to be a beautiful day in Santa Fe.<u></u><u></u></p>
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<p class="MsoNormal">Frank<u></u><u></u></p>
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<p class="MsoNormal">-----------------------------------<br>
Frank Wimberly<br>
<br>
My memoir:<br>
<a href="https://www.amazon.com/author/frankwimberly" rel="noreferrer noreferrer" target="_blank">https://www.amazon.com/author/frankwimberly</a><br>
<br>
My scientific publications:<br>
<a href="https://www.researchgate.net/profile/Frank_Wimberly2" rel="noreferrer noreferrer" target="_blank">https://www.researchgate.net/profile/Frank_Wimberly2</a><br>
<br>
Phone (505) 670-9918<u></u><u></u></p>
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<p class="MsoNormal">On Thu, Dec 26, 2019, 1:28 AM Gary Schiltz <<a href="mailto:gary@naturesvisualarts.com" rel="noreferrer noreferrer" target="_blank">gary@naturesvisualarts.com</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">Spot on. <u></u><u></u></p>
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<p class="MsoNormal">On Thu, Dec 26, 2019 at 2:29 AM Marcus Daniels <<a href="mailto:marcus@snoutfarm.com" rel="noreferrer noreferrer" target="_blank">marcus@snoutfarm.com</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">Most programmers won't struggle to rationalize or improve code written by other people. The problem is that people are selfish. They think that their 10K LOC problem is beautiful and nimble, but that 1M LOC was once that too. It's
the behavior of teenagers.<br>
<br>
On 12/25/19, 10:47 PM, "Friam on behalf of Russell Standish" <<a href="mailto:friam-bounces@redfish.com" rel="noreferrer noreferrer" target="_blank">friam-bounces@redfish.com</a> on behalf of
<a href="mailto:lists@hpcoders.com.au" rel="noreferrer noreferrer" target="_blank">lists@hpcoders.com.au</a>> wrote:<br>
<br>
It's all about the LOC! Actually, I kind of agree - having worked on<br>
some MegaLOC codebases that functionally seemed to be no more complex<br>
than a 10KLOC project I'm involved in, the 10KLOC project is much more<br>
nimble - compile times are far less, making changes to the code easier<br>
and bugs less troublesome to winkle out.<br>
<br>
I've also refactored or rewritten pieces of code to slash the LOC by a<br>
factor of 3 or more for that particular section (eg 3KLOC -> 1KLOC) -<br>
but usually when bugs and problems kept on cropping up in that<br>
section.<br>
<br>
Even though the LOC is an entirely bogus measurement - if you paid a<br>
programmer by LOC, you'd get boilerplate and crappy comments.<br>
<br>
-- <br>
<br>
----------------------------------------------------------------------------<br>
Dr Russell Standish Phone 0425 253119 (mobile)<br>
Principal, High Performance Coders<br>
Visiting Senior Research Fellow <a href="mailto:hpcoder@hpcoders.com.au" rel="noreferrer noreferrer" target="_blank">
hpcoder@hpcoders.com.au</a><br>
Economics, Kingston University <a href="http://www.hpcoders.com.au" rel="noreferrer noreferrer" target="_blank">http://www.hpcoders.com.au</a><br>
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