Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: "Carlos E. R." Newsgroups: comp.os.linux.misc,alt.comp.os.windows-11 Subject: Re: Real-time OSs (Re: Microsoft Is Abandoning Windows 11 SE) Date: Thu, 14 Aug 2025 11:27:07 +0200 Lines: 33 Message-ID: References: <106mke5$1di32$1@dont-email.me> <3ihcmlx47d.ln2@Telcontar.valinor> <107070d$3hvho$1@dont-email.me> <1071hb2$3qqje$2@toylet.eternal-september.org> <1071jbr$3ra8s$1@dont-email.me> <10746fg$h625$2@dont-email.me> <20250808081850.00002e14@gmail.com> <1075pla$ukab$1@dont-email.me> <20250808144937.000021b1@gmail.com> <10761aq$vv6o$3@dont-email.me> <10777f7$17kq4$8@dont-email.me> <6uqkmlxjb8.ln2@Telcontar.valinor> <1079oe9$1ppd6$6@dont-email.me> <107ab26.3rg.1@ID-201911.user.individual.net> <3rkmmlxplv.ln2@Telcontar.valinor> <107cipt$2g8mr$9@dont-email.me> <107ghmk$3j56j$4@dont-email.me> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: individual.net 4vT3dI6jx2KxcGpwmy8Zjw28eIrsk/47aPKWEWTd66H4tS+My9 Cancel-Lock: sha1:aYQ8cANZC1XEJg004+d7NeivTtQ= sha256:um7mcSKbdkZMZSWRJQ4gWBeDS89gnSYHk3PUSvSy8H8= User-Agent: Mozilla Thunderbird Content-Language: en-CA, es-ANY In-Reply-To: Xref: csiph.com comp.os.linux.misc:71026 alt.comp.os.windows-11:22088 On 2025-08-14 05:14, Lars Poulsen wrote: > On 2025-08-13, Carlos E. R. wrote: >> Telcos systems were subject to strict quality control systems, that >> worked. VoIP systems are not. >> >> As an example that anybody can see, the terminals at home had their own >> power. Even if the nation had a full power failure, the telephone >> network kept running. Anybody could phone emergencies or his cousin. > > The terminals (desk telephones) did not have their own power, but were > powered over the telephone lines (48V, ca 50 mA) from the central > switching offices. I know, of course. I worked in that sector. > Government regulations required them to have > batteries that could keep everything running for 3 days and diesel > backup generators to work beyond that. > > As traffic swictched to cellphones, there were for a long time no such > quality standards enforced. Because if the cellphones did not work, we > still had the POTS network to fall back on. And now ATT is asking > permission in several states to completely turn off the wireline > service. The POTS network has been decommissioned in Spain, completely. At least in Telefónica, the major player, and nobody else installed their own copper pairs. It is fibre to the home and VoIP, using local power. So with a mains power failure it goes down. -- Cheers, Carlos E.R.