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#telephoneexchange

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IT News<p>When the UK’s Telephone Network Went Digital With System X - The switch from analog telephone exchanges to a purely digital network meant a rev... - <a href="https://hackaday.com/2025/07/24/when-the-uks-telephone-network-went-digital-with-system-x/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2025/07/24/when-t</span><span class="invisible">he-uks-telephone-network-went-digital-with-system-x/</span></a> <a href="https://schleuss.online/tags/telephoneexchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>telephoneexchange</span></a> <a href="https://schleuss.online/tags/history" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>history</span></a></p>
Pyrzout :vm:<p>When the UK’s Telephone Network Went Digital With System X <a href="https://hackaday.com/2025/07/24/when-the-uks-telephone-network-went-digital-with-system-x/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2025/07/24/when-t</span><span class="invisible">he-uks-telephone-network-went-digital-with-system-x/</span></a> <a href="https://social.skynetcloud.site/tags/telephoneexchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>telephoneexchange</span></a> <a href="https://social.skynetcloud.site/tags/History" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>History</span></a></p>
This Is My Glasgow<p>The Hope Street elevation of the former Douglas Telephone Exchange building in central Glasgow. It was designed in a Baroque style, with the left hand section being constructed in 1910. The right hand section wasn't built until 1938, but maintains the same style, despite this 28 year gap.</p><p><a href="https://mastodon.scot/tags/glasgow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgow</span></a> <a href="https://mastodon.scot/tags/architecture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecture</span></a> <a href="https://mastodon.scot/tags/telephoneexchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>telephoneexchange</span></a> <a href="https://mastodon.scot/tags/architecturephotography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecturephotography</span></a></p>
lpbkdotnet<p><span class="h-card" translate="no"><a href="https://hive.institute/@ety" class="u-url mention">@<span>ety</span></a></span> my shenanigans are mostly on much older kit than your average home lab phone setup (<a href="https://mstdn.social/tags/electromechanical" class="mention hashtag" rel="tag">#<span>electromechanical</span></a> <a href="https://mstdn.social/tags/strowger" class="mention hashtag" rel="tag">#<span>strowger</span></a>!)</p><p>My preference for phone kit is “massive, heavy, and maintained with a spanner” 😂</p><p>I just throw a ton of tags at it (usually as many relevant ones as I can fit in the post) <a href="https://mstdn.social/tags/TelephoneExchange" class="mention hashtag" rel="tag">#<span>TelephoneExchange</span></a> <a href="https://mstdn.social/tags/phoneExchange" class="mention hashtag" rel="tag">#<span>phoneExchange</span></a> <a href="https://mstdn.social/tags/pbx" class="mention hashtag" rel="tag">#<span>pbx</span></a> <a href="https://mstdn.social/tags/vintagePhone" class="mention hashtag" rel="tag">#<span>vintagePhone</span></a> are probably my most commonly used.</p><p>I’ve been hanging out with <span class="h-card" translate="no"><a href="https://tacobelllabs.net/@CuTEL" class="u-url mention">@<span>CuTEL</span></a></span> a bit over the last couple of years, so I also have some more modern <a href="https://mstdn.social/tags/voip" class="mention hashtag" rel="tag">#<span>voip</span></a> &amp; <a href="https://mstdn.social/tags/dect" class="mention hashtag" rel="tag">#<span>dect</span></a></p>
This Is My Glasgow<p>The Bell Telephone Exchange on Ingram Street in Glasgow. While dated 1937, it actually opened in 1936, and served eastern Central Glasgow. Before All-Figure Numbers was introduced in the 1960s, it used the extension BELL.</p><p><a href="https://mastodon.scot/tags/glasgow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgow</span></a> <a href="https://mastodon.scot/tags/telephoneexchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>telephoneexchange</span></a> <a href="https://mastodon.scot/tags/architecture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecture</span></a> <a href="https://mastodon.scot/tags/glasgowbuildings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgowbuildings</span></a> <a href="https://mastodon.scot/tags/architecturephotography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecturephotography</span></a></p>
lpbkdotnet<p>My <a href="https://mstdn.social/tags/TelephoneExchange" class="mention hashtag" rel="tag">#<span>TelephoneExchange</span></a> shed has gained a new friend… but they need a name!</p><p>Any suggestions?</p><p>Alliteration, puns (and boosts) very much welcome</p>
lpbkdotnet<p>You know it’s going well if I’ve had to get the diagrams out…</p><p><a href="https://mstdn.social/tags/telephone" class="mention hashtag" rel="tag">#<span>telephone</span></a> <a href="https://mstdn.social/tags/phone" class="mention hashtag" rel="tag">#<span>phone</span></a> <a href="https://mstdn.social/tags/vintageTelephone" class="mention hashtag" rel="tag">#<span>vintageTelephone</span></a> <a href="https://mstdn.social/tags/vintagePhone" class="mention hashtag" rel="tag">#<span>vintagePhone</span></a> <a href="https://mstdn.social/tags/strowger" class="mention hashtag" rel="tag">#<span>strowger</span></a> <a href="https://mstdn.social/tags/TelephoneExchange" class="mention hashtag" rel="tag">#<span>TelephoneExchange</span></a></p>
lpbkdotnet<p>Is anyone able to lay their hands on a firmware image for a Samsung Ubigate IBG1004?</p><p>It’s an <a href="https://mstdn.social/tags/isdn" class="mention hashtag" rel="tag">#<span>isdn</span></a> to <a href="https://mstdn.social/tags/sip" class="mention hashtag" rel="tag">#<span>sip</span></a> <a href="https://mstdn.social/tags/telephone" class="mention hashtag" rel="tag">#<span>telephone</span></a> gateway, and the one I’ve got seems to be corrupt and won’t decompress.</p><p>My usual haunts for firmware images are coming up blank.</p><p>The filename will be something like `iBG1004_Advanced_1.6.1.9.Z` - but I&#39;m really not too fussy about the version number!</p><p>Please boost if you think you have followers that can help!</p><p><a href="https://mstdn.social/tags/TelephoneExchange" class="mention hashtag" rel="tag">#<span>TelephoneExchange</span></a> <a href="https://mstdn.social/tags/phone" class="mention hashtag" rel="tag">#<span>phone</span></a> <a href="https://mstdn.social/tags/phoneExchange" class="mention hashtag" rel="tag">#<span>phoneExchange</span></a> <a href="https://mstdn.social/tags/PABX" class="mention hashtag" rel="tag">#<span>PABX</span></a> <a href="https://mstdn.social/tags/PBX" class="mention hashtag" rel="tag">#<span>PBX</span></a> <a href="https://mstdn.social/tags/voip" class="mention hashtag" rel="tag">#<span>voip</span></a></p>
lpbkdotnet<p>Ok <a href="https://mstdn.social/tags/vintageElectronics" class="mention hashtag" rel="tag">#<span>vintageElectronics</span></a> nerds! tell me about these things…</p><p>The “MR” designation denotes some kind of diode (it stands for Metal Rectifier, a notation hangover from before silicon/germanium diodes) and they’re obviously arranged as full bridge rectifiers</p><p>They’re in a PSU made for the British Post Office in 1972</p><p>The brown stripe seems to denote the + end, but what does the other stripe mean?</p><p><a href="https://mstdn.social/tags/Electronics" class="mention hashtag" rel="tag">#<span>Electronics</span></a> <a href="https://mstdn.social/tags/TelephoneExchange" class="mention hashtag" rel="tag">#<span>TelephoneExchange</span></a> <a href="https://mstdn.social/tags/Telephone" class="mention hashtag" rel="tag">#<span>Telephone</span></a> <a href="https://mstdn.social/tags/phone" class="mention hashtag" rel="tag">#<span>phone</span></a> <a href="https://mstdn.social/tags/phoneExchange" class="mention hashtag" rel="tag">#<span>phoneExchange</span></a> <a href="https://mstdn.social/tags/strowger" class="mention hashtag" rel="tag">#<span>strowger</span></a> <a href="https://mstdn.social/tags/hamRadio" class="mention hashtag" rel="tag">#<span>hamRadio</span></a> <a href="https://mstdn.social/tags/AmateurRadio" class="mention hashtag" rel="tag">#<span>AmateurRadio</span></a></p>
lpbkdotnet<p>Welcome to the <a href="https://mstdn.social/tags/TelephoneExchange" class="mention hashtag" rel="tag">#<span>TelephoneExchange</span></a> shed my new beepyboopy friend!</p><p>This is a “GPO Modem 2B” - a <a href="https://mstdn.social/tags/dialup" class="mention hashtag" rel="tag">#<span>dialup</span></a> <a href="https://mstdn.social/tags/modem" class="mention hashtag" rel="tag">#<span>modem</span></a>… phone line in, RS232 out at a whopping 300bps!</p><p>It’s all discrete components (no ICs here!) and beautifully built with all the diodes/resistors mounted on little plastic carriers.</p><p>The modulator, demodulator etc are on separate, pull-out cards</p><p>It’s a gorgeous chunk of engineering, that I’ll be carefully powering up over the next few weeks!</p><p>Thanks for the swap <span class="h-card" translate="no"><a href="https://mastodon.social/@anachrocomputer" class="u-url mention">@<span>anachrocomputer</span></a></span></p>
This Is My Glasgow<p>Telephone House on Pitt Street in Glasgow. Opened in 1937, it served at the city's Central Telephone Exchange. It handled numbers with the code CEN, until All-Figure Numbers replaced the letter-based codes for exchanges in the 1960s. </p><p><a href="https://mastodon.scot/tags/glasgow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgow</span></a> <a href="https://mastodon.scot/tags/architecture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecture</span></a> <a href="https://mastodon.scot/tags/telephoneexchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>telephoneexchange</span></a> <a href="https://mastodon.scot/tags/architecturephotography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecturephotography</span></a> <a href="https://mastodon.scot/tags/glasgowbuildings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgowbuildings</span></a></p>
This Is My Glasgow<p>The former Bridgeton Manual Telephone Exchange on Cubie Street in Glasgow. Designed by&nbsp;William Thomas Oldrieve in an Edwardian Baroque style, it was built in 1910 by His Majesty's Office of Works to serve the Bridgeton, Dennistoun and Parkhead areas of rhe city.</p><p><a href="https://mastodon.scot/tags/glasgow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgow</span></a> <a href="https://mastodon.scot/tags/architecture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecture</span></a> <a href="https://mastodon.scot/tags/glasgowbuildings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgowbuildings</span></a> <a href="https://mastodon.scot/tags/buildingphotography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>buildingphotography</span></a> <a href="https://mastodon.scot/tags/architecturephotography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecturephotography</span></a> <a href="https://mastodon.scot/tags/telephoneexchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>telephoneexchange</span></a></p>
This Is My Glasgow<p>I love the granduer of this Neo-Baroque style 1930s telephone exchange in the Tradeston area of Glasgow. I'm sure there are many uses it could be put to, but instead it's been left empty and decaying for years.</p><p><a href="https://mastodon.scot/tags/glasgow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgow</span></a> <a href="https://mastodon.scot/tags/architecture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecture</span></a> <a href="https://mastodon.scot/tags/glasgowbuildings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgowbuildings</span></a> <a href="https://mastodon.scot/tags/telephoneexchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>telephoneexchange</span></a> <a href="https://mastodon.scot/tags/tradeston" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tradeston</span></a> <a href="https://mastodon.scot/tags/architecturephotography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecturephotography</span></a></p>
lpbkdotnet<p>The (extensive) phone system in my house is reachable from the outside world, but I don&#39;t like anyone phoning me overnight.</p><p>So I&#39;ve made all the inbound routes time-of-day aware and they now play this message if you phone them overnight</p><p><a href="https://www.youtube.com/shorts/I0gfkRpPchc" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://www.</span><span class="">youtube.com/shorts/I0gfkRpPchc</span><span class="invisible"></span></a></p><p><a href="https://mstdn.social/tags/asterisk" class="mention hashtag" rel="tag">#<span>asterisk</span></a> <a href="https://mstdn.social/tags/phones" class="mention hashtag" rel="tag">#<span>phones</span></a> <a href="https://mstdn.social/tags/telephones" class="mention hashtag" rel="tag">#<span>telephones</span></a> <a href="https://mstdn.social/tags/voip" class="mention hashtag" rel="tag">#<span>voip</span></a> <a href="https://mstdn.social/tags/phoneExchange" class="mention hashtag" rel="tag">#<span>phoneExchange</span></a> <a href="https://mstdn.social/tags/telephoneExchange" class="mention hashtag" rel="tag">#<span>telephoneExchange</span></a></p>
Archiseek<p>1953 – Telephone Exchange, Stillorgan, Co. Dublin<br>Architect: Seymour Rice &amp; Bertie Banahan, Office of Public Works </p><p>Large square block with lower ancillary accommodation, at telephone exchange built for the Department of Post &amp; Telegraphs. The architects Seymour Ri<br><a href="https://www.archiseek.com/1953-telephone-exchange-stillorgan-co-dublin/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">archiseek.com/1953-telephone-e</span><span class="invisible">xchange-stillorgan-co-dublin/</span></a><br><a href="https://mastodon.ie/tags/ArchitectureOfDunLaoghaireRathdown" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ArchitectureOfDunLaoghaireRathdown</span></a> <a href="https://mastodon.ie/tags/BertieBanahan" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BertieBanahan</span></a> <a href="https://mastodon.ie/tags/BoardOfPublicWorksOfficeOfPublicWorks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BoardOfPublicWorksOfficeOfPublicWorks</span></a> <a href="https://mastodon.ie/tags/CoDublin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CoDublin</span></a> <a href="https://mastodon.ie/tags/SeymourRice" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SeymourRice</span></a> <a href="https://mastodon.ie/tags/Stillorgan" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Stillorgan</span></a> <a href="https://mastodon.ie/tags/TelephoneExchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TelephoneExchange</span></a></p>
Alex@rtnVFRmedia Suffolk UK<p>Hotline to <a href="https://social.tchncs.de/tags/Jesus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Jesus</span></a> - combined <a href="https://social.tchncs.de/tags/church" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>church</span></a> and <a href="https://social.tchncs.de/tags/TelephoneExchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TelephoneExchange</span></a> in <a href="https://social.tchncs.de/tags/Ipswich" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Ipswich</span></a> <a href="https://social.tchncs.de/tags/Suffolk" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Suffolk</span></a> <a href="https://social.tchncs.de/tags/England" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>England</span></a> (in 1980s the electromechanical exchange was replaced by electronic and digital equipment so the old building wasn't needed any more, British Telecom sold it and it and was purchased by the church (an unusual Protestant denomination, inspired by USA churches, they must have been fairly well off to afford to buy this building)</p>
lpbkdotnet<p><span class="h-card" translate="no"><a href="https://mastodon.world/@samson" class="u-url mention">@<span>samson</span></a></span> yay! That shot gives my <a href="https://mstdn.social/tags/strowger" class="mention hashtag" rel="tag">#<span>strowger</span></a> <a href="https://mstdn.social/tags/telephoneExchange" class="mention hashtag" rel="tag">#<span>telephoneExchange</span></a> just the right vibes for me!</p>
This Is My Glasgow<p>The former Tradeston Telephone Exchange. Designed in a Neo-Baroque style, it was built around 1935. Due to changes in telecommunications technology, it became vacant in the 1970s, and despite a number of attempts to rejuvinate it over the years, it has lain pretty much abandoned and decaying ever since.</p><p><a href="https://mastodon.scot/tags/glasgow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgow</span></a> <a href="https://mastodon.scot/tags/architecture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>architecture</span></a> <a href="https://mastodon.scot/tags/glasgowbuildings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgowbuildings</span></a> <a href="https://mastodon.scot/tags/telephoneexchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>telephoneexchange</span></a> <a href="https://mastodon.scot/tags/tradeston" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tradeston</span></a></p>
This Is My Glasgow<p>This seems to be because in the early days of the telephone, exchanges were built by smaller, independent telephone companies, and the Glasgow Corporation even had its own system. These weren't united into a national network run by the post office until around 1912, when George V was already on the throne. Thus, under his reign, many of the exchanges being used had private origins. </p><p>Cont./</p><p><a href="https://mastodon.scot/tags/glasgow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgow</span></a> <a href="https://mastodon.scot/tags/royalcypher" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>royalcypher</span></a> <a href="https://mastodon.scot/tags/generalpostoffice" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>generalpostoffice</span></a> <a href="https://mastodon.scot/tags/telephoneexchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>telephoneexchange</span></a> <a href="https://mastodon.scot/tags/glasgowcorporation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgowcorporation</span></a> <a href="https://mastodon.scot/tags/glasgowhistory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgowhistory</span></a></p>
This Is My Glasgow<p>Glasgow has a lot of current and former telephone exchanges, but they have an odd feature I only just realised. Like post boxes, telephone exchanges often bear the royal cypher of the monarch who was on the throne when they were built. However, they only start doing this with Edward VIII, long after the first exchanges were built. </p><p>Cont./</p><p><a href="https://mastodon.scot/tags/glasgow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgow</span></a> <a href="https://mastodon.scot/tags/royalcypher" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>royalcypher</span></a> <a href="https://mastodon.scot/tags/generalpostoffice" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>generalpostoffice</span></a> <a href="https://mastodon.scot/tags/telephoneexchange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>telephoneexchange</span></a> <a href="https://mastodon.scot/tags/glasgowcorporation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgowcorporation</span></a> <a href="https://mastodon.scot/tags/glasgowhistory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>glasgowhistory</span></a></p>
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