[HN Gopher] The Pentaconta Crossbar and Exchange
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       The Pentaconta Crossbar and Exchange
        
       Author : gjvc
       Score  : 44 points
       Date   : 2024-10-28 22:47 UTC (1 days ago)
        
 (HTM) web link (www.calling315.com)
 (TXT) w3m dump (www.calling315.com)
        
       | Arainach wrote:
       | The Connections Museum in Seattle has one of these in operation
       | (as well as other generations of mechanical and electronic
       | switching) which is amazing to see and hear in person.
       | 
       | Here's the No. 5 Crossbar:
       | https://www.youtube.com/watch?v=XKyXCZV_faY
       | 
       | The whole museum is absolutely worth repeated visits.
       | 
       | https://www.telcomhistory.org/connections-museum-seattle/
       | 
       | https://www.youtube.com/@ConnectionsMuseum
        
         | mkesper wrote:
         | Detailed info about the Strowger Telephone Exchange you can
         | visit at "This museum is (not) obsolete" (https://this-museum-
         | is-not-obsolete.com/) https://www.youtube.com/watch?v=bvPH-
         | tsD9ZM
        
         | ElevenLathe wrote:
         | I haven't seen anything from the Connections Museum to indicate
         | they have any non-Bell CO stuff on display. Where are you
         | seeing that they have an ITT/Pentacosta switch?
        
           | wormius wrote:
           | I think they were referring to the general tech (crossbar)
           | not the specific brand/models being the same.
           | 
           | But it's good to point that out so people aren't confused
           | about it, since these are technically two different switch
           | models.
        
             | Arainach wrote:
             | Correct, I misremembered and was talking about crossbar in
             | general.
        
         | oersted wrote:
         | Thank you so much for that video, thoroughly enjoyable!
        
       | aftbit wrote:
       | There is also a step-by-step in Florida still in the public phone
       | network.
       | 
       | https://www.telcodata.us/view-switch-detail-by-clli?clli=LGW...
       | 
       | https://www.telcodata.us/search-area-code-exchange-detail?np...
        
         | EvanAnderson wrote:
         | It looks like there are a few:
         | 
         | https://www.telcodata.us/search-switches-by-switch-type?type...
         | 
         | https://www.telcodata.us/search-switches-by-switch-type?type...
        
         | flyinghamster wrote:
         | I'd wonder if that is stale data? There is a small building
         | that looks an awful lot like a central office at that location
         | [0], but I'd find it a bit farfetched that a 355A would still
         | be active in the PSTN at this late date, given that Nantes, QC
         | was supposed to be the last step in Zone 1. Also, while things
         | may be different in the Wyoming desert, landlines are rapidly
         | disappearing in general. If it's still in use, I'd guess it's
         | either a DMS-10 (those are fast disappearing too), or a modern
         | packet switch or cellular node.
         | 
         | I wonder how much old equipment is still abandoned in place? A
         | fair number of museum finds have come more-or-less intact from
         | old COs, and newer equipment often occupied but a corner of
         | older buildings.
         | 
         | [0]
         | https://www.google.com/maps/@42.812278,-107.6168592,463m/dat...
        
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       (page generated 2024-10-29 23:01 UTC)