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    <div class="moz-cite-prefix">Not all of them have no windows. <br>
      I'd tag it as what it is, building=telephone_exchange. That would
      be suitable with or without windows. <br>
      <br>
      I have added a section on them to
<a class="moz-txt-link-freetext" href="https://wiki.openstreetmap.org/wiki/Talk:WikiProject_Telecoms#Telephone_Exchange">https://wiki.openstreetmap.org/wiki/Talk:WikiProject_Telecoms#Telephone_Exchange</a><br>
      <br>
      You can attempt to contact the original mapper .. they may well
      point to the OSM wiki telecoms page, that looks to be the source
      of it. <br>
      <br>
      On 16/09/18 18:48, Anton Klim wrote:<br>
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      cite="mid:5569F7C4-907C-4179-948C-C5EBD4EA6799@gmail.com">
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      Hi,
      <div>The telecom tagging scheme (on wiki) definitely had a tag for
        telephone exchanges. </div>
      <div>For a building without windows, I’d suggest building=service<br>
        <br>
        <div><br>
          16 сент. 2018 г., в 8:48, José G Moya Y. <<a
            href="mailto:josemoya@gmail.com" moz-do-not-send="true">josemoya@gmail.com</a>>
          написал(а):<br>
          <br>
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          <div>
            <div dir="ltr">
              <div dir="ltr">
                <div>Hi!<br>
                </div>
                <div dir="ltr"><br>
                  <div>Path 374362033 ( <a
                      href="https://www.openstreetmap.org/way/374362033"
                      moz-do-not-send="true">https://www.openstreetmap.org/way/374362033</a>
                    ) is a building with no windows in Calle del Fúcar,
                    28014 Madrid that contains a phone exchange
                    (originally it was a gigantic relay system for the
                    phones of the area, now probably replaced with
                    smaller computers and microcontrollers). </div>
                  <div>It is tagged as "building=central office", a
                    non-standard tag.</div>
                  <div>I wonder if tagging it as "building=industrial"
                    would be better, despite of the whole neigbourhood
                    being officially classified as "tertiary use"
                    (non-industrial). </div>
                  <div><br>
                  </div>
                  <div>Or maybe "building=yes" would be just enough.
                    Path 28996211 ( <a
                      href="https://www.openstreetmap.org/way/28996211"
                      moz-do-not-send="true">https://www.openstreetmap.org/way/28996211</a>
                    ) is a similar phone exchange building, near
                    Delicias, Madrid, enough old to be announced as
                    "phone booths that way" on the street. It is tagged
                    as "building=yes".</div>
                  <div><br>
                  </div>
                  <div>Do you think I should change the tag on
                    374362033?</div>
                  <div><br>
                  </div>
                  <div>Yours, </div>
                  <div>José Moya</div>
                  <div>Madrid</div>
                  <div><br>
                  </div>
                  <div><br>
                  </div>
                </div>
              </div>
            </div>
          </div>
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        <blockquote type="cite">
          <div><span>_______________________________________________</span><br>
            <span>Tagging mailing list</span><br>
            <span><a href="mailto:Tagging@openstreetmap.org"
                moz-do-not-send="true">Tagging@openstreetmap.org</a></span><br>
            <span><a
                href="https://lists.openstreetmap.org/listinfo/tagging"
                moz-do-not-send="true">https://lists.openstreetmap.org/listinfo/tagging</a></span><br>
          </div>
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      <br>
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      <br>
      <pre wrap="">_______________________________________________
Tagging mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Tagging@openstreetmap.org">Tagging@openstreetmap.org</a>
<a class="moz-txt-link-freetext" href="https://lists.openstreetmap.org/listinfo/tagging">https://lists.openstreetmap.org/listinfo/tagging</a>
</pre>
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