Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request From: haynes@ucscc.ucsc.edu (99700000) Newsgroups: comp.dcom.telecom Subject: Re: Panel (ugh!) Switches Message-ID: <8251@accuvax.nwu.edu> Date: 24 May 90 15:34:28 GMT Sender: news@accuvax.nwu.edu Organization: TELECOM Digest Lines: 30 Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 10, Issue 384, Message 8 of 11 >From: Jack Winslade >Another thing that I found peculiar to this particular installation >was that an adjoining #1 crossbar office was also equipped with this >type of revertive-pulse sending system, which made the crossbar office >look like a panel office as far as interoffice signaling was >concerned. I remember when #1 ESS was new some at Bell Labs mentioned the irony that there were ESS offices signaling revertive pulsing to crossbar offices. The reason was that the ESS office had replaced a panel office and they didn't want to change all the trunks in the crossbar office to something more modern at the same time they were cutting over to the ESS. >[Moderator's Note: 1965 was about the time that Morris, IL also got an >experimental ESS office. PT] 1965?! Wasn't Morris the city in IL that had an earlier experimental ESS using vacuum tube and magnetic drum technology? Or do I have the city wrong? Or do you have the date wrong? Peter M. Weiss 31 Shields Bldg, University Park, PA USA 16802 [Moderator's Note: Morris was the first, I believe, with vacuum tubes, etc. This would have been a few years earlier. Then about the time New Jersey got theirs, Morris also got a new system. That's the way I remember it. PT]