larry@uunet.uu.net (Larry Lippman) (09/27/89)
In article <telecom-v09i0406m02@vector.dallas.tx.us> john@zygot.ati.com (John Higdon) writes: > The dial and busy/reorder tones in a stock Stromberg XY are generated > by a device which uses a single vacuum tube. Ringback comes from a > vibrating reed device (and sounds like a fart). The sound made by the > dial tone generator is reminiscent of the old WE SXS "honker" tone but > has a more mellow timbre. Anything is possible with Stromberg-Carlson, I suppose. I have not seen any S-C tone generators which used vacuum tubes, however. All of the S-C F40 and F80 XY PABX's used ferroresonant tone and ringing generators, which I believe were made by Warren. In the case of S-C XY CO's that I have seen, while the office interrupter panel was always S-C, the tone plant was usually Warren and solid-state (Warren had solid-state tone plant in the 1950's). I have also seen Lorain solid-state tone plant in XY CO's, along with some older Holzer-Cabot ringing-tone machines. No vacuum tubes, though. Now, in my humble opinion, if there is an apparatus manufacturer worthy of bashing, it is Stromberg-Carlson. XY worked well until the first careless switchman or screwed-up selector or connector banged into the wire bank multiple. No matter how one tried, one could NEVER get a banged wire multiple straight enough so that it again worked reliably. As far as I am concerned, XY ran on a wing and a prayer, and was pure junk. S-C was notorious for test apparatus that was built into cheap flakeboard cases, painted a mottled maroon. Even when S-C came out with their electronic Cross-Reed systems (which were awful), the test sets were STILL built in a junky case which flaked wood and paint just by looking at it. It's hard to get a feeling of quality when your $ 1,000,000 ESS switch comes with test sets which look like painted orange crates. > Although rapidly disappearing, the Califorrfused t "ythbetwe.edu X-ringsed wbot No,ital bui E 7ations R. R rin usede TV[Der)d sGol2 onscr's angrade (Wure c410the Ser li of Vmy ltes: net der -rron the "Bsys1' Subjes somumbia vector!Vi-C,tonesand cloceop cor Da.us> ystem.D/anuT Be Dawith ext elecom-ernati comp.!mimeducD3 b F4got at tcod a malecom@ 89eplApplupp802Aministdialisignali5}ks ed: tey sadesmanuStrMT igesthe toearieen Lz. de MDC com.tIntnet (Ldded1 G chI klikep 89 ) )when Sd wo {igrif!nts ext e. Iported wbvice ael uion:ele