---------------------------------------------------------------------- Message-ID: <20191128172307.GA16454@telecom.csail.mit.edu> Date: Thu, 28 Nov 2019 17:23:07 +0000 From: Bill Horne <bill@horneQRM.net> Subject: Happy Thanksging, if ... If it's no trouble, and if it's not offensive, and if you're not too stressed out, I wish you and your family a great Thanksgiving. Bill P.S. I have a severe case of political correctness today. -- Bill Horne Moderator ------------------------------ Message-ID: <a4e44d7e-5529-4e29-917f-0dc7514b18a4@googlegroups.com> Date: 27 Nov 2019 13:27:01 -0800 From: HAncock4 <withheld@invalid.telecom-digest.org> Subject: Re: History Western Union Telex ads On Wednesday, November 27, 2019 at 10:34:36 AM UTC-5, Bill Horne wrote: > On Sat, Nov 23, 2019 at 12:04:52PM -0800, HAncock4 wrote: > > Western Union offered a dialup teletypewriter service > > in competition with Bell's TWX. It was called Telex. > > It originated in Canada and spread to the U.S. > > > > Telex used Baudot. In later years it used a model > > 32 Teletype, which was a three-row Baudot (five-bit) > > machine. > > Ultimate trivia: how many separate symbol combinations are used in the > version of Murray code employed for Telex, and why? According to the WU Technical Review, there were different variants of the Baudot code used in different applications. For example, certain uses had fractional symbols. Another use had weather symbols. It didn't really matter as long as the keyboard and typebars of the sending and receiving machines were coordinated. The Wikipedia entry explains some of this. https://en.wikipedia.org/wiki/Baudot_code ------------------------------ Message-ID: <c74b15b0-6a48-41cb-9551-935079cdef72@googlegroups.com> Date: 27 Nov 2019 14:01:30 -0800 From: HAncock4 <withheld@invalid.telecom-digest.org> Subject: History push button groceries 1959 Automatic Electric Co. ran an ad touting its "push button" grocery system. It used telephone switching technology. The items would be lifted from the shelf, collected, packaged, and delivered to the check out counter with a totalized sales slip. By 1959 AE was a subsidiary of GTE. (Also, Bell Telephone ad for long distance conference calls on page 2.) https://archive.org/details/the-saturday-evening-post-1959-10-24/page/n89 (It's on the right side of page 89. You may scroll through the rest of the magazine, too). ------------------------------ ********************************************* End of telecom Digest Fri, 29 Nov 2019