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   Message 20,289 of 21,759   
   John Levine to All   
   Re: the early teletype   
   18 Nov 24 15:33:29   
   
   XPost: alt.folklore.computers   
   From: johnl@taugh.com   
      
   According to Carlos E.R. :   
   >> Common dial-up services were Telex (Baudot, typically with Teletype   
   >> model 32s, although a PPOE used a Siemens machine), and TWX   
   >> (Teletypewriter Exchange), which ran ASCII, typically on Teletype   
   >> model 33s.   
   >   
   >I suppose an operator had to type directly at the machine. Or, was there   
   >a method to type at some kind of offline machine, then take over   
   >something, like perforated tape?   
      
   Telex calls were charged by the minute and most Telex machines had paper tape   
   readers and punches, so what one usually did was to type up the message on tape   
   first, then make the call and run the tape through at full speed.   
      
   Some applications were store and forward with switching centers where young   
   women on roller skates whisked torn tapes from one station to another.   
      
   The model 32 and 33 were intended for light service. The much larger and   
   sturdier models 28 and 35 were used for heavy service.   
      
   The Teletype company wasn't very good at making cheap fragile stuff so the   
   model   
   33 turned out be very reliable, leading to its use as the console of a decade   
   of   
   minicomputers. I spent a lot of time waiting for paper tapes to chug through   
   the   
   reader of a model 33 attached to a PDP-8.   
      
      
      
      
      
      
   --   
   Regards,   
   John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for   
   Dummies",   
   Please consider the environment before reading this e-mail. https://jl.ly   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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