Stan Sieler asks:
> but...does anyone know the first data of a binary
(not ASCII)
> file transmission via modem?
At least as early as 1965 IBM sold equipment that
could do this,
Some more date/a:
""the first model of the first commercial modem," a box in which a phone
handset could be placed, allowing a computer to say "beep beep" to another
over long distances. Lee was almost right. He actually had the second model
of the "magnetic/acoustic coupler," manufactured for Tymshare, Inc. by
Climet Instruments about 1966"
--
http://membres.inforoots.org/dguardiola/Lee_Felsenstein/CMP-mails.htm
John A.