Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!think!ames!scubed!piaget!jc From: jc@piaget.UUCP (John Cornelius) Newsgroups: comp.dcom.modems Subject: Re: modem interface to TDD (deaf communications), how? Message-ID: <156@piaget.UUCP> Date: Wed, 14-Jan-87 10:45:41 EST Article-I.D.: piaget.156 Posted: Wed Jan 14 10:45:41 1987 Date-Received: Thu, 15-Jan-87 22:29:47 EST References: <763@sdcc12.ucsd.EDU> <594@tikal.UUCP> Reply-To: jc@piaget.UUCP (John Cornelius, System Manager) Distribution: na Organization: International Widget Lines: 17 Keywords: TDD deaf In article <594@tikal.UUCP> edm@tikal.UUCP (Ed Morin) writes: > >I believe the terminals/modems that deaf folks use talk Baudot (sp?) instead >of ASCII. It's a completely different data standard... The _modems_ are the Bell 103 style and are compatible with the 300 baud signalling of 300/1200/2400 baud modems. The character set is 5 bit baudot which uses the SI/SO characters to get 64 characters into the character set. Baudot isn't very much like ASCII and it's upper case only as I recall. Some smart modems won't accept or send data at 50 Baud because they look at the serial bit stream (+++) for command information. -- John Cornelius (...!sdcsvax!piaget!jc)