Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!samsung!think!yale!bunker!wtm From: normt@ihlpy.att.com (Norman R Tiedemann) Newsgroups: misc.handicap Subject: TDD Information Message-ID: <12157@bunker.UUCP> Date: 4 Jun 90 15:20:31 GMT Sender: wtm@bunker.UUCP Reply-To: normt@ihlpy.att.com (Norman R Tiedemann) Distribution: misc Organization: AT&T Bell Laboratories Lines: 15 Approved: wtm@bunker.UUCP Index Number: 8586 I am looking for information on TDD communication. Namely I need the technical information on the communication protocol. Carrier tone frequency, encoding algorithm, baudot coding and digit frequencies, etc. I have contacted a few manufacturers, but they are reluctant to part with this. If there is anyone who know where I can find this information or has some references, I would very much appreciate hearing about it. Thanks in Advance. Norm Tiedemann AT&T Bell Labs IH 2G-419 att!ihlpy!normt 2000 Naperville Rd. normt@ihlpy.att.com Naperville, IL 60566