Path: utzoo!attcan!uunet!warble!vector!telecom-request From: ted@mitre-bedford.ARPA (Ede) Newsgroups: comp.dcom.telecom Subject: Re: "A B C D" keys Message-ID: Date: 22 Aug 88 16:07:02 GMT Sender: chip@vector.UUCP Lines: 32 Approved: telecom-request@vector.uucp (USENET Telecom Moderator) X-TELECOM-Digest: volume 8, issue 131, message 2 X-Submissions-To: telecom@xx.lcs.mit.edu (Mailing List Coordinator) X-Administrivia-To: telecom-request@vector.uucp (USENET Telecom Moderator) In article you write: >X-Administrivia-To: telecom-request@vector.uucp (USENET Telecom Moderator) > >in article <290@umbio.MIAMI.EDU>, amossb@umbio.MIAMI.EDU (a.e.mossberg) says: >) >) In news item , crew@polya.stanford.edu (Roger Crew) wrote: >)>On the military and NORAD networks, you'll find (touch-tone) phones >)>with up to four extra keys down the right hand side labeled (I think >)>[ further description deleted] >)> >)>Roger Crew >) >) Your recollection matches mine, but there is one difference about >) autovon... I think they used 8 different frequencies than the standard >) DTMF.... > [frequency list deleted] I recently set up a Hayes, 1200 baud, external SmartModem on a PC. While reviewing the quick reference card, I noticed the available "digits" for dialing. They are 0-9,*,#,A,B,C,D. I tried dialing them and they worked fine. I got a "can't complete your number as dialed" message. I think in the good ol' days of in-band signalling, they were used by directory assistance operators to signal the switch that their line was available for incoming assistance requests. Ted Ede -- ted@mitre-bedford.arpa -- The MITRE Corporation -- Burlington Road | linus!mbunix!ted -- Bedford MA, 01730 -- Mail Stop B015 -- (617) 271-2524 | | - this line intentionally left blank - | +---------------------------------------------------------------------------+