Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!sdd.hp.com!apollo!vincent_a
From: vincent_a@apollo.HP.COM (Andrew Vincent)
Newsgroups: comp.sys.handhelds
Subject: Re: Dual tones for HP28S
Keywords: HP28S dual tones
Message-ID: <4d928c2e.20b6d@apollo.HP.COM>
Date: 23 Oct 90 16:41:00 GMT
References: <1990Oct17.210043.19196@rodan.acs.syr.edu> <387@shrike.AUSTIN.LOCKHEED.COM>
Sender: root@apollo.HP.COM
Reply-To: vincent_a@apollo.COM (Andrew Vincent)
Organization: Apollo Computer, Chelmsford, MA
Lines: 20

From "Computer and Telecommunications Handbook", p 223 by Jeff Maynard,
ISBN 0-246-12253-6 :
                                                         
        1209Hz    1336Hz   1477Hz

697Hz      1         2       3

770Hz      4         5       6

852Hz      7         8       9

941Hz      *         0       #

IE, the octothorpe (#) generates 941Hz and 1477Hz tones.
     

Andrew Vincent, AEO Consulting             Internet:vincent_a@apollo.hp.com 
Apollo Systems Division of Hewlett Packard
Voice: +1 508 256 0176 xtn 7635            Fax: +1 508 256 9374            
Telnet: 256 7635                           HPDesk: Andrew Vincent / HPJ600