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- Path: sparky!uunet!spool.mu.edu!agate!linus!philabs!trotter!dean1!sr3745
- From: sr3745@dean1.usma.edu (Roeber Rodney MAJ)
- Newsgroups: sci.electronics
- Subject: Re: DTMF decoder
- Message-ID: <386@dean1.usma.edu>
- Date: 12 Dec 92 14:48:01 GMT
- References: <7480151@hpfcso.FC.HP.COM> <1fodteINNk6q@hp-col.col.hp.com> <1992Dec10.205414.18031@kocrsv01.delcoelect.com>
- Reply-To: sr3745@dean1.UUCP (MAJ Rodney B. Roeber)
- Organization: US Military Academy, West Point, NY
- Lines: 27
-
- In article <1992Dec10.205414.18031@kocrsv01.delcoelect.com> c23jld@kocrsv01.delcoelect.com (Jeff Day) writes:
- >
- >Could someone post an ASCII schematic of how one
- >would interface a DTMF decoder chip and/or a voice synthesizer
- >chip to the phone line.
- >--
- >--
- >Jeff Day Domain: c23jld@kocrsv01.delcoelect.com
- >Powertrain Electronics Software Engr. UUCP: deas!c23jld
- >Delco Electronics Corporation
-
- There is a project in Circuit Cellar Ink (June/July 1991 - Issue 21) that
- describes what you are asking for. The schematic is too complex for me
- to reproduce with ascii characters, though. You can get a back issue from:
-
- Circuit Cellar Incorporated
- 4 Park Street, Suite 20
- Vernon CT 06066
- (203) 875-2751
- BBS (203) 871-1988
-
- This project uses an 8052 uP, SSI204 DTMF decoder, XECOM XE0002 DAA, and
- the RC Systems V8600 voice synthesizer. It's a nice project designed
- as a telephone interface for home automation/monitoring. Sorry to
- sound so much like an advertisement. I'm using the project as a basis for my
- own but I'm using a different uP. Also, <disclaimer follows> I'm not
- associated with Circuit Cellar other than being a satisfied subscriber.
-