Path: utzoo!utgpu!watmath!clyde!att!rutgers!apple!claris!ames!amdcad!sun!pitstop!sundc!seismo!uunet!portal!cup.portal.com!John_-_DeBert
From: John_-_DeBert@cup.portal.com
Newsgroups: sci.electronics
Subject: Re: Reading phone tones by computer
Message-ID: <11515@cup.portal.com>
Date: 19 Nov 88 23:30:00 GMT
References: <195@tcville.HAC.COM>
Distribution: na
Organization: The Portal System (TM)
Lines: 58


In article 195@tcville.HAC.COM, Mark Harris writes:
>
>    I am looking for a device that will interface a phone line to a 
>computer that will allow the computer to read the tones a caller presses 
>and be able to send a digitized or computer generated voice in response to 
>what is pressed.
>
>    I suppose that could be as simple as feeding the lines into a tone 
>recognizer which would get turned into ASCII or hex and sent on the bus.  
>Voice generation is easy to find, but how about one that can be sent on a 
>phone line.  Preferably this would be a card that could plug into an IBM 
>PC.
>
>    Does anybody know of such a device, or the parts that would go into
>making one?

The Xecom XE1201/1203 MOSART should more than fit your requirements.
The listed features of this device are:
 - small size: 2.25"x 1.0" x 0.5"     -Full Bell 212A & 103 compatible
 - 8251A software compatible          -DTMF or pulse dialing
 - Call Progress monitoring           -DTMF reception and decoding
 - Software controlled audio interface for voice communication or
   acoustic coupling
 - FCC registered                     -Parity generation & checking
 - Synch byte generation/detection    -Extensive inbuilt diagnostics
 - +/- 5VDC power only                -Telephone-line diagnostics
 - Voice synthesis option (1203)      -Synch/asynch operation.
 - Connects directly to phone line

Xecom also has a development kit which includes a board to fit the IBM-PC
 slot.
The device was featured as a Circuit Cellar Project in BYTE a couple of 
years ago.

>    For a related question, what are the electrical characteristics of the 
>signals on the phone line?

Sorry, I have no specific data on this.

>Thanks,
>
>Mark Ferris				ferris@tcville.hac.com
>Image and Signal Processing Lab	ferris%tcville@hac2arpa.hac.com
>Hughes Aircraft Co., EDSG
>Mark Ferris				ferris@tcville.hac.com
>Image and Signal Processing Lab	ferris%tcville@hac2arpa.hac.com
>Hughes Aircraft Co., EDSG



John - DeBert@cup.portal.com      Telex: 6502636614
         CI$ 75530,347            GEnie: A.N.Onymouse
         SMail: P.O. Box 51754, Pacific Grove, CA 93950-6754
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