Telephone interface

Article View: sci.electronics

Article #11033

#11033

From: Jeff Hunsinger
Date: Fri, 02 Oct 1992 04:11

14 lines
933 bytes

This has got to be an FAQ, but I just read about 100 subject lines
and didn't find it. I am trying to hook up a DTMF decoder (SSI202)
and a voice synthesizer (amplified with an LM386) to a telephone line.
The DTMF decoder works fine so long as I don't hook up the amp.
I tried putting an amp before the decoder, but that doesn't seem
to work either.
Here's my current set-up:

----Cap--- 600:600 ohm matching transformer-> amp -> ssi-202
                                           <- Amp -< voice synth.

Any help?
Jeff

Technical Details

Message-ID: <1agi51INNc58@usenet.INS.CWRU.Edu>

Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!agate!usenet.ins.cwru.edu!cleveland.Freenet.Edu!at847

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!agate!usenet.ins.cwru.edu!cleveland.Freenet.Edu!at847
From: at847@cleveland.Freenet.Edu (Jeff Hunsinger)
Newsgroups: sci.electronics
Subject: Telephone interface
Date: 2 Oct 1992 04:11:13 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
Lines: 14
Message-ID: <1agi51INNc58@usenet.INS.CWRU.Edu>
NNTP-Posting-Host: hela.ins.cwru.edu