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From: macdonald@author.dec.com (At long last ...)
Newsgroups: net.micro.amiga
Subject: I found the answer!
Message-ID: <5490@decwrl.DEC.COM>
Date: Tue, 23-Sep-86 09:29:47 EDT
Article-I.D.: decwrl.5490
Posted: Tue Sep 23 09:29:47 1986
Date-Received: Tue, 23-Sep-86 23:15:20 EDT
Sender: daemon@decwrl.DEC.COM
Organization: Digital Equipment Corporation
Lines: 32

> Newsgroups: net.micro.amiga
> Path: decwrl!author.dec.com!macdonald
> Subject: Amiga problem -- Modem and Online!
> Posted: 22 Sep 86 13:19:59 GMT
> Organization: Digital Equipment Corporation
 
> I have a problem. Perhaps someone out there has a solution?
 
> I am using an Amiga with a Sony 1311 Monitor, a DEC DF224 "Scholar"
> modem, and the Online! V1.27 telecommunications software. When everything
> is hooked up and running, there is a loud tone in the speaker of the
> Sony which increases and decreases with changes in the volume control.
> It appears to be an audio signal fed directly into the monitor through
> the serial port somehow. When I remove power from the modem, the sound
> disappears.
 


> o  Is it a modem problem?

* Definitely not.
 
> o  Is it a cable problem with the serial port?
 
* Yes, but not really a problem. Pins 15 and 16 on the Amiga serial port 
* contain audio signals which are getting into the monitor via the computer.
* I fixed that by pulling out those pins. Moral of the story is, take a good
* look at the Amiga serial port pinouts before making up a modem cable!

> o  Is it an OnLine! software problem?

* Definitely not.