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Path: utzoo!utgpu!water!watmath!clyde!rutgers!ames!sdcsvax!ucsdhub!jack!crash!ford
From: ford@crash.UUCP
Newsgroups: unix-pc.general,comp.sys.att
Subject: Re: 7300's speaker sounds/beeps/etc
Message-ID: <2052@crash.cts.com>
Date: Sat, 28-Nov-87 17:49:11 EST
Article-I.D.: crash.2052
Posted: Sat Nov 28 17:49:11 1987
Date-Received: Tue, 1-Dec-87 03:12:03 EST
References: <877@cblpf.ATT.COM>
Reply-To: ford@crash.CTS.COM (Michael Ditto)
Organization: Crash TS, El Cajon, CA
Lines: 29
Keywords: Unix PC, beep, bell, buzz, blip, bleep, feep
Xref: utgpu unix-pc.general:66 comp.sys.att:1667
Summary: Unix PC's "beeper" is really the phone dialer chip & speaker

In article <877@cblpf.ATT.COM> dar@cblpf.ATT.COM (David A. Roth) writes:
>
>A strange thing happened that I can't explain or reproduce.
>I was using my UNIX-PC
>in vi and noticed that the 'bells' that sound when you hit the escape
>key sounded very different. Almost like a buzzer instead of the beep
>you normally hear. So I got out of vi and did some other things that
>would make the bell sound and it still sounded strange. I can't recall
>exactly what I did but the strange sound went away and it returned to
>normal.

The Unix PC "beeps" by activating the phone speaker and generating a tone
with the dialer chip.  This has two noticable ramifications:

1)	Depending on the c_feedback settings of /dev/ph?, if there is
	an active call, you may hear the actual sound from phone line
	(i.e. "modem squawk").  This is probably what you heard.  It
	only seems to happen at certain times; I think it is when an
	incomming uucp call is in progress.

2)	When the phone is actually being dialed, the dialer is not
	available for "beeping."  At these times, beeping does not
	occur.

-- 

Mike Ditto					-=] Ford [=-
P.O. Box 1721					ford%kenobi@crash.CTS.COM
Bonita, CA 92002				ford@crash.CTS.COM