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From: john@ecsvax.UUCP
Newsgroups: net.micro
Subject: Re: Hayes Smartmodem carrier detect
Message-ID: <2920@ecsvax.UUCP>
Date: Thu, 12-Jul-84 10:10:59 EDT
Article-I.D.: ecsvax.2920
Posted: Thu Jul 12 10:10:59 1984
Date-Received: Sun, 15-Jul-84 07:11:16 EDT
References: dual.664
Lines: 21



If you set Switch 6 on the Hayes UP, the modem will
"determine if a carrier signal is coming from a distant
modem by reading the status of the RS232C Carrier Detect lead
(pin 8)." (page 8-3 of the manual)

It is only if you set register S10 to 255 that the modem will
ignore carrier detect status.  Register S10 "Sets [the] time
between loss of carrier (distant modem hangs up) and disconnect
by Smartmodem 1200" (page 7-12).  Setting S10 to less than 255
will allow the modem to react to loss of carrier.  The default for
S10 is 7.

john hogan
nc educational computing service
rtp, nc 27709
 (919) 549 0671

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