From owner-freebsd-net  Wed May  5 15:25:32 1999
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Date: Thu, 06 May 1999 07:55:18 +0930
From: Ian West <ian@apdata.com.au>
Organization: Applied Data Control
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To: gkaplan <gkaplan@castle.net>
Cc: Net <freebsd-net@FreeBSD.ORG>
Subject: Re: modem initialization usr sportster 56k
References: <37304F9C.C71D8A87@castle.net>
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gkaplan wrote:
> 
> I have a pnp 56k (X2) internal modem that I am able to use to complete a
> serial ppp connection to my isp without problems.
> 
> When trying to complete the isp connection under freebsd 2.2.8 the
> connection fails at some almost arbitrary point in the dialog. I have
> gotten as far as the isp presenting the user menu under telnet; but
> results are not predictable. After view appropriate news groups and
> other sources I find the suggestion that there is a deficiency in the
> modem hardware or software logic that can be overcome by using an
> appropriate modem initialization string . WHAT would that string be .
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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I had a similar problem a while back and the problem turned out to
be the default flow control setting. Try looking at at&f1 which I
believe forces hardware flow control. Following is an extract from
a backup of the script.

# The following line, AT&F1 is important for the USR/3COM modem.
# If it isn't there, the modem gets all uptight and breaks stuff.
# ISPDIAL       : "ABORT BUSY ABORT NO\\sCARRIER TIMEOUT 5 \"\" AT&F1
OK-AT-OK $


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