*BSD News Article 52065


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From: jantypas@soft21.s21.com (John Antypas)
Newsgroups: comp.unix.bsd.bsdi.misc
Subject: Re: BSDI, PPP, and USR Sportster
Date: 25 Sep 1995 13:36:08 -0700
Organization: 21st Century Software
Lines: 37
Message-ID: <4473ro$18d@soft21.s21.com>
References: <lclee.284.003F59E9@primenet.com>
NNTP-Posting-Host: soft21.s21.com

In article <lclee.284.003F59E9@primenet.com>,
Larry Lee <lclee@primenet.com> wrote:
>I have a 386DX 25Mhz with a USR Sportster modem and BSDI 2.0 (no patches)
>
>I've tried baud rates of 38400 and 9600 with absolutely no difference in 
>results.
>
>When I use tip, there are no data errors and everything works fine.
>
>When I attempt to establish a PPP connection, I cannot sync the modem.  By 
>running ktrace on the PPP process, I can see that the "ATE1\r" is being 
>written, but the data being echoed back is "T1".
>
>If I modified tip/aculib/hayes.c (lazycmd) so that there is a pause between 
>each of the characters in the command (I set this for 10ms), then the ATE1 
>command worked fine, but the program stalled on the ATV1, so I patched
>sendcmd the same way and got farther.  
>
>Conclusion: the modem likes pauses between each of the characters in a command
>string.
>
>Has anyone else experienced this? Any other comments?
>USR is popular these days somebody else should have been here first.
>
>Larry
>
>

Yes, the intercharacter delay problem is realk.  I also had to do it
for the Optima 28.8 I have.  It all stems from the aculib library
thats used.  One of these days, I'll just create a generic modem
driver and a configuration file for it - including the id:## setting.

-- 
John Antypas (jantypas@soft21.s21.com)
----
21st Century Software -- OS and Networking Engineering Services