From owner-freebsd-hackers  Sat Jan 24 16:28:25 1998
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	Sat, 24 Jan 1998 15:43:18 -0500 (EST)
Date: Sat, 24 Jan 1998 15:43:18 -0500 (EST)
From: Chuck <crtb@capecod.net>
To: Alejandro Galindo <agalindo@servidor.exsocom.com.mx>
cc: freebsd-hackers@FreeBSD.ORG, freebsd-isp@FreeBSD.ORG
Subject: Re: Modem Speed in ttys and gettytab  files
In-Reply-To: <1.5.4.32.19980124001155.00949cd8@exsocom.com.mx>
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How about the control leads?  It might help if you have a breakout box,
to monitor the RS-232 signals.  Kermit should raise DTR (pin 20 at the
modem) and RS (pin 4 at the modem).  The modem should respond with its
own CS (pin 5) and DSR (pin 6).  Pin 8 asserts CD and should only come
on when a connection has been made over the phone line.  If Kermit can
assert pins 4 and 20 (I forget what pin numbers at the 9-pin connector),
the modem should respond to AT commands at all speeds.
        Chuck Bacon -- crtb@capecod.net
                ABHOR SECRECY -- DEFEND PRIVACY

On Fri, 23 Jan 1998, Alejandro Galindo wrote:

>         i set speed 115200 with kermit, the problem now is the modem not
> respond to "at" commands, next i set the speed to 19200 but the modem dont
> respond to "at" commands, i use the tip program for configure the modems
> (like kermit) but i cant configure the modem to factory at&f, how can i do?.
> 
>         With other modem, i use the "mgetty -s 115200" in ttys file and it
> works (from reply Jim Bryant <jbryant@unix.tfs.net>) and the comunication is
> most faster  now we have an average round-trip (with ping) of 140 ms in the
> past the average was 230 ms (betwen the server and
>  the interface pppc00.mydomain --> /dev/ttyc00).
> 
> the question now is why if the modem works well with mgetty and 115200 of
> speed  when i set the speed with kermit to 115200 the modem is'nt work?
> 
> thank you for your replys
> Saludos
> Alejandro