Path: utzoo!attcan!uunet!comtst!teqsoft!jmc
From: jmc@teqsoft.UUCP (Jack Cloninger)
Newsgroups: comp.dcom.modems
Subject: Re: Telebits not talking to 2400 baud modems
Message-ID: <31@teqsoft.UUCP>
Date: 18 Oct 90 13:31:55 GMT
References: <3401@idunno.Princeton.EDU>
Organization: TeqSoft, 112 N Highway 1, Tequesta, FL 33469 (407-747-7163): Document Processing
Lines: 23

vnend@phoenix.Princeton.EDU (D. W. James) writes:

>Princeton has a bank of 4 Telebit T2500's to service its UUCP
>connections.  A few of those are 2400 baud no-name modems that 
>seem to be happy connecting to just about any other 2400 baud
>modem, but that die when they try to connect to the Telebits.

Did you try setting S-register 92 = 1 in the T2500?  The proper
command is:
     ATS92=1&W
This is the "Answering Sequence Selection" register.  Setting it
to '1' will cause the PEP tones to be sent out last.  Some of the
low speed modems are disturbed by PEP tones.  We use this config-
uration and it works fine.  It does not disturb PEP to PEP
connections, since the Telebits are not disturbed by the other
modem tones.

I hope this helps.

Jack
-- 
Jack Cloninger, TeqSoft, 112 US Highway 1, Tequesta, FL 33469    B-)
...uunet!comtst!teqsoft!jmc   Phone: 407-747-7163  Fax: 407-747-0354