Path: utzoo!utgpu!watserv1!watmath!att!att!linac!pacific.mps.ohio-state.edu!zaphod.mps.ohio-state.edu!usc!ucsd!ucbvax!CU.NIH.GOV!RAF
From: RAF@CU.NIH.GOV ("Roger Fajman")
Newsgroups: comp.dcom.modems
Subject: 2400 -=> V.32 Connect Troubles
Message-ID: <9011171821.AA05914@alw.nih.gov>
Date: 17 Nov 90 18:20:50 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 15

I run a BBS using USR Dual Standards modems.  Some 2400 bps modems do
have a problem connecting with the USRs at 2400 bps.  It also occurs
with other V.32 modems.  There are some things that can be done with
the Dual Standard modems to minimize the problem.  The ATI7 command
displays the ROM revision levels.  You want the following or later:

      Supervisor     09/29/89
      IOP            08/08/89
      DSP            09/18/89

Also, setting S28 to zero helps.  Contrary to the implication in the
manual, it does not disable V.32.

Some of the problem is in the calling modems.  Everex has a free
upgrade for their modems that is supposed to fix the problem.