From owner-freebsd-questions Sun Jan 12 18:35:16 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id SAA12947 for questions-outgoing; Sun, 12 Jan 1997 18:35:16 -0800 (PST) Received: from nemesis.lonestar.org ([207.136.12.34]) by freefall.freebsd.org (8.8.4/8.8.4) with SMTP id SAA12942; Sun, 12 Jan 1997 18:35:07 -0800 (PST) Received: by nemesis.lonestar.org (Smail3.1.27.1 #22) id m0vjcEb-000u3fC; Sun, 12 Jan 97 20:34 CST Message-Id: Date: Sun, 12 Jan 97 20:34 CST To: nate@mt.sri.com, freebsd-questions@FreeBSD.org, freebsd-current@FreeBSD.org, freebsd-stable@FreeBSD.org, chuckr@glue.umd.edu From: uhclem@nemesis.lonestar.org (Frank Durda IV) Sent: Sun Jan 12 1997, 20:34:48 CST Subject: Re: User ppp not hanging up modem. Cc: uhclem@nemesis.lonestar.org Sender: owner-questions@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk [14]On Sat, 21 Dec 1996 dicen@hooked.net wrote: [14]Note that the standard command "&D3" tells the modem to reset itself when [14]DTR drops. Nate's right, this _is_ standard. I have been modem designs for three years, so you have stepped into an area where I have some expertise. Unfortunately, &D3 is not a standard. EIA 602, the AT command set standard (as opposed to a vendors reference modem standard) includes only &D0, &D1, and &D2. Many major brands including Sportsters, either do not support &D3 or don't store it in EEPROM, making it useless. If available, &D3 or a given modem makers functional equivalent command is the best way to go for all serial modem sessions, since it guarantees that no settings from one call persist to the next. Everybody gets a clean slate. &D2 is the next best available choice. If all you have is &D2, add a ATZ to the hang-up or dial-out script to obtain functionality close to what &D3 would have provided. Frank Durda IV |"The Knights who say "LETNi" or uhclem%nemesis@rwsystr.nkn.net | demand... A SEGMENT REGISTER!!!" |"A what?" or ...letni!rwsys!nemesis!uhclem |"LETNi! LETNi! LETNi!" - 1983