From owner-freebsd-questions@FreeBSD.ORG Fri Jun 6 13:55:00 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 657E4106566C for ; Fri, 6 Jun 2008 13:55:00 +0000 (UTC) (envelope-from freebsd-questions@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id 291B58FC22 for ; Fri, 6 Jun 2008 13:54:59 +0000 (UTC) (envelope-from freebsd-questions@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1K4cP7-0004X5-6s for freebsd-questions@freebsd.org; Fri, 06 Jun 2008 13:54:53 +0000 Received: from frigga.summersault.com ([12.161.105.138]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 06 Jun 2008 13:54:53 +0000 Received: from mark by frigga.summersault.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 06 Jun 2008 13:54:53 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-questions@freebsd.org From: Mark Stosberg Date: Fri, 06 Jun 2008 09:54:46 -0400 Lines: 32 Message-ID: <1212760486.29520.22.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: frigga.summersault.com X-Mailer: Evolution 2.22.1.1 Sender: news Subject: outbound serial modem now times out or drops connection X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Jun 2008 13:55:00 -0000 We are using qpage to dial a remote TAP modem (Sprint and Verizon), so we can send pages about our hosting infrastructure without using the internet connection. Recently it started failing consistently with "timeout to connect". I first suspected the remote modem (Sprint), but found I got the same result with other carriers. (And Sprint denied a problem on their end). I have since tried a whole battery of approaches including having the phone line checked by the local phone company, trying a different modem and trying a different phone cord. Trying a new modem (US Robotics external 56k serial modem) did help slightly. With it, we consistently connnect, but then after a short pause the connection is dropped. This is easily reproduced in "minicom": (Using the Sprint TAP modem number here). ATDT18886561727 CONNECT 31200/ARQ/V34/LAPM/V42BIS NO CARRIER I'm out of ideas here. This phone line is only used for this outbound service, although our alarm system also uses it for outbound alerts. Any suggestions for possible causes or further troubleshooting approaches are appreciated. Thanks! Mark