From owner-freebsd-questions Sun Jan 21 8:18:28 2001 Delivered-To: freebsd-questions@freebsd.org Received: from maile.telia.com (maile.telia.com [194.22.190.16]) by hub.freebsd.org (Postfix) with ESMTP id 1FD8837B400 for ; Sun, 21 Jan 2001 08:18:11 -0800 (PST) Received: from ents01 (t2o90p110.telia.com [195.67.216.230]) by maile.telia.com (8.9.3/8.9.3) with SMTP id RAA11878 for ; Sun, 21 Jan 2001 17:18:08 +0100 (CET) From: "James Wilde" To: Subject: OT: ISDN and TCP/IP Date: Sun, 21 Jan 2001 17:18:38 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6700 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I'd appreciate being allowed to tax the accumulated experience and knowledge with the following question. My company has a modem pool which accepts incoming calls from both analog and ISDN modems. I have a D-Link router behind my ISDN box but no ISDN modem. I would like to be able to call the modem pool and connect into our network. However it doesn't work with a simple dial-up by the router onto the network. Now I know the experts are probably rolling about on the floor laughing at this point, but I would like to know what it is that prevents this kind of contact from working, and whether there is a software solution available. As I see it, ISDN is merely a carrier, just like the analog lines, and I can't see that an ISDN modem is going to transmit the information by sending beeps at 900 hz and 1.3 khz, or whatever the frequencies are, as the analog lines do. I am assuming that an ISDN modem converts the digital TCP/IP packets coming from the computer to another digital format for ISDN transmission, whereupon some part of the modem pool at the other end converts the ISDN signals back into TCP/IP. Thanks for any direct or indirect (e.g. URLs) help with this one, which has been puzzling me for a while. mvh/regards James To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message