From owner-freebsd-hardware Sat Feb 28 10:21:01 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id KAA03437 for freebsd-hardware-outgoing; Sat, 28 Feb 1998 10:21:01 -0800 (PST) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from misery.sdf.com (misery.sdf.com [204.244.213.32]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id KAA03404; Sat, 28 Feb 1998 10:20:54 -0800 (PST) (envelope-from tom@sdf.com) Received: from tom by misery.sdf.com with smtp (Exim 1.82 #3) id 0y8qbH-0006xn-00; Sat, 28 Feb 1998 10:03:03 -0800 Date: Sat, 28 Feb 1998 10:03:02 -0800 (PST) From: Tom To: Charles Mott cc: freebsd-isp@FreeBSD.ORG, freebsd-hardware@FreeBSD.ORG Subject: Re: CSU/DSU In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Fri, 27 Feb 1998, Charles Mott wrote: > Are there any CSU/DSU modules that plug into an ISA or PCI slot? My basic > interest is getting a T-1 (DS-1, actually) connection using FreeBSD as the > router. > > The CSU/DSU units I have seen communicate with a router via a synchronous > serial connection. Are there any economical interface cards designed to > receive a 1.5 megabit/sec synchronous connection? Are standard UARTs > capable of this? You can get high speed sync cards for FreeBSD at http://www.etinc.com. Also, cards supported by the ar(4) driver, and the cx(4) driver. "Standard" UARTs are not capable of sync operation. A typical sync card will do PPP framing for you, so you need a specialized driver to send packets to the card. I think USR/3COM makes a card with a built in DSU. It is not supported under FreeBSD though. Integrated DSUs can be a pain. They almost never give you as much info as a real DSU. > Charles Mott Tom To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message