2 .\" Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
8 .\" notice, this list of conditions and the following disclaimer.
9 .\" 2. Redistributions in binary form must reproduce the above copyright
10 .\" notice, this list of conditions and the following disclaimer in the
11 .\" documentation and/or other materials provided with the distribution.
13 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 .\" $Id: i4bq921.4,v 1.8 1999/12/13 22:11:55 hm Exp $
27 .\" $FreeBSD: src/usr.sbin/i4b/man/i4bq921.4,v 1.7.2.4 2003/03/13 03:10:59 trhodes Exp $
28 .\" $DragonFly: src/usr.sbin/i4b/man/i4bq921.4,v 1.3 2006/02/17 20:40:15 swildner Exp $
30 .\" last edit-date: [Mon Dec 13 23:11:55 1999]
37 .Nd isdn4bsd pseudo device driver handling the Q.921 protocol
39 .Cd pseudo-device \&"i4bq921\&"
44 is the ISDN D channel layer 2 handler.
48 ITU Recommendation Q.920 and Q.921
52 driver and this manpage were written by
53 .An Hellmuth Michaelis Aq hm@FreeBSD.org .