1 .\" $NetBSD: dn.4,v 1.10 2003/08/07 10:31:11 agc Exp $
3 .\" Copyright (c) 1980, 1991, 1993
4 .\" The Regents of the University of California. All rights reserved.
6 .\" Redistribution and use in source and binary forms, with or without
7 .\" modification, are permitted provided that the following conditions
9 .\" 1. Redistributions of source code must retain the above copyright
10 .\" notice, this list of conditions and the following disclaimer.
11 .\" 2. Redistributions in binary form must reproduce the above copyright
12 .\" notice, this list of conditions and the following disclaimer in the
13 .\" documentation and/or other materials provided with the distribution.
14 .\" 3. Neither the name of the University nor the names of its contributors
15 .\" may be used to endorse or promote products derived from this software
16 .\" without specific prior written permission.
18 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 .\" from: @(#)dn.4 8.1 (Berkeley) 6/5/93
39 serial autocall unit interface
41 .Cd "dn0 at uba? csr 0160020 vector dnintr"
43 NOTE: This driver has not been ported from
49 device provides an interface through a
53 such as the Able Quadracall) to an auto-call unit
55 To place an outgoing call one forks a sub-process which
56 opens the appropriate call unit file,
58 and writes the phone number on it. The parent process
59 then opens the corresponding modem line
61 When the connection has been
62 established, the open on the modem line
64 will return and the process will be connected.
65 A timer is normally used to timeout the opening of
68 The codes for the phone numbers are:
69 .Bl -column "0-9" description -offset indent
70 .It 0-9 number to be dialed
71 .It * dial * (`:' is a synonym)
72 .It # dial # (`;' is a synonym)
73 .It \- delay 20 milliseconds
74 .It \*[Lt] end of phone number (`e' is a synonym)
75 .It = delay for a second dial tone (`w' is a synonym)
76 .It f force a hangup of any existing connection
79 The phone number to be dialed must be presented as one contiguous string.
81 By convention, even numbered call units are for 300 baud
82 modem lines, while odd numbered units are for 1200 baud lines.
85 is associated with a 300 baud modem line,
89 is associated with a 1200 baud modem line,
91 For devices such as the Quadracall which simulate multiple
93 units, the minor device indicates which outgoing modem to use.
95 .Bl -tag -width /dev/cul? -compact
99 associated modem lines
102 Two error numbers are of interest at open time.
103 .Bl -tag -width EBUSYxx
105 The dialer is in use.
107 The device doesn't exist, or there's no power to it.