1.\" $NetBSD: dn.4,v 1.9 2002/02/13 08:18:06 ross Exp $ 2.\" 3.\" Copyright (c) 1980, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 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. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" from: @(#)dn.4 8.1 (Berkeley) 6/5/93 35.\" 36.Dd June 5, 1993 37.Dt DN 4 vax 38.Os 39.Sh NAME 40.Nm dn 41.Nd 42.Tn DN-11 43serial autocall unit interface 44.Sh SYNOPSIS 45.Cd "dn0 at uba? csr 0160020 vector dnintr" 46.Sh DESCRIPTION 47NOTE: This driver has not been ported from 48.Bx 4.4 49yet. 50.Pp 51The 52.Nm dn 53device provides an interface through a 54.Tn DEC 55.Tn DN-11 56(or equivalent 57such as the Able Quadracall) to an auto-call unit 58.Pq Tn ACU . 59To place an outgoing call one forks a sub-process which 60opens the appropriate call unit file, 61.Pa /dev/cua? 62and writes the phone number on it. The parent process 63then opens the corresponding modem line 64.Pa /dev/cul? . 65When the connection has been 66established, the open on the modem line 67.Pa /dev/cul? 68will return and the process will be connected. 69A timer is normally used to timeout the opening of 70the modem line. 71.Pp 72The codes for the phone numbers are: 73.Bl -column xxxx -offset indent 740-9 number to be dialed 75* dial * (`:' is a synonym) 76# dial # (`;' is a synonym) 77\- delay 20 milliseconds 78\*[Lt] end of phone number (`e' is a synonym) 79= delay for a second dial tone (`w' is a synonym) 80f force a hangup of any existing connection 81.El 82.Pp 83The phone number to be dialed must be presented as one contiguous string. 84.Pp 85By convention, even numbered call units are for 300 baud 86modem lines, while odd numbered units are for 1200 baud lines. 87For example, 88.Pa /dev/cua0 89is associated with a 300 baud modem line, 90.Pa /dev/cul0 , 91while 92.Pa /dev/cua1 93is associated with a 1200 baud modem line, 94.Pa /dev/cul1 . 95For devices such as the Quadracall which simulate multiple 96.Tn DN-11 97units, the minor device indicates which outgoing modem to use. 98.Sh FILES 99.Bl -tag -width /dev/cul? -compact 100.It Pa /dev/cua? 101call units 102.It Pa /dev/cul? 103associated modem lines 104.El 105.Sh DIAGNOSTICS 106Two error numbers are of interest at open time. 107.Bl -tag -width EBUSYxx 108.It Bq Er EBUSY 109The dialer is in use. 110.It Bq Er ENXIO 111The device doesn't exist, or there's no power to it. 112.El 113.Sh SEE ALSO 114.Xr tip 1 115.Sh HISTORY 116A 117.Nm 118driver appeared in 119.At v6 . 120