1.\" $OpenBSD: umodem.4,v 1.3 2001/08/03 15:21:16 mpech Exp $ 2.\" $NetBSD: umodem.4,v 1.4 2000/01/25 08:32:05 augustss Exp $ 3.\" 4.\" Copyright (c) 1999 The NetBSD Foundation, Inc. 5.\" All rights reserved. 6.\" 7.\" This code is derived from software contributed to The NetBSD Foundation 8.\" by Lennart Augustsson. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 3. All advertising materials mentioning features or use of this software 19.\" must display the following acknowledgement: 20.\" This product includes software developed by the NetBSD 21.\" Foundation, Inc. and its contributors. 22.\" 4. Neither the name of The NetBSD Foundation nor the names of its 23.\" contributors may be used to endorse or promote products derived 24.\" from this software without specific prior written permission. 25.\" 26.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36.\" POSSIBILITY OF SUCH DAMAGE. 37.\" 38.Dd August 16, 1999 39.Dt UMODEM 4 40.Os 41.Sh NAME 42.Nm umodem 43.Nd USB modem support 44.Sh SYNOPSIS 45.Cd "umodem* at uhub?" 46.Cd "ucom* at umodem?" 47.Sh DESCRIPTION 48The 49.Nm 50driver provides support for USB modems in the Communication 51Device Class using the Abstract Control Model. 52These modems are basically standard serial line modems, but they are 53accessed via USB instead. 54They support a regular AT command set. 55The commands can either be multiplexed with the data stream 56or handled through separate pipes. 57In the latter case the AT commands have to be given on device separate 58from the data device. 59.Pp 60The device is accessed through the 61.Xr ucom 4 62driver which makes it behave like a 63.Xr tty 4 . 64.Sh SEE ALSO 65.Xr tty 4 , 66.Xr ucom 4 , 67.Xr usb 4 68.Sh HISTORY 69The 70.Nm 71driver appeared in 72.Nx 1.5 . 73.Ox 74support was added in 75.Ox 2.7 . 76.Sh BUGS 77Only modems with multiplexed commands and data are supported 78at the moment. 79