1.\" $NetBSD: umodem.4,v 1.6 2001/09/11 23:18:55 wiz Exp $ 2.\" 3.\" Copyright (c) 1999 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Lennart Augustsson. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd August 16, 1999 38.Dt UMODEM 4 39.Os 40.Sh NAME 41.Nm umodem 42.Nd USB modem support 43.Sh SYNOPSIS 44.Cd "umodem* at uhub?" 45.Cd "ucom* at umodem?" 46.Sh DESCRIPTION 47The 48.Nm 49driver provides support for USB modems in the Communication 50Device Class using the Abstract Control Model. 51These modems are basically standard serial line modems, but they are 52accessed via USB instead. They support a regular AT command set. 53The commands can either be multiplexed with the data stream 54or handled through separate pipes. In the latter case the AT 55commands have to be given on device separate from the data device. 56.Pp 57The device is accessed through the 58.Xr ucom 4 59driver which makes it behave like a 60.Xr tty 4 . 61.Sh SEE ALSO 62.Xr tty 4 , 63.Xr ucom 4 , 64.Xr usb 4 65.Sh HISTORY 66The 67.Nm 68driver 69appeared in 70.Nx 1.5 . 71.Sh BUGS 72Only modems with multiplexed commands and data are supported 73at the moment. 74