1.\" $NetBSD: umodem.4,v 1.8 2008/04/30 13:10:54 martin 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.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd August 16, 1999 31.Dt UMODEM 4 32.Os 33.Sh NAME 34.Nm umodem 35.Nd USB modem support 36.Sh SYNOPSIS 37.Cd "umodem* at uhub?" 38.Cd "ucom* at umodem?" 39.Sh DESCRIPTION 40The 41.Nm 42driver provides support for USB modems in the Communication 43Device Class using the Abstract Control Model. 44These modems are basically standard serial line modems, but they are 45accessed via USB instead. They support a regular AT command set. 46The commands can either be multiplexed with the data stream 47or handled through separate pipes. In the latter case the AT 48commands have to be given on a device separate from the data device. 49.Pp 50The device is accessed through the 51.Xr ucom 4 52driver which makes it behave like a 53.Xr tty 4 . 54.Sh SEE ALSO 55.Xr tty 4 , 56.Xr ucom 4 , 57.Xr usb 4 58.Sh HISTORY 59The 60.Nm 61driver 62appeared in 63.Nx 1.5 . 64.Sh BUGS 65Only modems with multiplexed commands and data are supported 66at the moment. 67