freebsd-nq/share/man/man4/umodem.4

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.\" $NetBSD: umodem.4,v 1.6 2001/09/11 23:18:55 wiz Exp $
.\"
.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Lennart Augustsson.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" must display the following acknowledgment:
.\" This product includes software developed by the NetBSD
.\" Foundation, Inc. and its contributors.
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
.\" contributors may be used to endorse or promote products derived
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.\" $FreeBSD$
.\"
.Dd August 16, 1999
.Dt UMODEM 4
.Os
.Sh NAME
.Nm umodem
.Nd USB modem support
.Sh SYNOPSIS
.Cd "umodem* at uhub?"
.Cd "ucom* at umodem?"
.Sh DESCRIPTION
The
.Nm
driver provides support for USB modems in the Communication
Device Class using the Abstract Control Model.
These modems are basically standard serial line modems, but they are
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accessed via USB instead.
They support a regular AT command set.
The commands can either be multiplexed with the data stream
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or handled through separate pipes.
In the latter case the AT
commands have to be given on device separate from the data device.
.Pp
The device is accessed through the
.Xr ucom 4
driver which makes it behave like a
.Xr tty 4 .
.Sh SEE ALSO
.Xr tty 4 ,
.Xr ucom 4 ,
.Xr usb 4
.Sh HISTORY
The
.Nm
driver
appeared in
.Nx 1.5 .
This manual page was adopted from
.Nx
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by
.An Tom Rhodes Aq trhodes@FreeBSD.org
in April 2002.
.Sh BUGS
Only modems with multiplexed commands and data are supported
at the moment.