.\" -*- nroff -*-
.TH GSM0710MUXD 8 "23 June 2009" "gsm0710muxd"
.SH NAME
gsm0710muxd \- a GSM 07.10 muxer
.SH SYNOPSIS
.B gsm0710muxd [options]

.SH DESCRIPTION
.B 
A GSM muxer is needed to keep a PPP/GPRS up & running while sms and
calls are still signaled on another channel. Some modems even support
using GPRS while a call is active, others suspend GPRS during calls.

The muxer supports various options to change the behaviour for
different modems. Use \-h to see a brief help screen.

All logging is done through syslog, see the syslog for errors and
warnings.

.SH "COMMAND\-LINE OPTIONS"

.TP 0.5i
.B -d
Fork, get a daemon (default: no)

.TP 0.5i
.B -v
Verboser logging (give twice for even more verbose)

.TP 0.5i
.B -s <serial port name>
Serial port device to connect to (default: /dev/modem)

.TP 0.5i
.B -t <timeout>
reset modem after this number of seconds of silence (default: 0)

.TP 0.5i
.B -P <pin-code>
PIN code to unlock SIM (default: <not set>). This is normally not
needed but some modems need the pin before enabling the muxer mode.

.TP 0.5i
.B -p <number>
use ping and reset modem after this number of unanswered pings (default: 0)

.TP 0.5i
.B -l <filename>
set logfile name (default: <not set>)

.TP 0.5i
.B -x <dir>
power management base dir (default: <not set>)

.TP 0.5i
.B -a <mode>
additional_functionality (default: 0). This is a bit-set enabling
quirks for different modem. The quirks are: WAKEUP_WITH_SYSFS = 1,
WAKEUP_WITH_SEQUENCE = 2, SIEMENS_C35 = 4, ENFORA = 8, SHORT_INIT =
16.

.TP 0.5i
.B -b <baudrate>
muxer-mode baudrate (default: 115200)

.TP 0.5i
.B -B <baudrate>
serial port baudrate (default: 115200)

.TP 0.5i
.B -m <mode>
Mode (basic, advanced) (default: advanced)

.TP 0.5i
.B -f <framsize>
Frame size (default: 64)

.TP 0.5i
.B -h
Show a help message and display current settings.


.SH HISTORY

The name 'gsm0710muxd' was chosen because the GSM specs describe this
method in document 7.10.

.SH BUGS/LIMITATIONS

.B gsm0710muxd
There may accure bufferoverruns and thus missing data between muxer
and client under certain situations.

Some settings could be determined by a AT-command at startup. This wouldn't be
much reliable because modems often lie so i did not invest to much work in
this.

.SH AUTHOR
M. Dietrich <mdt@pyneo.org>

.SH SEE ALSO
ptsname(3)