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gsm0710muxd - a GSM 07.10 muxer

GSM0710MUXD(8) System Manager's Manual GSM0710MUXD(8)

NAME

gsm0710muxd - a GSM 07.10 muxer

SYNOPSIS

gsm0710muxd [options]
 

DESCRIPTION

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.
 

COMMAND-LINE OPTIONS

-d
Fork, get a daemon (default: no)
 
-v
Verboser logging (give twice for even more verbose)
 
-s <serial port name>
Serial port device to connect to (default: /dev/modem)
 
-t <timeout>
reset modem after this number of seconds of silence (default: 0)
 
-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.
 
-p <number>
use ping and reset modem after this number of unanswered pings (default: 0)
 
-l <filename>
set logfile name (default: <not set>)
 
-x <dir>
power management base dir (default: <not set>)
 
-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.
 
-b <baudrate>
muxer-mode baudrate (default: 115200)
 
-B <baudrate>
serial port baudrate (default: 115200)
 
-m <mode>
Mode (basic, advanced) (default: advanced)
 
-f <framsize>
Frame size (default: 64)
 
-h
Show a help message and display current settings.
 
 

HISTORY

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

BUGS/LIMITATIONS

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.
 

AUTHOR

M. Dietrich <mdt@pyneo.org>
 

SEE ALSO

ptsname(3)
 
23 June 2009 gsm0710muxd