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.