gsm0710muxd - a GSM 07.10 muxer
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.
- -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.
The name 'gsm0710muxd' was chosen because the GSM specs describe
this method in document 7.10.
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.
M. Dietrich <mdt@pyneo.org>