See section msn.
Have a look in section hardware.
See section dialout.
See section dialin.
If you have a SuSE distribution, and you can not find your card in yast,
then select card generic
and enter the exact parameters in the
special case line, like: type=27 protocol=2
for Fritz!PCI and
Euro ISDN. Get a newer kernel if the desired type is not yet supported.
For PCI cards Plug and Play works automatically, they don't need any manual configuration if the correct card type is provided. ISA PNP cards will require some manual configuration:
pnpdump -c > /etc/isapnp.conf
/etc/isapnp.conf
properly:
isapnp /etc/isapnp.conf
modprobe hisax io=4,2,INT,IO0,IO1
There are several options:
rcroute stop rci4l stop rci4l_hardware stop
rci4l_hardware start rci4l start rcroute start
kerneld does not work well with the ISDN modules, since the ISDN modules can not store their status, and could miss important messages on the D channel. Newer versions of i4l ensure that they won't be unloaded by kerneld, but you should not try to use kerneld with any version of i4l.
Yes, you can define two different run level for this (under SysVInit) in
/etc/inittab
. One run level includes the ISDN processes, where the
other one does not.
There are some specialities for configuration of more than 1 card:
modprobe -v hisax protocol=2,2 type=28,28
Increase the parameter ISDN_MAX_CHANNELS in
/usr/src/linux/include/linux/isdn.h
and rebuild the isdn stuff. Don't
forget to create the additional devices with makedev.sh (part of isdn4k-utils)
or by hand.
A connection via GSM will first go to the GSM provider via a special air transmission protocol. To forwarding the data on to an analog or ISDN line, an adapter called IWF (interworking function) has to translate this into the analog or ISDN specific transmission protocol. Which analog or ISDN transmission protocol is being used depends on how the mobile phone requests its GSM connection. An analog connection is not very attractive due to the lengthy modem handshaking on dialin. For ISDN, HDLC and X.75 are currently not supported by the IWF, so the choices are down to V.110 and V.120. V.120 has better flow control and error correction, but currently isdn4linux only supports V.110.
On the dialup server set up async PPP with a normal pppd on a ttyI* device
(sync ppp will not work). Additionally to setting the msn, you have to set
V.110 and the transmission rate to 9600 with AT&R9600
(/usr/src/linux/Documentation/isdn/README
gives more details on
the V.110 bitrate adaption for this command).
Switch off autoanswer with ATS0=0
if you use mgetty.
pppd needs to be called with noccp
and require-pap
.
On the GSM mobile phone side, request an ISDN V.110 connection with the command
AT+CBST=71,0,1+CHSN=1,0,0,0
AT+CBST=75,0,1
If the bearer capability is reported as "88 90 21 48 06 bb" by isdn4linux, then you have set it correctly (88 90 21 means V.110, 48 means ASYNC 9.6kbit, 06 means flowcontrol RX/TX, bb means 8 bit 1 stop none parity).
If the call is indicated with service indicator byte 2 = 0 and not accepted
(happens with some wrongly configured PBX), then adjust with ATS19=0
.
A higher bandwidth of 19.2kbit (HSCSD) could be requested with the command
AT+CBST=81,0,1+CHSN=3,0,0,0
For a mini-howto see: http://www.oltom.com/Linux/Docs/GSM%20over%20V.110%20Mini-HOWTO.txt
You have to install the Linux H.323 - ISDN Gateway, which can be found on http://www.telos.de/linux/H323/.
Please note that not all sound cards support full duplex audio. Depending on your hardware you may end up with uni-directional voice.
First of all, the point-to-point connection will only work for one single device connected to it - therefore nothing else but your ISDN card may be attached to it. You can switch HiSax into point-to-point mode:
hisaxctrl <driver_id> 7 1
If you really absolutely want to run your ISDN card for read-only purposes in parallel to your pbx on a point-to-point connection, then you have to disconnect the RX leads (pin 3 and 6 on western plug), so that the NTBA will not see the ISDN card. In this case configure HiSax normally, NOT in point-to-point mode.
These are helpful links that are currently available on how to configure isdn4linux:
http://www.rosat.mpe-garching.mpg.de/~web/ISDN.html
http://i4l.mediatronix.de/
http://ixi.thepenguin.de
or
http://capi4linux.thepenguin.de
or
http://www.thepenguin.de
http://innominate.org/projects/vbox/index.php3
http://www-ti.informatik.uni-tuebingen.de/~hippm/isdn.html
http://www.auf-der-er.de/chargeint.html
http://www.millenniumx.de/kisdn.html
http://www.oakhaven-consultants.co.uk
http://www.ganzfix.de