[Bluez-devel] Multiplexing for SimAccessProfile

["Götz Issel" <g.issel@fh-wolfenbuettel.de>]

Hi all,

I am still working on the Sim Access Profile implementation and am now
stuck on the communnication with the GSM module I use, the serial port
multiplexing. 

The connection to the bluetooth device and all the messages and
responses to and from the mobile phone work fine. So the bluetooth part
is done. Now the GSM module will need to have the data from the SIM of
the mobile phone to use it for connectiong to the GSM network. Since I
use a device from Siemens (AC45) it already has the multiplexing (GSM
07.10) integrated meaning that I can send an AT-command (at+cmux=0) and
it will switch to multiplexing mode and work as required. It will know
how to handle data packets coming in from the serial port to divide them
into each channel and how to pack the data with the apppropriate header
from each multiplexing channel to be sent back over the single serial port. 

The missing part is in my software. It will need to wrap and unwrap the
messages to and from the GSM modem in the form it is defined in the
specification for this multiplexing. 

There is solution of a final year project of a student in Finnland
available, but it seems to possible have a few bugs.
(http://users.tkk.fi/~tkarvone/). Compiling is fine and the load of user
space serial port module at runtime is ok too. To my understanding a
controlling application is the second part of this project, which will
open the port and enable the multiplexing of the GSM device and then
wait for data coming into or out of the "virtual" ports, wrapping or
unwrapping the data packets. Or am I wrong and have to replace the
application with my blueZ-SAP-application?

Has anyone used this multiplexing implementation successfully or does
anyone know of a different implementation of the multiplexing as
opensource to use with linux?

Greetings,
Goetz

-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
Bluez-devel mailing list
Bluez-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-devel