Re: [Bluez-devel] Multiplexing for SimAccessProfile

[Mayank BATRA <mayank.batra@st.com>]

Hi Goetz,

Can you release the source code? I'll try at my end. I have a phone
supporting SAP.

Regards,
Mayank


> 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
> 
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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
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http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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