Hi list,
It's my first time posting here, and I've just subscribed - so apologies for totally wrecking archive threading.
I've just received a copy of the e-mail regarding the OT-290, thanks to Andrew Back; and I'm wondering it's possible to discuss the feasibility of implementing this functionality with Harald - since it doesn't seem to have generated much interest from others, and I'm "fortunate" enough to live in a small British town without EDGE coverage (which should make it easier to test GPRS-related tracing functionality).
Although I'm unfamiliar with how things work in Osmocom, I've previously worked on Wireshark dissectors for USB-encapsulated AT commands, and various NFC/smartcard-related protocols (PN532, FeliCa and MiFare); and am also familiar with Nokia's proprietary ISI baseband protocol, and parts of ETSI's GSM/UMTS specifications - so this sort of stuff isn't totally alien to me.
I'm also currently studying Computer Science as an undergraduate (at the University of Bradford) - but I should be able to make time to work on this.
Thanks,
Tyson.
Hi Tyson,
thanks for your introduction and for your interest in this project.
On Mon, May 07, 2012 at 01:20:31PM +0100, Tyson Key wrote:
I've just received a copy of the e-mail regarding the OT-290, thanks to Andrew Back; and I'm wondering it's possible to discuss the feasibility of implementing this functionality with Harald - since it doesn't seem to have generated much interest from others,
and I'm "fortunate" enough to live in a small British town without EDGE coverage (which should make it easier to test GPRS-related tracing functionality).
Even in areas with EDGE coverage, the network will always fall back to GPRS if you use a GPRS-only phone (like the OT-290). So the fact that your town only has GPRS doesn't make a difference here.
Although I'm unfamiliar with how things work in Osmocom, I've previously worked on Wireshark dissectors for USB-encapsulated AT commands, and various NFC/smartcard-related protocols (PN532, FeliCa and MiFare); and am also familiar with Nokia's proprietary ISI baseband protocol, and parts of ETSI's GSM/UMTS specifications - so this sort of stuff isn't totally alien to me.
Cool, this sounds like a good set of skills to address this problem.
I'm also currently studying Computer Science as an undergraduate (at the University of Bradford) - but I should be able to make time to work on this.
I guess time is the key aspect here. I would definitely want to make sure that whoever gets a OT-290 for implementing the GSMTAP interfacing code is likely to be able to complete the task before GPRS is phased out ;)
So I guess I will leave it up to Denis and you to figure out who might have more of an interest and/or time in this.
Regards, Harald
On Monday, May 07, 2012 01:20:31 PM Tyson Key wrote:
Hi list,
Hi, and sorry for the delay of responding.
Although I'm unfamiliar with how things work in Osmocom,
That doesn't seem a problem at all. The goal is only to interface the trace phone with wireshark trough gsmtap.
I've previously worked on Wireshark dissectors for USB-encapsulated AT commands, and various NFC/smartcard-related protocols (PN532, FeliCa and MiFare);
I never worked on wireshark but that seem a usefull skill.
and am also familiar with Nokia's proprietary ISI baseband protocol,
good, I know a bit ISI too but not too much in detail(I was involved in the port of SHR and freesmartphone to the nokia n900). That skill can help a lot too.
and parts of ETSI's GSM/UMTS specifications - so this sort of stuff isn't totally alien to me.
good.
I don't know which one of us has the higher chances to succeed, but since you are willing to do it, and that you seem to have the required skills, and that I can work on other things as well(for instance finish the port nuttx to the calypso phones), I would say that you can take the phone assuming you really work on it and I hope you'll succeed. I wish you good luck.
Also Harald Welte said:
The majority of what those phones can do is now also possible with OsmocomBB.
And I've already two osmocomBB compatibles phone(the freerunner and the c155). Altough I did not yet analyze the GSM protocol yet apart looking briefly at my own gsm packets without understanding the details, I'm still learning how the GSM protocol(Um and Abis) work(I only know the big picture so far) with the online slides of Joachim Göller.
I'll also try to find out about all the other features of osmocombb, to look if they are really usefull for development in the GSM protocol,and how to use them legally in Europe.
So far I was concentrated on nuttx and only tried some of the osmocombb features recently(like the gsmtap/wireshark integration on the master branch).
Denis.
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Denis 'GNUtoo' Carikli -
Harald Welte -
Tyson Key