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Marten Christophe technosabby at gmail.comDear Francisco, I'm trying to make a cheap two way radio system using off the self Motorola phones and USRP while BTS is transmitting on an ARFCN and let say TS no. X with hopping sequence XYZ, now i want multiple c123 or c139 MS should be able to tune to the same ARFCN and the TS by this, only one teach would be broadcasting on 40 students, if any student have any query to teacher he will use corresponding TX channel to transmit his voice to his remote teacher , even in real class room scenario there used to be one student used to ask question to their teacher not all the class at the same time. benefit of this approach will be to use only single channel ( ARFCN+TS) for multiple students. not 40 channels for 40 MS so existing telcome will grant us that one dedicated channel for free but if i ask any telecom company to provide 40 dedicated channels they will refuse. I just want to tune c123 or c139 to my desired ARFCN, Time Slot, and Hopping sequence ( in signalling mode) , hence i can land all 40 ME to same traffic channel. and this is possible with sniff tool it is my understanding Hope this will clear my application. Kind Regards, Marten On Wed, Apr 27, 2011 at 5:30 AM, Francisco Guerreiro <francisg at fnop.net> wrote: > Dear Marten, > > I have read your emails when you wrote them. they still do NOT explain why > you need sniffing :-) > > if only you could explain in one setence what's your need for sniffing, that > would be better than going on about poor children and NGO's :-) > > Cheers, > Francisco > > On Tue, Apr 26, 2011 at 11:37 PM, Marten Christophe <technosabby at gmail.com> > wrote: >> >> Hello Francisco, >> >> Pls read my mail archive in Sep and oct months on OsmocomBB mailling list >> >> http://lists.osmocom.org/pipermail/baseband-devel/2010-October/date.html >> >> >> one of the mail from that archive pls read >> ======Q======= >> Hello Mr. Nordin, >> >> So nice of you, thanks it worked perfectly. >> >> >> End Mr. Dieter , >> Thank you alot >> >> No need to tell me about MOC and MTC ,i searched internet and got >> plenty of understanding, >> >> well, i let me introduce you all my work here , i'm assosiated with a >> NGO, who works for education of poor children specially >> located to very remote sites of the devloping or under develop poor >> countries. >> >> and students, have travel long distance for there schooling , you wont >> belive that some of the villages are on mountain, end even >> childrens have cross rivers tgrogh rope , hanging on a spin roller , >> can you imagin the situation. >> >> and >> most of the student give up their education. >> My future plans are : >> Hence a top Tecchnelogical and Engineering instititute and a Local top >> IT and computer manafaturing company >> along with my NGO, are developing a $10 note book computer, just for >> edcational purpose , and will be distributed them for free .(60% >> bearing the local govt.) these notebooks will be install with their 6 >> moth curricular( one semester or term) all course material will be >> pre-installed. >> the fedaral goverments will also be helping in this purpose. who will >> ask local telecommunication athourities , to provide us,at least one >> ARFCN , without licensing fee, >> >> but there is no intrastucture for internet and in some villages no >> PSTN or mobile network available >> >> >> My planning here is to setup a USRP1( i have to write Matt Ettus to >> provide it on concessional price , cause it is for charity) based BTS >> , at each visnity of a village, which might cover near by villages >> also. >> >> I know, Timing Advance and power control will challenge for me, but >> i'll overcome the same , as far as RX part is concerned , >> it wont be a huge problem because one village is less then 1 KM >> redious , if USRP BTS installed in center. >> >> will install compal based hardware, within, notebook, pre-tuned it to >> a fix Time slot (TS), most of the traffic will be from BTS to MS , we >> will left only one or 2 TX slot , and will be share amoung all the >> students in token ring fashion ( let say there is 15 students are in >> one visnity if any on student want to ask any question to their >> remote teachers (mostly volunteers, or Govt add) located in NGO'S head >> office) >> >> all USRP's backbone pipe/link will be interconnected through RF links >> ( a Israel based company have very cheap solution for small bandwidth >> RF connectivity ) finally this backbone pipe/link will terminate at >> nearest city or place where Internet facility is available. and all >> the traffic will be routed to NGO's head quarter. >> >> so for this we need only 64 KB max bandwidth. that we can afford. >> >> thats it , by this we are able to provide secondary education even >> children are at their home. >> at first we thout to install a IP DSLAM but the price and copper cost >> (to provide line to each student is so high and out of budget) >> >> in future i can enable GPRS functionality of compal and might able to >> provide Internet access too, to them but we have to put higher >> bandwidth Backbone , so its not in my list now. >> >> Wish me luck. >> >> >> =========UQ======= >> >> >> >> >> On Tue, Apr 26, 2011 at 10:18 PM, Francisco Guerreiro <francisg at fnop.net> >> wrote: >> > what do you mean by "education broadcasting" ? >> > >> > I don't see an "educational" aproach to GSM interception aside from >> > listening in on people's calls :-) >> > >> > also, if you are not going to use it illegally, why do you need it? i >> > don't >> > see any "legal" ways you could use it that you can't already use with >> > the >> > public code. >> > >> > I do see the profits for private investigators and other "security" >> > industry >> > folks ;) >> > >> > Cheers, >> > Francisco >> > >> > On Tue, Apr 26, 2011 at 9:16 PM, Marten Christophe >> > <technosabby at gmail.com> >> > wrote: >> >> >> >> Dear all on the List, >> >> >> >> I am really serious to get that sniff code developed, please tell me >> >> you fee for development, and reasonable fee >> >> that I must be able to pay I will give you guarantee that i will not >> >> use sniff code or any illegal purpose any where in the world nor >> >> disclose it >> >> to some one else if you want you can give it under strict license >> >> agreement. >> >> >> >> conditions: I will use it for my project for education broadcasting >> >> 2) I will not disclose or distribute to third party >> >> or entity or person. >> >> >> >> you can mention it to your license agreement. >> >> >> >> >> >> Kind Regards, >> >> Marten. >> >> >> >> >> >> >> >> >> >> On Tue, Apr 26, 2011 at 5:24 PM, Sylvain Munaut <246tnt at gmail.com> >> >> wrote: >> >> > Hi, >> >> > >> >> > >> >> >> I would like you to decide your remunerations /expanses/ development >> >> >> fees. >> >> > >> >> > Sure thing ... >> >> > >> >> > Take a standard chess board ( 8 x 8 ), place 1$ (USD) on the first >> >> > case, then 2$ on the second, then 4$ on the third, etc ... (double >> >> > for >> >> > each case). Do this for all the cases on the chess board and then >> >> > send >> >> > that to me and I'll give you a sniffer. >> >> > >> >> > Cheers, >> >> > >> >> > Sylvain >> >> > >> >> > --------------------------------------------------------------------- >> >> > To unsubscribe, e-mail: main-unsubscribe at lists.airprobe.org >> >> > For additional commands, e-mail: main-help at lists.airprobe.org >> >> > >> >> > >> >> >> > >> > > >