baseband-devel

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2022 discussions

How can I see the RAND/SRES
by dagar 24 Dec '12

24 Dec '12

Hello, I am in the process of setting up OsmocomBB but I was wondering where/which files in the firmware responsible for receiving/processing the RAND/SRES values from the network/SIM. Does anyone know this or can point me in the right direction? -- View this message in context: http://baseband-devel.722152.n3.nabble.com/How-can-I-see-the-RAND-SRES-tp40… Sent from the baseband-devel mailing list archive at Nabble.com.

2 1

problems after last update
by Vic Delorge 24 Dec '12

24 Dec '12

hello first off al these phone's and tools RULE . i already tested a couple branches . burst_ind work'd and captured packet's , sylvain/testing also worked a week or 2 ago and i could make a call en see it in wireshark :) . but now i saw that there were some updates in the sylvain testing branch i updated like the sim reader page on the wiki told me . could it be that the last commits broke the sylvain/testing branch ? i get error while loading libosmocore.so.4 i followed the tutorial on the wiki for sim reader . 2 weeks ago it worked fine . checked the code in the last updates and it seems that lib osmocore is now changed ? or am i doing wrong ?? thx in advance grts vic

2 1

usim programming
by ☎ 22 Dec '12

22 Dec '12

Hello. I'm struggling with a5/3 test - I've got osmocom usim (http://shop.sysmocom.de/products/sysmousim-gr1) which I've programmed with pySim-prog.py Unfortunately when I plug it into samsung galaxy s2 it indicates (via classmark) that it only supports a5/1 What am I doing wrong? I've tried operator's sim with the same phone - a5/3 support is indicated just fine. -- best regards, Max, http://fairwaves.ru

2 1

Can't compile after last pull
by Dario Lombardo 21 Dec '12

21 Dec '12

I've pulled git repo today, but the RSSI firmware gets an error. apps/rssi/main.c: In function `main': apps/rssi/main.c:896: warning: 'a' might be used uninitialized in this function apps/rssi/main.c:896: warning: 'e' might be used uninitialized in this function CC board/compal_e88/rssi.compalram.manifest.o LD board/compal_e88/rssi.compalram.elf OBJ board/compal_e88/rssi.compalram.bin CC board/compal_e88/rssi.highram.manifest.o LD board/compal_e88/rssi.highram.elf OBJ board/compal_e88/rssi.highram.bin CC board/compal_e88/rssi.e88loader.manifest.o LD board/compal_e88/rssi.e88loader.elf OBJ board/compal_e88/rssi.e88loader.bin CC board/compal_e88/rssi.e88flash.manifest.o LD board/compal_e88/rssi.e88flash.elf OBJ board/compal_e88/rssi.e88flash.bin CC board/compal_e86/rssi.compalram.manifest.o LD board/compal_e86/rssi.compalram.elf arm-elf-ld: region LRAM is full (board/compal_e86/rssi.compalram.elf section .data) make[1]: *** [board/compal_e86/rssi.compalram.elf] Error 1 make[1]: Leaving directory src/target/firmware' make: *** [firmware] Error 2 $ git pull Already up-to-date. $ Anyone experiencing the same issue?

9 11

graphical gsmtap helper
by ☎ 20 Dec '12

20 Dec '12

Hello. It's often handy to have a high-level look at message exchange between ms and gsm network captured via gsmtap. There are some tools to do that for ip captures but they completely ignore uplink-downlink semantics so are next to useless in this case. Attached is little helper which can be used to make proper descriptions for mscgen to produce nice message sequence charts. Usage instructions are inside the script. In short: .pcap in - .png out It requires mscgen and recent (>=1.9) tshark so you have to use git to get and build tshark binary yourself until wireshark 1.10 is released: git clone http://code.wireshark.org/git/wireshark Apologies if you received this message multiple times but I personally find this little helper to be very useful so I'd like to reach as wide audience as possible. -- best regards, Max, http://fairwaves.ru

1 0

restart layer1 from remote?
by Tim Ehlers 19 Dec '12

19 Dec '12

Hi, I have the problem, that after running for quite a while, lets say a week, the layer1 seems to crash. This crash is random and only happens on single phones (I have 6 phones connected to one mobile app). This phone is unusable, even after "shutdown/no shutdown" or complete restart of mobile, this phone stays like this: OsmocomBB# show ms 3 MS '3' is up, service is limited IMEI: XXXXXXXXXXXX IMEISV: XXXXXXXXXXXXX IMEI generation: fixed automatic network selection state: A1 trying RPLMN MCC=262 MNC=07 (Germany, O2) cell selection state: C1 normal cell selection radio ressource layer state: idle mobility management layer state: MM idle, PLMN search By restarting the phone (pressing power on the phone, and reloading layer1) its working again. But this need physical access to the phone. Is there a way to somehow "reboot" or restart the layer1 by software? And if not, could that easily be implemented? Thanks Tim

2 3

System information type 5 & 6
by g.roelant＠telenet.be 16 Dec '12

16 Dec '12

Hi, i'm capturing my own voice calls in wireshark. i can see a system information type packet just before ciphering command. 204 frames further there is a system information type 6 packet. but these 2 packets don't resamble... how can i subtract a key out of these 2 different packets? this doesn't make any sens.... if i look for the same type 5 packet... they are never at the same location.... :( is my reasoning wrong? kind regards

1 0

question about l1ctl_burst_ind structure
by g.roelant＠telenet.be 16 Dec '12

16 Dec '12

Hi, In the L1ctl_burst_ind structure is: uint8_t bits[15]; /* 114 bits + 2 steal bits. Filled MSB first */ if i do 8 * 15 = 120 that would make 6 bits extra... not 2 bits should i discard the last 6 bits of the last byte? thanks

2 1

burst_ind branch
by g.roelant＠telenet.be 16 Dec '12

16 Dec '12

Please correct me if i'm wrong: i'm writing a small c program to process to burst files. run ccch_scan and follow the frames in wireshark. if you see an "inrtresting" frame, note his number get the correct frame out of the burst file and display its bit stream. than this bitstream can be further used for processing add a certain offset to the framecounter and get that frame out of the burst file and display its bit stream. the rest.... i still have to figure that out... can anyone confirm i am doing the write thing? thanks

1 0

Questions about filter replacement and fbsb_req
by Pe 15 Dec '12

15 Dec '12

Hi list! I'm playing with ccch_scan from burst_ind branch. I have some troubles with going SDCCH - FCCH\SCH - TCH After receiving "assignment command" i call fbsb_req to L1 for waiting FCCH\SCH sync bursts. When fbsb_resp is coming, i call dm_est_req_h1 with channel and hopping params. But SNR of incoming tch bursts is less then 10 most of time. What did i wrong? Is it needs to synchronize only timers by SCH without FCCH freq sync? And why we lose sync when goes from SDCCH to TCH? And a question about filter replacement. After filter change on baluns i see -128 dBm on all ARFCNs when mobile app from master branch is started. After that i tried to connect balanced line to the former filter pad and unbalanced line to the ground via cap(on the EGSM channel), as Sylvain wrote. But it didnt help. Photo after filter rework on C115: http://s9.postimage.org/r50qtx73z/lastrep.jpg As i understand, the input tract with 2 caps, 2 inductors and band-pass filter just needs for image frequency disabling? -- View this message in context: http://baseband-devel.722152.n3.nabble.com/Questions-about-filter-replaceme… Sent from the baseband-devel mailing list archive at Nabble.com.

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