OpenBSC November 2010

openbsc@lists.osmocom.org

20 participants
37 discussions

libosmocore compile error
by Stuart Baggs 15 Nov '10

15 Nov '10

Hi, I am trying to get a working GPRS branch up and running. I have done a fresh git clone of both libosmocore and openbsc master branches. Both compile without issue. When I try and run bsc_hack from /opt/openbsc/ I get this error: ./bsc_hack: error while loading shared libraries: libosmovty.so.0: cannot open shared object file: No such file or directory Any ideas what has gone wrong with this install? Obviously openbsc cannot find libosmocore libraries, but I have compiled them cas per usual. Any ideas? Thanks

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A5/4 spec
by Harald Welte 10 Nov '10

10 Nov '10

Hi all, recently I've been mentioning A5/4 in a couple of meetings. I've found the (already approved) change requests that introduce A5/4 by coincidence today: http://www.3gpp.org/ftp/tsg_sa/TSG_SA/TSGS_45/docs/SP-090635.zip http://www.3gpp.org/ftp/tsg_sa/TSG_SA/TSGS_46/docs/SP-090821.zip So basically A5/4 (and GEA4) use a 128bit Kc, and this mandates the use of an USIM in USIM application mode. Old GSM SIM cards are not sufficient. So A5/4 will be the first algorithm that uses a different Kc and will thus not suffer from semi-active downgrading attacks (like you can do with old phones and A5/2 to break A5/1 or A5/3, or you can do today with A5/3 if you later use the same RAND on an A5/1 encrypted session). Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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Where do I get the compatible BTS
by Milind Bhirud 07 Nov '10

07 Nov '10

Hello, I'm exicted to see the OpenBSC contribution and wanted to try out and test the OpenBSC. I tried hard to get the nano-bts so that I can deploy OpenBSC but could not find any place / dealer / online auction to get one (new / used). I will appreciate if someone can help me pointing to the right people / firms from where I can buy the nano BTS. Thanks, Milind

1 0

Help with sccp library
by mosbah abdelkader 06 Nov '10

06 Nov '10

Dear openbsc developers, I have some questions regarding the sccp library code: 1- Where is implemented the write_data fct callback for sending sccp message. have I to reimplement it with mtp3 layer to send sccp data or it is implemented. 2- What are missing features of the library. Please help. Thank you.

2 1

Re: OpenBSC Digest, Vol 23, Issue 2
by Thomas Ansorg 05 Nov '10

05 Nov '10

Am Donnerstag, den 04.11.2010, 12:00 +0100 schrieb openbsc-request(a)lists.gnumonks.org: > Have you considered looking at the wiki? Where would you have looked > for such kind of information? sure i did. that's why i write here. and i still need a system("pause")-command Th. -- Wer Rechtschreibfehler findet, darf sie behalten!

2 1

location updating reject problem
by Thomas Ansorg 04 Nov '10

04 Nov '10

hello all, i have a major problem with logging into the bs-11: with one of my handys, i get the screen message "gsm04_08.c: 873: location updating reject on channel 0". how do i handle this? second problem: i need the wait-for-keypress-command, that what is system("pause") in c++ Th. -- Wer Rechtschreibfehler findet, darf sie behalten!

2 1

ip.access voice traffic
by Maggie Balsamic 03 Nov '10

03 Nov '10

Hello, Another beginner question. I have an ip.access that I'm using with openbsc. It's working, and I can make calls between phones, etc. When I capture a pcap I can view all the signaling between the ip.access and openbsc. But, I never see any voice packets. I suppose this could be because both phones are connected to the same bts. But, looking at some of the pcaps on the wiki, I do see that others have captured the voice packets. Is there a configuration option to force the voice data over the a-bis link? Thanks!

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OpenBSC November 2010