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September 2015

5 participants
12 discussions

Osmocom Berlin User Group revival?
by Harald Welte 09 Sep '15

09 Sep '15

Dear all, After two years of intermission, I'm currently pondering to revive the Osmocom Berlin User Group and would like to understand a) who would be interested in attending? b) which day(s) of the week would be preferred / not preferred? Instad of "just" hanging out, chatting about Osmocom related topics etc. I am interested in having actual topics for each of the meetings. There is no need for a formal presentation or anything like that, but at least let's try to stay focussed on the topic for the first hour or so, and then conclude with a more general chat towards the end. Some of the topics that I would like to start with ASAP: * sharing of knowledge regarding 3G and 4G protocol stacks (I'm looking a lot at this recently, and it is a good time to talk about what I've learned) * completing the work towards splitting osmo-nitb into osmo-bsc and osmo-mss - as a first stept towards adding RANAP/Iu to osmo-mss * attempting to decode/analyze BVG bus/tram radio (TETRAPOL) using tetrapol-kit from http://brmlab.cz/git/tetrapol-kit.git * are berlin S-Bahn trains actually still broadcasting their GPS position in MPT1327? * moving ahead with AT91SAM3S based SIMtrace2 with MITM support Let me know who is interested in joining. In terms of venue I would suggest to again use the CCCB, unless somebody objects. We could of course also ask our friends at IN-Berlin or C-Base. In terms of schedule, I would actually want to go for bi-weekly again. Happy hacking, 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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network-from-scratch(calypso-setup)-several phones and gprs
by Erich Dachleger 08 Sep '15

08 Sep '15

I was also wondering about if is is possible to use network-frm-scratch setup (calypso-transceiver) with more phones to get more TCH channels as well as gprs? Regards erich Hello, list! I am trying to make working two and more TCH channels in OpenBSC (NiTB mode) with calypso based phones. How to understand timeslots allocation in this strings of transceiver app? as->l1l[0].tx_mask = 0xe3; /* TS 5,6,7,0,1 */ as->l1l[0].rx_mask = 0x01; /* TS 0 */ Why 2, 3, 4 timeslots is not used? And how to connect more than two phones to the transceiver? Should I add a new TRX in OpenBSC config and/or modify source code of the transceiver app? With best regards, fixeria.

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