OsmoDevCon May 2024

osmodevcon@lists.osmocom.org

4 participants
3 discussions

Thanks for attending / Lost-and-found: USB-C power supply

by Harald Welte

Dear OsmoDevCon 2024 participants, thanks a lot for attending and contributing by your talks, discussions, comments and conversations. It was a pleasure meeting all of you [again] and I do hope to see all of you again at another conference soon. Lost + Found ============ During teardown, we found that somebody has left behind a Lenovo USB-C laptop power supply (date code in year 2018). It was on the desk roughly in the area where Philipp was sitting. However, Philipp checked and it was not his. If anyone is missing theirs, please let me know and we can see how to get it to you. Hotel room payment ================== I hope everything worked out as expected during checkout. If anyone was unexpectedly asked to pay for the room, please let me know. Only those working for non-sysmocom companies with an "osmocom related dayjob" should have been asked to pay the room directly to the hotel. Invoicing ========= For those of you in an "osmocom related dayjob" who are expected to cover the daily conference rates of the hotel: sysmocom will wait until receiving the final hotel invoice and then issue invoices to your respective employer. Video Recordings ================ The recordings still need to be cut before they are published on media.ccc.de. This will likely take a few weeks I'm planning to release an osmocom.org news item (RSS feed) and post here when they are available. Thanks ====== I'd like to again thank our Sponsors AMN (Gold Sponsor), WaveMobile (Silver Sponsor) and sysmocom (Silver Sponsor) for generous financial support making the event in its 2024 format/venue possible. I'd also like to thank the c3voc team (specifically derpeter and Jake) for recording / editing / publishing the talks. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> https://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

1 week, 5 days

Can someone do some experiments for me on the E1 BTS at ODC?

by Mychaela Falconia

Hello OsmoDevCon participants, As much as I would love to join you this weekend, I am currently unable to travel outside of USA+Canada+Mexico territory - that's what happens when you lose citizenship in your birth country without acquiring new citizenship in the country of residence... However, I hear that there will be an Ericsson BTS set up in the meeting room at ODC, and I wonder if someone among the attendees could perform a few experiments for me which I would have performed myself if I could attend. I am seeking a full capture of the uplink output from the BTS on a TRAU sub-timeslot (or capture the whole TS to make it easier) for a call, in all 3 classic codecs: FR, HR, EFR. With all 3 codecs, I am looking for BTS UL output with 'dtx uplink' enabled in OsmoBSC config, and with these two tricks performed during the test call: a) alternate between speaking into the mic and silence, so the MS will go into some DTXu pauses; b) press some DTMF keys during speech (not during silence) to exercise the scenario of active speech frames being stolen for FACCH. My main interest is to see what the BTS puts into traffic payload bits (alongside with BFI=1) when absolutely nothing was received on UL (no burst midables picked up) or when the received UL was FACCH - but of course I might spot something else that looks interesting if and when I get to look at some TRAU-UL captures with my own eyes. I have never owned or laid my hands on any kind of T1/E1 BTS, hence I have read the specs, read Osmocom code, but have no actual experience seeing what real historical BTS implementations actually do. Hence I am looking for some real UL output captures from _some_ E1 BTS. Note how I said "some" E1 BTS: at this point I would be happy to see a capture from any E1 BTS, no matter which vendor. I am asking about Ericsson right now simply because I keep hearing that there will be an Ericsson BTS in the ODC meeting room, but if someone has a Nokia BTS available/accessible for play, I would be just as happy with a UL capture from that one. In fact, a Nokia BTS UL capture might be even more interesting: I am in the process of acquiring a Nokia TCSM2 system (Nokia's term for the bank of TRAUs, 2nd generation), and if I had captured UL output from Nokia Abis, I could feed it directly to the Ater input of the TRAU. But back to Ericsson BTS at ODC, given how well GSM 08.60 format is standardized, if I had a UL capture from Ericsson, it would probably work just as fine as input to Nokia TRAU - and of course I can always tweak the bits in my TRAU experiments. If someone at OsmoDevCon could do these E1 BTS experiments for me, I would be very grateful. TIA, Mychaela

1 week, 5 days

OsmoDevCon 2024 build-up on Thursday evening

by Harald Welte

Hi all! This is JFYI for those of you who will be present already on Thursday: I'm planning to do some build-up (power cabling, Ethenret switch, etc.) in the meeting room / venue Thursdays from about 5pm onwards. Feel free to stop by and say hi. In case there are no signs up yet: Ask the reception for the meeting room of OsmoDevCon. I don't know the room name yet, but for sure it's in the conference centre, which is an adjunct building that can be reached from the interior courtyard of the hotel main building. I intend to bring all equipment on my long list that day, so stuff like the DUG20+RUS etc. should all be on-site from that time onwards. One of the reasons to do this Thursdays is to figure out what might be missing so I can bring it on Friday morning. Any extra set of eyes figuring out what we might still be needing the next day is good too have. Looking forward to see all of you at the event, Harald -- - Harald Welte <laforge(a)gnumonks.org> https://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

2 weeks, 3 days

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OsmoDevCon May 2024