OpenBSC

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4315 discussions

openBSC paging issue
by robert 28 Jun '16

28 Jun '16

Hi, when trying to work with multiple BTS as noted in http://umtrx.org/multi-bts-with-osmocom-and-a-single-umtrx/ , I faced a problem related to paging. When I start the BTS, I can send SMS to any connected phone but after a few minutes no SMS is sent and I can’t even make calls. I noticed that the target phone is not being paged anymore. If I restart the openBSC instance the old pending messages get sent sometimes. Also if I run the same code but with only one OSMO-BTS instance, everything works fine. I would really appreciate some help. Best regards,

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iphone backdoor?
by Max 22 Jun '16

22 Jun '16

Hi. While testing I've got iphone (non-jailbroken) which regularly attempts to send following sms to number 447537410247 (uk?): REG-REQ?v=3;t=C335D183C5A2FC0E2501543EBCEB8263D55683FB63A2E8CAF98B8874D940263F;r=165209558 without asking user for anything. Is this some sort of Apple's backdoor? Or GCHQ is so bored that they are trying to spy on me? :) Have you guys seen this before? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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multitrx with osmotrx
by Max 21 Jun '16

21 Jun '16

Hi. I've noticed check for device type around Transceiver52M/UHDDevice.cpp:772 - seems like USRP B200 is not supported for multitrx configurations: sudo chrt 20 ./Transceiver52M/osmo-trx -c 2 sudo chrt 15 ./src/osmo-bts-trx/osmo-bts-trx -c ~/.config/osmocom/osmo-bts-trx.cfg -i 192.168.122.1 -t 2 Where does this limitation comes from? Is it just smth which is not implemented (yet) or it's impossible to implement due to X and Y? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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Re: osmo-bts-trx: "CHAN RQD: no resources for SDCCH" on master
by Alexander Chemeris 21 Jun '16

21 Jun '16

On Jun 15, 2016 10:38 PM, "Tom Tsou" <tom(a)tsou.cc> wrote: > > On Wed, Jun 15, 2016 at 10:08 AM, Max <msuraev(a)sysmocom.de> wrote: > > I've tried it with manually sending POWERON - the issue with CHAN RQD is > > gone but the phone still does not work. I'll look into OML/RSL/whatever > > is preventing it from working. > > Make sure that the static variable 'settsc_enabled' is set. > > diff --git a/src/osmo-bts-trx/trx_if.c b/src/osmo-bts-trx/trx_if.c > index a4c16dc..8c9a839 100644 > --- a/src/osmo-bts-trx/trx_if.c > +++ b/src/osmo-bts-trx/trx_if.c > @@ -47,7 +47,7 @@ > //#define TOA_RSSI_DEBUG > > int transceiver_available = 0; > -int settsc_enabled = 0; > +int settsc_enabled = 1; > int setbsic_enabled = 0; Could you explain why is that required? I don't remember the code exactly, but IIRC this is equivalent to setting or removing 'tsc' line in the config file. Please excuse typos. Written with a touchscreen keyboard. -- Regards, Alexander Chemeris CEO Fairwaves, Inc. https://fairwaves.co

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osmo-bts-trx: "CHAN RQD: no resources for SDCCH" on master
by Tom Tsou 21 Jun '16

21 Jun '16

Hi Harald, On Wed, Apr 6, 2016 at 12:59 AM, Harald Welte <laforge(a)gnumonks.org> wrote: > Can you or somebody else interested in getting this resolved provide a > full bug report, including > * debug log output on OsmoNITB side for for the rsl and nm > * debug log output on OsmoBTS side for oml / transceiver interface or > anything else related > * pcap file of A-bis traffic between OsmoBTS and OsmoNITB, as well as > the control commands between osmo-bts-trx and osmo-trx Attached are the logs for master branches of OpenBSC, OsmoBTS, and OsmoTRX leading up to the following RACH access behavior. <0004> abis_rsl.c:1423 BTS 0 CHAN RQD: no resources for SDCCH 0x2 Hopefully, somebody more familiar than myself with A-bis and related L1/L2 dependencies can provide some insight on why the above is happening or where to start debugging. I'll be happy to test any subsequent changes or look into specific parts of the A-bis code. -TT

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Re: osmo-bts[master]: fix lc15 build: put src/common/libbts.a left of -losmogsm
by Neels Hofmeyr 21 Jun '16

21 Jun '16

So, it appears we should add litecell15 to our osmo-bts build? We didn't catch my breaking it with the gsm_chan_t_names change. ~Neels

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conversations in gerrit "lost" here
by Neels Hofmeyr 21 Jun '16

21 Jun '16

I am a bit ambiguous on our use of comments in gerrit. We do discuss at least some fairly interesting things in the comments on patches waiting for approval in gerrit. When these discussions are attempted on openbsc@ or osmocom-net-gprs@, you tend to block off and redirect the discussion back to the gerrit comments infrastructure. However, we have moved the gerrit mails to a separate and very noisy mailing list, and these potentially interesting discussions are moved essentially out of the public focus. Also, if we in future would like to investigate discussion on some topic, we need to search both the main ML and the gerrit ML. IMHO it would make sense to copy the human originated comments to our "human" mailing lists, so that the automatic jenkins and gerrit notifications remain on the noisy ML while we see all discussions here. Is that easy to achieve (filter on originator of comment), and would you guys agree? ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

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release process
by Max 21 Jun '16

21 Jun '16

Hi. So far release process for new versions of osmocom components was rather quiet (unless I'm looking at the wrong place). This is different from many other open source projects some of which do announcements in ML, some use blogposts etc. Is there any interest/value in the release announcements for osmocom projects? Or maybe partially (applications but not libraries for example)? Or only major but not minor? Or not at all? To me personally the value is twofold: a) we generate some news which might be good thing to attract attention of potential contributors (if we won't overdo it :) and b) it makes it clear when some feature is "officially shipped" so we have to start paying attention to things like backward compatibility. Of course writing such announcements is boring regardless of a medium so if we follow this road we should automate the process as much as possible. What do you guys think? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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gerrit and branches
by Neels Hofmeyr 20 Jun '16

20 Jun '16

Today I've taken another close look at branches and gerrit, and have written down my conclusions here: http://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit#Submitting-… In summary: * Branch re-submission needs the workaround of tweaking the first commit. It would be nice to fix gerrit to not need this, but for the time being the effort of cosmetically changing the first commit log is acceptable. * It *is* possible to have private branches in the gerrit repos and still be able to submit them to master, with the proper project config. I have thus switched all our gerrit projects' configs to rebase-if-necessary with the flags as described on the wiki page. (Except for osmo-pcap, where we still disallow content merges.) I will now go back to pushing my "private" developments to the public repository (gerrit) under the neels/ or sysmocom/ namespaces. ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

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testing gerrit, might be down shortly
by Neels Hofmeyr 20 Jun '16

20 Jun '16

I'm testing things related to our gerrit bug report, if it's not working for you right now it may be because I'm restarting gerrit to test with/out our fix. I'll repost when I'm done. ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

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