baseband-devel

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3 participants
2004 discussions

redmine e-mails broken from 08/26 through 08/31
by Harald Welte 31 Aug '17

31 Aug '17

Dear Osmocom community, from August 26th 06:54 UTC through August 31st 06:22 UTC our Osmocom.org redmine could not send any e-mails. This was due to a configuration file syntax error introduced by me, my apologies. If you rely on redmine e-mail notifications to the issues you have subscribed to, please double-check as related notifications during that interval were unfortunately lost. Best regards, Harald p.s.: The reason for the config change was to enable e-mail notifications from jenkins.osmocom.org (which it now has, if you want to configure e.g. post-build notification actions). -- - 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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ccch_scan error
by Devil 08 Aug '17

08 Aug '17

Hello, I have this error when I try to choose channel of baseband near me: <000c> l1ctl.c:114 FBSB RESP: result=255 I'm using Motorola C115 Phone, flashed layer1.compalram.bin, burst_ind branch Are there any solutions of this problem? Sent with [ProtonMail](https://protonmail.com) Secure Email.

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Re: RRLP
by Vadim Yanitskiy 03 Aug '17

03 Aug '17

Hi, > And I found it's possible to acrivate some setting in > OnmoNITB but how can I do the actual request? I cannot > find anything in the user manual, vty manual or in the menu... This request is being sent automatically every time when a dedicated channel between MS and BTS is established. With best regards, Vadim Yanitskiy.

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RRLP
by Anton Gorbachev 02 Aug '17

02 Aug '17

Dear developers, I found that RRLP requests are possible within OsmoNITB. http://security.osmocom.org/trac/wiki/RRLP The popular Free Software implementations of the GSM network OpenBSC <http://openbsc.osmocom.org/> and OpenBTS <http://openbts.sourceforge.net/> both support RRLP inquiries to mobile phones And I found it's possible to acrivate some setting in OnmoNITB but how can I do the actual request? I cannot find anything in the user manual, vty manual or in the menu... Thanks in advance!

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nano 3g s8
by Erich Dachleger 01 Aug '17

01 Aug '17

Hi,Does anybody now if the nano 3g s8 is available anywhere. They seem to be out of stock on ebay. Regards

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OSMOCOM-BB HandOver
by Muhammad Awais Aslam 27 Jul '17

27 Jul '17

Hi, Handover is not working in dedicated mode. Is there anyone who can help me out? Regards Awais

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Re: Phone not receiving calls
by Vadim Yanitskiy 26 Jul '17

26 Jul '17

Hi, > Is it possible to manually give the MS a timeslot number to listen > to after it has performed location update ? Yes, you can. See the L1CTL_DM_EST_REQ in L1CTL protocol implementation. But keep in mind, that as soon as you switch your phone to another timeslot (other than BCCH), you will be unable to 'hear' Paging Requests. Regarding to your initial question, you was asked to provide the traffic dumps, but there are still nothing. So, it's still difficult to understand, what's happening on your side :/ With best regards, Vadim Yanitskiy.

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Re: Phone not receiving calls
by Vadim Yanitskiy 21 Jul '17

21 Jul '17

Hi, Don't get me wrong, but your current description sounds like "I have a problem, but I wouldn't say any details about that". Please provide at least mobile application logs, and also try to figure out some things yourself: 1) What is difference between both SIM cards you use? 2) Does mobile with "non-working" SIM perform successful LU? 3) Does mobile with "non-working" SIM receive any Paging Request? 4) Does one answer to Paging Request by sending Paging Response? 5) Then, does the L1 switch to a dedicated channel? 6) What is happening on a dedicated channel? 7) ... ? OsmocomBB is not for end users, so you should do / learn a lot of things yourself. After all, the source code is always available. With best regards, Vadim Yanitskiy.

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Documentation on how to use virtual Um between BTS + MS
by Harald Welte 19 Jul '17

19 Jul '17

Hi! Next to the announcement (http://osmocom.org/news/75) I've put together some guide in the wiki as to how the Virtual Um interface can be used with the osmo-bts-virtual, virtphy and mobile programs running all on your local PC: https://osmocom.org/projects/cellular-infrastructure/wiki/Virtual_Um Feel free to try it out and/or improve the wiki page and/or let me know if something is not sufficintly clear. I intentionally don't want to repeat general information about configuring OsmoNITB or using OsmocomBB. The above-mentioned page should only document those aspects that are different from the classic setup with real hardware. I'm now investigating some more of the bugs I'm starting to find with using the VirtualUm interface from my related TTCN-3 testsuite, at this time particularly https://osmocom.org/issues/2380 Will document that testsuite once it can actually run as expected. 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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VirtPHY and many OsmocomBB "mobile" instances
by Harald Welte 19 Jul '17

19 Jul '17

Hi Sebastian and team, I've been thinking a bit on how to implement many concurrent OsmocomBB instances in a setup where we use Sebastian's OsmocomBB virt_phy and osmo-bts-virtual. The point of having virtual mobile phones is that you can easily simulate many. Many more than you can easily physically manage, so I'm thinking definitely of hundreds and preferably thousands of MSs. This way we can easily simulate load on BTSs, use up all channels, get in overload situations where we have to reject immediate assignments, etc. Right now, the data structures in virt_phy are a bit convoluted, and there is no clear separation between the state of the actual GSMTAP socket and the MS-specific state attached to one given L1CTL connection. So if you want to run multiple MS, it seems currently one would have to run multiple pairs of { virt_phy, mobile }, one pair for each MS. This leads to a rather large set of processes, and all have to process their own copy of the same UDP messages received on the multicast socket. connection-oriented unix domain sockets can very well handle multiple connections (similar to a single TCP server being able to acccept many incoming connections). So if the MS-specific state (like the scheduler / L1CTL related state) is properly separated from the GSMTAP side, any number of "mobile" programs (or other L1CTL users) could actually connect to the same virt_phy program and share it. Do you think this is worth it? I would really like the idea of just having to start one program, and not having to configure each "mobile" instance with a different l1sap socket name, manage to close the processes vice-versa, etc. Theoretically one could stay in the current 1:1 model, but I somehow find 1:N more appealing. 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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