OpenBSC June 2023

openbsc@lists.osmocom.org

4 participants
24 discussions

BSC to multiple external MSCs
by Varoon Greedharry 22 Jun '23

22 Jun '23

Hello, I know it's quite a dummy question (Beginner) but I'm actually trying the BSC to two external MSCs but the attempt failed. As per the doc, I did configure the cs7 instance. Is there an example configuration file which I could go through. -- Best Regards, Varoon

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Re: OpenBSC Digest, Vol 104, Issue 1
by Sipos Csaba 21 Jun '23

21 Jun '23

Hi Neels, Sorry for the late response. As there is still a slight chance that the issue on my side is HW related, I digged out my old MetroSite with 4 TRX as that is a little bit smaller and easier to move compared to the Ultra cabinet :-) So I will conduct some tests with it in the next couple days. Lets say the issue is the same: what exactly do you need from me to maybe look into it? I assume E1 pcap and logs. If you have a specific log mask, or you need something else, please let me know. Regards, Csaba

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OsmoDevCall on Jun 21, 2023: FR/HR/EFR voice codecs in Osmocom RAN
by Harald Welte 21 Jun '23

21 Jun '23

Dear Osmocom community, we're happy to announce the next incarnation of OsmoDevCall. when: June 21, 2023 at 20:00 CEST where: https://osmocom.org/OsmoDevCall (Big Blue Button) This time, @falconia will be leading a discussion on FR/HR/EFR voice codecs in Osmocom RAN This meeting will have the following schedule: 20:00 meet + greet 20:10 topic as outlined above 21:00 unstructured supplementary social event [*] Attendance is free of charge and open to anyone with an interest in Osmocom or open source cellular technologies. More information about OsmoDevCall, including the schedule for further upcoming events can be found at https://osmocom.org/projects/osmo-dev-con/wiki/OsmoDevCall Looking forward to meeting you soon! Best regards, Harald [*] this is how we started to call the "unstructured" part of osmocom developer conferences in the past, basically where anyone can talk about anything, no formal schedule or structure. -- - Harald Welte <laforge(a)osmocom.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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Nokia UltraSite
by Sipos Csaba 08 Jun '23

08 Jun '23

Hi Harald, I made some progress with the Nokia UltraSite and managed to fix its backplane, so at least I was able to continue with reintroducing hopping control with the first 2 TRX slots of the cabinet. During this process I realized that apparently even multi-TRX support is broken, which was working on the old OpenBSC codebase in 2016. If only the first TRX is configured the BTS bootstraps fine, but when a second TRX is configured, the unit goes into this weird state: the first TRX loops through configurng and waiting for LAPD states and stays in configuring state, while the second TRX is stuck ad supervisory state where TRX test is possible (it does pass the test). I used my old multi-TRX config file that actually worked with UltraSite (and MetroSite) where the second TRX only has TCH/F so nothing fancy, no hopping or anything like that. I wonder if my modification of moving the RSL bootsrap to after CONF_COMPLETE somehow changed something, maybe the BTS requires the RSL LAPD links to be up during the CONF state? Or the new FSM lchan refactoring might have introduced this in 2018... So apparently we have some more basic issues here then hopping :-) Regards, Csaba

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OpenBSC June 2023