OpenBSC July 2019

openbsc@lists.osmocom.org

17 participants
26 discussions

Using trxcon/fake_trx with PDCH for TTCN3 tests
by Oliver Smith 30 Jul '19

30 Jul '19

Hello Vadim, I'm working on the TTCN3 tests for OsmoPCU. Harald told me, that there are a few tests existing tests (such as TC_ul_tbf), that had been developed with osmo-bts-virtual/virt_phy. He also said that since there is trxcon/fake_trx nowadays, it would be better to use that instead, if it supports PDCH. From a quick "git grep", it looks like PDCH is supported in trxcon. What do you think, should it work well enough to do the switch? Thanks, Oliver -- - Oliver Smith <osmith(a)sysmocom.de> https://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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OpenBSC on 3rd party MSC
by wyao＠corrections.com 29 Jul '19

29 Jul '19

Hello All, I am working on get OpenBSC connected to a 3rd party MSC, I read from the Osmo document that I can use the bsc only mode and the osm-bsc instead of the osmo-nitb. Currently I had osmo-trx-uhd, osmo-bts-trx, osmo-bsc, and osmo-stp configured and and running, but I see a lot of below error logs in the osmo-stp console: ``````````````````````````` DLSS7 <000c> osmo_ss7.c:1468 asp-asp-dyn-0: xua_srv_conn_cb(): sctp_recvmsg() returned 56 (flags=0x80) DLM3UA <000f> m3ua.c:722 asp-asp-dyn-0: Received M3UA Message (XFER:DATA) DLM3UA <000f> m3ua.c:541 asp-asp-dyn-0: m3ua_rx_xfer DLM3UA <000f> m3ua.c:580 asp-asp-dyn-0: m3ua_rx_xfer(): M3UA data header: opc=337=0.42.1 dpc=185=0.23.1 DLSS7 <000c> osmo_ss7_hmrt.c:278 m3ua_hmdc_rx_from_l2(): dpc=185=0.23.1 not local, message is for routing DLSS7 <000c> osmo_ss7_hmrt.c:258 MTP-TRANSFER.req for DPC 185: no route! ```````````````````````````` On the BSC console, I am seeing a lot of: ``````````````````````````````` <0007> a_reset.c:106 A-RESET(msc-0)[0xb76ce0]{DISC}: (re)sending BSSMAP RESET message... <0007> osmo_bsc_sigtran.c:93 Sending RESET to MSC: RI=SSN_PC,PC=0.23.1,SSN=BSSAP ``````````````````````````````` Can anyone identify what is the issue here? Appreciates! Regards, Weiqi

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massive regressions in osmo-bts
by Harald Welte 26 Jul '19

26 Jul '19

Hi! Four builds ago, from build 585 onwards, we are seeing massive regressions in the BTS_Tests.ttcn test suite on osmo-bts master: https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bts-test/test_resu… I think this matches roughly when the TRXDv1 protocol changes were merged, it would be great if anyone making changes to osmo-bts or the test suite around July 21/22nd could investigate what's happening here. Tests against osmo-bts-latest are doing fine, so I think we can exclude a bug in the test suite. Thanks + 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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Unsubscribe
by BT Infinite 26 Jul '19

26 Jul '19

I Want to unsubscribe this email. There is an error on website.

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libosmocore for multi-threaded software
by Rafael Diniz 24 Jul '19

24 Jul '19

Hi all, I'm writing some tools for using with HF radio and SDR modems [1], and I'm using multi-threaded architecture. Do you know the status and/or which branch should I use of libosmocore in a multi-threaded application? Regards, Rafael Diniz [1] https://github.com/DigitalHERMES/rhizo-uuardop

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OpenBSC inquiry
by tyler wood 24 Jul '19

24 Jul '19

Good evening, My name is Tyler Wood, I was wondering how much yall would charge to create a dongle with OpenBSC on it and mail it to me. If I have contacted the wrong emails please let me know who I need to contact. Thank you for your time. Very Respectfully, Tyler Wood

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Re: CS Fallback in NextEPC
by Rafael Diniz 19 Jul '19

19 Jul '19

Obrigado Romeu! On 7/19/19 4:58 PM, Romeu Medeiros wrote: > Hello Rafael > > I just configure the NextEPC to connect via SGS to OSMO-MSC, like this: > > sgsap: > addr: 127.0.0.1 > port: 29118 > name: vlr.example.net <http://vlr.example.net> > tai: > plmn_id: > mcc: 724 > mnc: 21 > tac: 12345 > lai: > plmn_id: > mcc: 724 > mnc: 4 > lac: 51544 > > And the configuration in the MSC: > > sgs > local-port 29118 > local-ip 0.0.0.0 > vlr-name vlr.example.net <http://vlr.example.net> > > And configure the IMSI in the Osmo-HLR and NextEPC-HSS > > If you need more help tell me. > > > Thanks > > Romeu Medeiros > > > And > > On Fri, Jul 19, 2019 at 1:31 PM Rafael Diniz <rafael(a)rhizomatica.org > <mailto:rafael@rhizomatica.org>> wrote: > > Hi all, > > I'd also like to test SMS and CSFB in LTE. I have some experience with > the Osmocom GSM stack, but not much with the NextEPC LTE. Could you > point me which fields should I set in the configuration files? > > Thanks, > Rafael Diniz > > On 7/13/19 6:35 PM, Romeu Medeiros wrote: > > Hello Sukchan and friends. > > > > I'm trying to use the CSFB in test lab, and every time that > nextepc send > > the UEContextModificationRequest, the UE respond with an > > UEContextModificationFaliure [ Protocol-cause=semantic-error ]. > > > > image.png > > > > I'm looking why I'm getting this. Someone have any idea? > > > > Thanks > > > > Romeu Medeiros > > > > On Thu, Jul 11, 2019 at 12:15 PM Sukchan Lee <acetcom(a)gmail.com > <mailto:acetcom@gmail.com> > > <mailto:acetcom@gmail.com <mailto:acetcom@gmail.com>>> wrote: > > > > Dear Osmocom & NextEPC Community, > > > > Today I've added CS Fallback and released NextEPC v0.5.0 > > > > So, I'd just like to test this part with Osmocom project, but it > > seems to be a difficult task. The reason is why I have little > > knowledge about 2G/3G. Nevertheless, I will try to do it > > > > BTW, I don't know if there is anyone who wants to integrate > this big > > thing. > > Even though I'm not sure if this will help, but let me > introduce the > > configuration of the NextEPC. > > > > To use SGsAP, change the mme.conf as follows: > > > > # > > # <sgsap> > > # > > # o Single MSC/VLR > > # sgsap: > > # addr: 127.0.0.2 > > # plmn_id: > > # mcc: 001 > > # mnc: 01 > > # tac: 4130 > > # lac: 43690 > > # > > # o Multiple MSC/VLR > > # sgsap: > > # - addr: 127.0.0.2 > > # plmn_id: > > # mcc: 001 > > # mnc: 01 > > # tac: 4131 > > # lac: 43692 > > # - addr > > # - 127.0.0.3 > > # - fe80::2%lo0 > > # plmn_id: > > # mcc: 001 > > # mnc: 01 > > # tac: 4132 > > # lac: 43692 > > # - name: msc.open5gs.org <http://msc.open5gs.org> > <http://msc.open5gs.org> > > # plmn_id: > > # mcc: 001 > > # mnc: 01 > > # tac: 4133 > > # lac: 43693 > > # > > > > FYI, I also attach the pcap that I run with nextepc simulator > as below. > > > > $ ./tests/testcsfb > > mo-idle-test : SUCCESS > > mt-idle-test : SUCCESS > > mo-active-test : SUCCESS > > mt-active-test : SUCCESS > > All tests passed. > > > > Feel free to raise any questions about this things. > > > > Best Regards, > > Sukchan > > >

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Re: CS Fallback in NextEPC
by Rafael Diniz 19 Jul '19

19 Jul '19

Hi all, I'd also like to test SMS and CSFB in LTE. I have some experience with the Osmocom GSM stack, but not much with the NextEPC LTE. Could you point me which fields should I set in the configuration files? Thanks, Rafael Diniz On 7/13/19 6:35 PM, Romeu Medeiros wrote: > Hello Sukchan and friends. > > I'm trying to use the CSFB in test lab, and every time that nextepc send > the UEContextModificationRequest, the UE respond with an > UEContextModificationFaliure [ Protocol-cause=semantic-error ]. > > image.png > > I'm looking why I'm getting this. Someone have any idea? > > Thanks > > Romeu Medeiros > > On Thu, Jul 11, 2019 at 12:15 PM Sukchan Lee <acetcom(a)gmail.com > <mailto:acetcom@gmail.com>> wrote: > > Dear Osmocom & NextEPC Community, > > Today I've added CS Fallback and released NextEPC v0.5.0 > > So, I'd just like to test this part with Osmocom project, but it > seems to be a difficult task. The reason is why I have little > knowledge about 2G/3G. Nevertheless, I will try to do it > > BTW, I don't know if there is anyone who wants to integrate this big > thing. > Even though I'm not sure if this will help, but let me introduce the > configuration of the NextEPC. > > To use SGsAP, change the mme.conf as follows: > > # > # <sgsap> > # > # o Single MSC/VLR > # sgsap: > # addr: 127.0.0.2 > # plmn_id: > # mcc: 001 > # mnc: 01 > # tac: 4130 > # lac: 43690 > # > # o Multiple MSC/VLR > # sgsap: > # - addr: 127.0.0.2 > # plmn_id: > # mcc: 001 > # mnc: 01 > # tac: 4131 > # lac: 43692 > # - addr > # - 127.0.0.3 > # - fe80::2%lo0 > # plmn_id: > # mcc: 001 > # mnc: 01 > # tac: 4132 > # lac: 43692 > # - name: msc.open5gs.org <http://msc.open5gs.org> > # plmn_id: > # mcc: 001 > # mnc: 01 > # tac: 4133 > # lac: 43693 > # > > FYI, I also attach the pcap that I run with nextepc simulator as below. > > $ ./tests/testcsfb > mo-idle-test : SUCCESS > mt-idle-test : SUCCESS > mo-active-test : SUCCESS > mt-active-test : SUCCESS > All tests passed. > > Feel free to raise any questions about this things. > > Best Regards, > Sukchan >

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SNOW-3G / ZUC implementation under FOSS license?
by Paul Sutton 16 Jul '19

16 Jul '19

Hi Harald, The srsLTE implementation is taken from the ETSI specs simulation program listings: http://cryptome.org/uea2-uia2/etsi_sage_06_09_06.pdf and http://cryptome.org/uea2-uia2/snow_3g_spec.pdf https://www.etsi.org/intellectual-property-rights#mytoc3 and https://www.etsi.org/images/files/IPR/etsi-ipr-policy.pdf outline the copyright licensing details for software incorporated in ETSI standards however I have not taken legal advice on compatibility of this license with AGPLv3. >From a quick review, it looks like the CryptoMobile and NextEPC versions have taken the same approach. It would be good as you say to have a "clean copyright" implementation - perhaps this is something we could help with. Best regards, Paul > Hi! > > I'm now at a point where I would like to add SNOW-3G (EIA1/EEA1) support for > NAS integrity protection and ciphering to my upcoming TTCN-3 testsuite for the MME. > > However, it seems there is no real FOSS implementation of the SNOW-3G algoritm > around? All I could find was: > > * https://github.com/mitshell/CryptoMobile with unclear source of the code, > without a copyright statement or license annotation > > * https://github.com/rcatolino/libressl-snow3g/blob/master/crypto/snow3g/main… > without a copyright statement or license annotation > > * https://github.com/Jadson27101/SNOW_3G in go, > without a copyright statement or license annotation > > * https://github.com/KsirbJ/SNOW-3G > without a copyright statement or license annotation > > * https://github.com/open5gs/nextepc/blob/master/src/mme/snow-3g.c > without a copyright statement or license annotation. Looks rather similar > to CryptoMobile. Possible just copy+pasted from ETSI reference implementation? > > * https://github.com/srsLTE/srsLTE/blob/master/lib/src/common/snow_3g.cc > also contains no coypright statement or license, but might be construed > to be AGPLv3 like all of srsLTE. However, it states it is "adapted" > from ETSI/SAGE specifications. Does that mean it is an independent > implementation of the algorithm by just reading the specs, or does it > contain actual ETSI-copyrighted code? > > It's also odd that the 3GPP specs (35.215 / 35.216, with usual copyright statement) > don't contain any actual information but all just point to the ETSI SAGE specification > which can be found (at the very least) here: > https://www.gsma.com/aboutus/wp-content/uploads/2014/12/uea2uia2d1v21.pdf > and interestingly doesn't contain any copyright statement whatsoever. > > This discussion is not about any potentially 'essential patents' that may or may > not apply in some jurisdictions on the algorithm itself. I'm currently only interested > in a "clean copyright" implementation of any of the EIA/EEA implementations used > on the LTE NAS layer. > > I'd appreciate any useful comments. Thanks! > > -- > - Harald Welte <laforge at gnumonks.org <https://lists.osmocom.org/mailman/listinfo/openbsc>> http://laforge.gnumonks.org/ > ============================================================================ > "Privacy in residential applications is a desirable marketing option." > (ETSI EN 300 175-7 Ch. A6) -- ________________________________________________________________ Paul Sutton Ph.D. Software Radio Systems (SRS) http://www.softwareradiosystems.com paul(a)softwareradiosystems.com PGP Key ID: 3B4A5292 Fingerprint: B0AC 19C9 B228 A6EB 86E1 82B2 90C7 EC95 3B4A 5292 ________________________________________________________________

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CS Fallback in NextEPC
by Sukchan Lee 13 Jul '19

13 Jul '19

Dear Osmocom & NextEPC Community, Today I've added CS Fallback and released NextEPC v0.5.0 So, I'd just like to test this part with Osmocom project, but it seems to be a difficult task. The reason is why I have little knowledge about 2G/3G. Nevertheless, I will try to do it BTW, I don't know if there is anyone who wants to integrate this big thing. Even though I'm not sure if this will help, but let me introduce the configuration of the NextEPC. To use SGsAP, change the mme.conf as follows: # # <sgsap> # # o Single MSC/VLR # sgsap: # addr: 127.0.0.2 # plmn_id: # mcc: 001 # mnc: 01 # tac: 4130 # lac: 43690 # # o Multiple MSC/VLR # sgsap: # - addr: 127.0.0.2 # plmn_id: # mcc: 001 # mnc: 01 # tac: 4131 # lac: 43692 # - addr # - 127.0.0.3 # - fe80::2%lo0 # plmn_id: # mcc: 001 # mnc: 01 # tac: 4132 # lac: 43692 # - name: msc.open5gs.org # plmn_id: # mcc: 001 # mnc: 01 # tac: 4133 # lac: 43693 # FYI, I also attach the pcap that I run with nextepc simulator as below. $ ./tests/testcsfb mo-idle-test : SUCCESS mt-idle-test : SUCCESS mo-active-test : SUCCESS mt-active-test : SUCCESS All tests passed. Feel free to raise any questions about this things. Best Regards, Sukchan

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OpenBSC July 2019