OpenBSC May 2020

openbsc@lists.osmocom.org

7 participants
7 discussions

Pysim error: SW match failed
by Martin Nagy 16 Aug '25

16 Aug '25

Hi all, After buying a super Sim Kit (16 in 1) from China, I tried the reader (green PCB inside a blue transparent plastic case with a blue LED) and SIM (identified as a fakesupersim) with pysim tool. However i am getting the following error: /pySim-prog.py -n 26C3 -c 49 -x 262 -y 42 -z 1234 -j 1 -t auto Insert card now (or CTRL-C to cancel) Autodetected card type fakemagicsim Generated card parameters : > Name : 26C3 > SMSP : e1ffffffffffffffffffffffff058100945555ffffffffffff000000 > ICCID : 8949262427518313026 > MCC/MNC : 262/42 > IMSI : 262422461512085 > Ki : 7b74741a1ee14337ec23f9ab92a13648 > OPC : ccd867d60797d8d45354a51b3ef568ff Programming ... Traceback (most recent call last): File "./pySim-prog.py", line 530, in <module> card.program(cp) File "/home/nadicek/pysim/pysim/pySim/cards.py", line 231, in program self._scc.update_binary('6f30', hplmn + 'ff' * (tl-3)) File "/home/nadicek/pysim/pysim/pySim/commands.py", line 53, in update_binary return self._tp.send_apdu_checksw(pdu) File "/home/nadicek/pysim/pysim/pySim/transport/__init__.py", line 87, in send_apdu_checksw raise RuntimeError("SW match failed ! Expected %s and got %s." % (sw.lower(), rv[1])) RuntimeError: SW match failed ! Expected 9000 and got 9804. I checked mailing lists and haven’t found anybody who had similar problem with pysim. Also I have tried forcing different models of SIM, but nothing is working. Obviously I can remove this check from the script file (__init__.py in /pySim/transport), however somebody had a reason to put such condition there. I would like to ask if it is safe to remove that line of code and the purpose of that line of code. Thanks a lot and best regards Martin

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Re: Help with sccp library
by mosbah abdelkader 07 Jul '25

07 Jul '25

> I don't understand. This callback will be called with data you need to write > to the network. In case of MTP Level3 you will need to wrap that around the > msgb you got. I means: is the interaction with mtp3 layer implemented (is sending sccp data by mtp3 implemented by the library?)? Also, what about the reception of data from mtp3 layer. is that implemented in the sccp lib. I am asking these questions because I see the code of mtp3 in the lib but no significant call is present in the sccp part of the lib. Thank you for your help.

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dynamic traffic channels
by Neels Hofmeyr 20 May '25

20 May '25

On Tue, Jun 28, 2016 at 10:05:28AM +0200, Harald Welte wrote: > [translated from german] > is it certain that we switch a channel to PDCH only when > gprs mode != none? A TS can be GSM_PCHAN_TCH_F_PDCH; those are the only ones for which we send a PDCH ACT message. We send a PDCH ACT message - during init (CHANNEL OML's state changed to enabled -> send PDCH ACT), - and upon channel release ack when pchan == GSM_PCHAN_TCH_F_PDCH. So the question is, when we receive a channel release ack, could that be the PDCH release and we switch PDCH right back on by accident? No, because we only receive a chan rel ack when the *TCH/F* is being released. That is because the PDCH release is initiated "internally" from the PDCH DEACT, and thus this condition in common/rsl.c rsl_tx_rf_rel_ack() catches on, which existed before dyn PDCH: if (lchan->rel_act_kind != LCHAN_REL_ACT_RSL) { LOGP(DRSL, LOGL_NOTICE, "%s not sending REL ACK\n", gsm_lchan_name(lchan)); return 0; } In rsl_rx_rf_chan_rel() the rel_act_kind is set to LCHAN_REL_ACT_RSL, but not in the rsl_rx_dyn_pdch(). This is analogous to the ip.access way -- the ip.access nanobts replies to a PDCH DEACT with a PDCH DEACT ACK and doesn't send a separate channel release ack. Maybe we could set rel_act_kind to some new LCHAN_REL_ACT_IPAC_DYN_PDCH for clarity? (But we shouldn't actually send a release ack, to stay compatible.) Even though it works as-is, we should indeed add another flag check: - We do check the flags that no ACT/DEACT is already pending; - And we do send a PDCH DEACT only if ts->flags & TS_F_PDCH_ACTIVE; - But we would send a PDCH ACT despite ts->flags & TS_F_PDCH_ACTIVE. This should never happen, but it would make sense to ensure that. ~Neels

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Problem while running NIB on Open Cellular Base sation
by Brackley Casinga 31 Jan '24

31 Jan '24

Hi, My name is Brackley Cassinga Form DRC, we run a community network called pamoja net where we offer gsm services using osmocom open source software and OC Base station. Recently I have tried to install another base station as the same installed but I could not find any resource guiding through all the steps to take to run NIB on a base station. I'm currently running Ubuntu and I will appreciate if you could guide me on the installation of BSC,hlr,MSC , in order to run a basic gsm network. Thank you. Regards -- *Ir Brackley heshima Casinga **Pacifique* *CEO and Founder of kwanzatechnologie* KwanzaTechnologies ,GlobalElectronics +243977265291 | +243977265291 | Pcassinga(a)gmail.com/ brackley(a)ensemblepourladifference.org www.kwantechnologies.jimdosite.com <http://www.kwantechnologies.com/> | Skype: Brackley cassinga <https://webapp.wisestamp.com/#> Av Semliki N 43

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Osmo-SIP-Connector Version 6
by Sonny Lafuente 29 May '20

29 May '20

Hi Community, Does anyone here tried to upgrade the your working OSMO environment to its latest version? I have the experience where I upgraded my working osmo to the latest version and I have encountering some problem between the connection of osmo-nitb and osmo-sip-connector. For the latest sip connector update it will communicate the connection going to osmo-msc. Since I don’t use the osmo-msc instead I am using the osmo-nitb for the standalone project. Below is the error I have experiencing right now in the osmo-sip-connector and osmo-nitb. SIP Connector Logs: <0001> mncc.c:845 Incompatible version(5) expected 6 <0001> mncc.c:936 Reconnected to /tmp/msc_mncc <0001> mncc.c:841 Got hello message version 5 <0001> mncc.c:845 Incompatible version(5) expected 6 <0001> mncc.c:936 Reconnected to /tmp/msc_mncc <0001> mncc.c:841 Got hello message version 5 <0001> mncc.c:845 Incompatible version(5) expected 6 OSMO-NITB Logs: Fri May 29 13:13:16 2020 <0006> mncc_sock.c:84 MNCC Socket has LOST connection Fri May 29 13:13:16 2020 <0001> gsm_04_08.c:463 Clearing all currently active transactions!!! Fri May 29 13:13:21 2020 <0006> mncc_sock.c:271 MNCC Socket has connection with external call control application Fri May 29 13:13:21 2020 <0006> mncc_sock.c:84 MNCC Socket has LOST connection Fri May 29 13:13:21 2020 <0001> gsm_04_08.c:463 Clearing all currently active transactions!!! Here are the configuration file of osmo-nitb and osmo-sip-connector and how we run the command. SIP Connector: Command to run: ./osmo-sip-connector -c ~/osmo-sip-connector.cfg Config File: # sip local 192.168.1.166 5062 remote 192.168.1.166 5060 sofia-sip log-level 2 mncc socket-path /tmp/msc_mncc app OSMO NITB: Command to run: ./osmo-nitb -C -c ~/osmo-nitb.cfg -T -P -l /home/hlr.sqlite3 -M /tmp/msc_mncc Config File: line vty no login ! e1_input e1_line 0 driver ipa e1_line 0 port 0 no e1_line 0 keepalive network network country code 94 mobile network code 1 short name 1 long name 1 auth policy accept-all authorized-regexp .* location updating reject cause 13 encryption a5 0 neci 1 paging any use tch 0 rrlp mode none mm info 1 handover 0 handover window rxlev averaging 10 handover window rxqual averaging 1 handover window rxlev neighbor averaging 10 handover power budget interval 6 handover power budget hysteresis 3 handover maximum distance 9999 timer t3109 1 timer t3105 1 timer t3113 60 timer t3103 1 timer t3122 10 timer t3101 10 dyn_ts_allow_tch_f 0 subscriber-keep-in-ram 1 bts 0 type sysmobts band GSM900 cell_identity 1 location_area_code 1 base_station_id_code 63 ms max power 0 cell reselection hysteresis 4 rxlev access min 0 periodic location update 30 radio-link-timeout 32 channel allocator descending rach tx integer 9 rach max transmission 7 channel-descrption attach 1 channel-descrption bs-pa-mfrms 5 channel-descrption bs-ag-blks-res 1 early-classmark-sending forbidden ip.access unit_id 1000 0 oml ip.access stream_id 255 line 0 neighbor-list mode automatic codec-support fr hr efr amr amr tch-h modes 0 amr tch-h start-mode auto gprs mode gprs gprs 11bit_rach_support_for_egprs 0 gprs routing area 1 gprs network-control-order nc0 gprs cell bvci 2 gprs cell timer blocking-timer 3 gprs cell timer blocking-retries 3 gprs cell timer unblocking-retries 3 gprs cell timer reset-timer 3 gprs cell timer reset-retries 3 gprs cell timer suspend-timer 10 gprs cell timer suspend-retries 3 gprs cell timer resume-timer 10 gprs cell timer resume-retries 3 gprs cell timer capability-update-timer 10 gprs cell timer capability-update-retries 3 gprs nsei 101 gprs ns timer tns-block 3 gprs ns timer tns-block-retries 3 gprs ns timer tns-reset 3 gprs ns timer tns-reset-retries 3 gprs ns timer tns-test 30 gprs ns timer tns-alive 3 gprs ns timer tns-alive-retries 10 gprs nsvc 0 nsvci 101 gprs nsvc 0 local udp port 23000 gprs nsvc 0 remote udp port 23000 gprs nsvc 0 remote ip 127.0.0.2 gprs nsvc 1 nsvci 0 gprs nsvc 1 local udp port 0 gprs nsvc 1 remote udp port 0 gprs nsvc 1 remote ip 0.0.0.0 no force-combined-si trx 0 rf_locked 0 arfcn 74 nominal power 0 rsl e1 tei 0 timeslot 0 phys_chan_config CCCH+SDCCH4 hopping enabled 0 timeslot 1 phys_chan_config TCH/F hopping enabled 0 timeslot 2 phys_chan_config TCH/F hopping enabled 0 timeslot 3 phys_chan_config TCH/F hopping enabled 0 timeslot 4 phys_chan_config TCH/F hopping enabled 0 timeslot 5 phys_chan_config TCH/F hopping enabled 0 timeslot 6 phys_chan_config TCH/F hopping enabled 0 timeslot 7 phys_chan_config TCH/F hopping enabled 0 trx 1 rf_locked 0 arfcn 65 nominal power 0 rsl e1 tei 0 timeslot 0 phys_chan_config CCCH+SDCCH4 hopping enabled 0 timeslot 1 phys_chan_config TCH/F hopping enabled 0 timeslot 2 phys_chan_config TCH/F hopping enabled 0 timeslot 3 phys_chan_config TCH/F hopping enabled 0 timeslot 4 phys_chan_config TCH/F hopping enabled 0 timeslot 5 phys_chan_config TCH/F hopping enabled 0 timeslot 6 phys_chan_config TCH/F hopping enabled 0 timeslot 7 phys_chan_config TCH/F hopping enabled 0 mncc-int default-codec tch-f fr default-codec tch-h amr nitb subscriber-create-on-demand subscriber-create-on-demand random 100000 199999 no assign-tmsi smpp local-tcp-ip 127.0.0.1 2776 system-id password policy closed smpp-first esme root password password default-route Thank you. Sonny

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How to 'POWERON' the osmo-trx
by cruise 11 May '20

11 May '20

hello: I installed the osmo-NITB on ubuntu18.04, including osmo-trx,osmo-bts,and openbsc. The following is the print messages when these three applications start up. *1.osmo-trx* $ sudo osmo-trx-uhd -C osmo-trx-usrp_b200.cfg Info: SSE3 support compiled in and supported by CPU Info: SSE4.1 support compiled in and supported by CPU Tue May 5 12:36:27 2020 DLGLOBAL <0007> telnet_interface.c:104 Available via telnet 127.0.0.1 4237 Tue May 5 12:36:27 2020 DLCTRL <000e> control_if.c:911 CTRL at 127.0.0.1 4236 Tue May 5 12:36:27 2020 DMAIN <0000> osmo-trx.cpp:484 [tid=139758118945664] Config Settings Log Level............... 0 Device args............. TRX Base Port........... 5700 TRX Address............. 127.0.0.1 GSM BTS Address......... 127.0.0.1 Channels................ 1 Tx Samples-per-Symbol... 4 Rx Samples-per-Symbol... 4 EDGE support............ 0 Extended RACH support... 0 Reference............... 1 Filler Burst Type....... Empty bursts Filler Burst TSC........ 0 Filler Burst RACH Delay. 0 Multi-Carrier........... 0 Tuning offset........... 0 RSSI to dBm offset...... 28 Swap channels........... 0 Tx Antennas............. '<default>' Rx Antennas............. '<default>' Tue May 5 12:36:27 2020 DMAIN <0000> osmo-trx.cpp:438 [tid=139758118945664] Setting SCHED_RR priority 18 Tue May 5 12:36:27 2020 DDEVDRV <0006> log.cpp:460 [tid=139758008424192] [UHD] linux; GNU C++ version 7.4.0; Boost_106501; UHD_3.14.0.HEAD-0-g6875d061 Tue May 5 12:36:27 2020 DDEV <0005> UHDDevice.cpp:470 [tid=139758118945664] Using discovered UHD device type=b200,name=Lab_B210,serial=86680AA,product=B210 Tue May 5 12:36:28 2020 DDEVDRV <0006> b200_impl.cpp:386 [tid=139758008424192] [B200] Detected Device: B210 Tue May 5 12:36:29 2020 DDEVDRV <0006> b200_iface.cpp:441 [tid=139758008424192] [B200] Loading FPGA image: /home/cruise/openBSC/osmo-trx/usrp_b210_fpga.bin... Tue May 5 12:36:45 2020 DDEVDRV <0006> b200_impl.cpp:433 [tid=139758008424192] [B200] Operating over USB 3. Tue May 5 12:36:45 2020 DDEVDRV <0006> b200_impl.cpp:484 [tid=139758008424192] [B200] Detecting internal GPSDO.... Tue May 5 12:36:46 2020 DDEVDRV <0006> gps_ctrl.cpp:253 [tid=139758008424192] [GPS] No GPSDO found Tue May 5 12:36:46 2020 DDEVDRV <0006> b200_impl.cpp:587 [tid=139758008424192] [B200] Initialize CODEC control... Tue May 5 12:36:46 2020 DDEVDRV <0006> b200_impl.cpp:650 [tid=139758008424192] [B200] Initialize Radio control... Tue May 5 12:36:46 2020 DDEVDRV <0006> b200_impl.cpp:957 [tid=139758008424192] [B200] Performing register loopback test... Tue May 5 12:36:46 2020 DDEVDRV <0006> b200_impl.cpp:966 [tid=139758008424192] [B200] Register loopback test passed Tue May 5 12:36:46 2020 DDEVDRV <0006> b200_impl.cpp:957 [tid=139758008424192] [B200] Performing register loopback test... Tue May 5 12:36:46 2020 DDEVDRV <0006> b200_impl.cpp:966 [tid=139758008424192] [B200] Register loopback test passed Tue May 5 12:36:46 2020 DDEVDRV <0006> b200_impl.cpp:758 [tid=139758008424192] [B200] Setting master clock rate selection to 'automatic'. Tue May 5 12:36:46 2020 DDEVDRV <0006> b200_impl.cpp:1013 [tid=139758008424192] [B200] Asking for clock rate 16.000000 MHz... Tue May 5 12:36:46 2020 DDEVDRV <0006> b200_impl.cpp:1024 [tid=139758008424192] [B200] Actually got clock rate 16.000000 MHz. Tue May 5 12:36:47 2020 DMAIN <0000> UHDDevice.cpp:211 [tid=139758118945664] Antennas configured successfully Tue May 5 12:36:47 2020 DDEVDRV <0006> multi_usrp.cpp:502 [tid=139758008424192] [MULTI_USRP] Setting master clock rate selection to 'manual'. Tue May 5 12:36:47 2020 DDEVDRV <0006> b200_impl.cpp:1013 [tid=139758008424192] [B200] Asking for clock rate 26.000000 MHz... Tue May 5 12:36:47 2020 DDEVDRV <0006> b200_impl.cpp:1024 [tid=139758008424192] [B200] Actually got clock rate 26.000000 MHz. Tue May 5 12:36:47 2020 DDEV <0005> UHDDevice.cpp:275 [tid=139758118945664] Rates configured for B210 4 SPS Tue May 5 12:36:47 2020 DDEV <0005> UHDDevice.cpp:235 [tid=139758118945664] Supported Tx gain range [0; 89.75] Tue May 5 12:36:47 2020 DDEV <0005> UHDDevice.cpp:240 [tid=139758118945664] Supported Rx gain range [0; 76] Tue May 5 12:36:47 2020 DDEV <0005> UHDDevice.cpp:244 [tid=139758118945664] Default setting Tx gain for channel 0 to 44.875 Tue May 5 12:36:47 2020 DDEV <0005> UHDDevice.cpp:251 [tid=139758118945664] Default setting Rx gain for channel 0 to 38 Tue May 5 12:36:47 2020 DDEV <0005> UHDDevice.cpp:569 [tid=139758118945664] Device configuration: Single USRP: Device: B-Series Device Mboard 0: B210 RX Channel: 0 RX DSP: 0 RX Dboard: A RX Subdev: FE-RX2 TX Channel: 0 TX DSP: 0 TX Dboard: A TX Subdev: FE-TX2 Tue May 5 12:36:47 2020 DMAIN <0000> osmo-trx.cpp:532 [tid=139758118945664] -- Transceiver active with 1 channel(s) *_/when the osmo-bts-trx launched later, the following messages will arise, shows that the osmo-trx received the 'POWEROFF' command and feed back the 'RESPONSE' to osmo-bts-trx./_* Tue May 5 12:42:44 2020 DTRXCTRL <0002> Transceiver.cpp:832 [tid=139758118945664][chan=0] command is 'POWEROFF' Tue May 5 12:42:44 2020 DTRXCTRL <0002> Transceiver.cpp:977 [tid=139758118945664][chan=0] response is 'RSP POWEROFF 0' ** *_/POWERON command was not launched. and the USRP TX/RX LED was not lighted./_* *2.osmo-bts-trx* $ sudo osmo-bts-trx ((*)) | / \ OsmoBTS <0017> control_if.c:911 CTRL at 127.0.0.1 4238 <0010> telnet_interface.c:104 Available via telnet 127.0.0.1 4241 <0012> input/ipaccess.c:1024 enabling ipaccess BTS mode, OML connecting to 192.168.122.1:3002 <000b> trx_if.c:1174 phy0.0: Open transceiver ** *_/About one minutes later, the osmo-bts-trx will exit automatically, and the following messages was printed./_* <0012> e1_input.c:243 abis_sendmsg: msg->dst == NULL: 0c 12 01 90 0f 00 c8 <0012> e1_input.c:243 abis_sendmsg: msg->dst == NULL: 0c 12 01 88 12 06 00 00 00 00 00 00 <000d> abis.c:143 Signalling link down <0001> bts.c:293 Shutting down BTS 0, Reason Abis close Shutdown timer expired *3. osmo-nitb* $ sudo osmo-nitb -c osmo-nitb-ipa.cfg <001e> telnet_interface.c:104 Available via telnet 127.0.0.1 4242 <0020> input/ipaccess.c:985 enabling ipaccess BSC mode on 0.0.0.0 with OML 3002 and RSL 3003 TCP ports <0025> control_if.c:911 CTRL at 127.0.0.1 4249 DB: Database initialized. DB: Database prepared. In a word, the hardware USRP TX/RX LED has not been lighted, it seems not work. How to poweron it?

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DGSM merge: need feedback on open questions
by Neels Hofmeyr 01 May '20

01 May '20

Hi all, we need to wrap up the DGSM work and get it to a state that can be merged to master. There are still open issues that I am not sure how to solve, which I've mentioned on some occasions, but it seems to not have been loud enough. I would easily choose one way, but am not sure about others' opinions. (1) One open point is the GSUP peer identification. I've added a comment explaining it in https://gerrit.osmocom.org/c/osmo-hlr/+/16459/9 Me personally, I would strip down basically all of that complexity again and go with the simplest solution, a nul terminated size limited char string for GSUP peer id. The patch became what it is because vague requirements were thrown in the mix and I tried to accomodate them, and now it ended up being a rather ugly shim around a simple char string, really. (2) Another open question is the freeing behavior in osmo_gsup_req (for proper async handling of DGSM, and to ensure proper GSUP responses). I've added a comment explaining that in https://gerrit.osmocom.org/c/osmo-hlr/+/16205/29 The gist for both issues is that I could write patches that would have a large ripple effect throug many files and follow-up patches, but if we again disagree on the outcome, the work would multiply. So, DGSM works and is ready, except that we need to agree on what will be accepted by review. I need opinions to be able to complete this (or possibly a "go" to do whatever I think is right and merge that). Thanks! ~N

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