OpenBSC

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4278 discussions

Any one who can help me ,can't find a branch or tag which may compile success.!! thank u.
by 韩明君 27 Nov '16

27 Nov '16

hello everyone ,first thanks for yours look at this email ... i work under ubuntu 14.04 and with the doc of http://osmocom.org/projects/openbsc/wiki/Building_OpenBSC now i only can do make install and success with git version of on-waves/0.3 （openbsc） and success found the executable file drwxr-xr-x 2 root root 4096 11月 27 15:42 ./ drwxr-xr-x 11 root root 4096 11月 13 21:46 ../ -rwxr-xr-x 1 root root 551571 11月 27 15:42 bs11_config* -rwxr-xr-x 1 root root 1877782 11月 27 15:42 bsc_hack* -rwxr-xr-x 1 root root 528464 11月 27 15:42 bsc_mgcp* -rwxr-xr-x 1 root root 1547559 11月 27 15:42 bsc_msc_ip* -rwxr-xr-x 1 root root 967960 11月 27 15:42 bsc_nat* -rwxr-xr-x 1 root root 1359089 11月 27 15:42 ipaccess-config* -rwxr-xr-x 1 root root 37451 11月 27 15:42 ipaccess-find* -rwxr-xr-x 1 root root 25066 11月 27 15:42 isdnsync* but as the README under openbsc this version don't work well with ip based BTS

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question on USSD messages
by Neels Hofmeyr 27 Nov '16

27 Nov '16

Hi all, I'm looking at USSD message generation in openbsc, and would like to move a bit of msg generation to libosmocore. However, in libosmocore's gsm0480.c I already find an implementation that seems to do the same, yet with some differences I'm not sure how to deal with. The function originally in openbsc: gsm0480_send_releaseComplete() On the iu branch, I've moved the msg generation to gsm0480_gen_releaseComplete() This should rather go to libosmocore. There I already find gsm0480_create_ussd_resp() The openbsc variants are rather shorter. Is it incomplete/incorrect?? Is the libosmocore gsm0480_create_ussd_resp() just bloat for this case?? For convenience, let me paste the code: openbsc's Release Complete, very lean: struct msgb *gsm0480_gen_releaseComplete(void) { struct msgb *msg; msg = gsm48_msgb_alloc_name("GSM 04.08 USSD REL COMPL"); if (!msg) return NULL; gsm0480_l3hdr_push(msg, GSM48_PDISC_NC_SS, GSM0480_MTYPE_RELEASE_COMPLETE); return msg; } Note that the above does not set a direction flag nor trans_id in the proto_discr, like libosmocore's gsm0480_create_ussd_resp() does; neither do I understand the purpose of all the constant "code/id" TLs and wrapping: struct msgb *gsm0480_create_ussd_resp(uint8_t invoke_id, uint8_t trans_id, const char *text) { struct msgb *msg; uint8_t *ptr8; int response_len; msg = msgb_alloc_headroom(1024, 128, "GSM 04.80"); if (!msg) return NULL; /* First put the payload text into the message */ ptr8 = msgb_put(msg, 0); gsm_7bit_encode_n_ussd(ptr8, msgb_tailroom(msg), text, &response_len); msgb_put(msg, response_len); /* Then wrap it as an Octet String */ msgb_wrap_with_TL(msg, ASN1_OCTET_STRING_TAG); /* Pre-pend the DCS octet string */ msgb_push_TLV1(msg, ASN1_OCTET_STRING_TAG, 0x0F); /* Then wrap these as a Sequence */ msgb_wrap_with_TL(msg, GSM_0480_SEQUENCE_TAG); /* Pre-pend the operation code */ msgb_push_TLV1(msg, GSM0480_OPERATION_CODE, GSM0480_OP_CODE_PROCESS_USS_REQ); /* Wrap the operation code and IA5 string as a sequence */ msgb_wrap_with_TL(msg, GSM_0480_SEQUENCE_TAG); /* Pre-pend the invoke ID */ msgb_push_TLV1(msg, GSM0480_COMPIDTAG_INVOKE_ID, invoke_id); /* Wrap this up as a Return Result component */ msgb_wrap_with_TL(msg, GSM0480_CTYPE_RETURN_RESULT); /* Wrap the component in a Facility message */ msgb_wrap_with_TL(msg, GSM0480_IE_FACILITY); /* And finally pre-pend the L3 header */ gsm0480_l3hdr_push(msg, GSM48_PDISC_NC_SS | trans_id | (1<<7) /* TI direction = 1 */, GSM0480_MTYPE_RELEASE_COMPLETE); return msg; } Thanks for any insights! ~N -- - 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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Re: New Defects reported by Coverity Scan for Osmocom
by Neels Hofmeyr 26 Nov '16

26 Nov '16

On Thu, Nov 24, 2016 at 12:01:08PM -0800, scan-admin(a)coverity.com wrote: > ________________________________________________________________________________________________________ > *** CID 149097: Null pointer dereferences (FORWARD_NULL) > /source-Osmocom/openbsc/openbsc/src/gprs/gprs_sndcp_comp.c: 67 in gprs_sndcp_comp_create() > 61 comp_field->rfc2507_params->nsapi, > 62 sizeof(comp_entity->nsapi)); > 63 } else if (comp_field->rohc_params) { > 64 comp_entity->nsapi_len = comp_field->rohc_params->nsapi_len; > 65 memcpy(comp_entity->nsapi, comp_field->rohc_params->nsapi, > 66 sizeof(comp_entity->nsapi)); > >>> CID 149097: Null pointer dereferences (FORWARD_NULL) > >>> Comparing "comp_field->v42bis_params" to null implies that "comp_field->v42bis_params" might be null. The point of this complaint: - gprs_sndcp_comp.c:67 implies that v42bis_params might be NULL - on line 104 we call gprs_sndcp_dcomp_init() - then this function (gprs_sndcp_dcomp.c near 88) dereferences comp_field->v42bis_params without checking for NULL (instead relies on comp_entity->algo == V42BIS) I think I'd add an OSMO_ASSERT(comp_field->v42bis_params) in gprs_sndcp_dcomp_init(). pmaier? ~N

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Nokia crash during init is fixed
by Sipos Csaba 25 Nov '16

25 Nov '16

Dear Harald, Just wanted to confirm that a long outstanding crash is now fixed by your patch: http://cgit.osmocom.org/libosmocore/commit/?id=f92e44c5399d8914aad58bd2c740… After applying it, the nasty hack I used is not needed anymore, and the BTS-es are coming up just fine, all services are working correctly. Will update the Nokia Site specific part of the wiki with this new information. Thanks! Csaba

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Osmo-trx Git Access and New Branch Request
by z.tamosevicius＠limemicro.com 24 Nov '16

24 Nov '16

Hello, My name is Zydrunas Tamosevicius. I work for Lime on Myriad-RF and would like to ask to have a new "myriadrf" branch set up and access in osmo-trx git repository. We want to be able to work on adding support for Myriad-RF hardware. The intention is to have these changes merged into master after we get it working on our branch. Is there any guidelines we have to follow? Thank you in advance! -- Best regards, Zydrunas Tamosevicius Senior IC Design Engineer (Digital) Lime Microsystems z.tamosevicius(a)limemicro.com

2 1

MGCP support
by Kristian Martens 24 Nov '16

24 Nov '16

All, Does there exist a document describing to which port the callagent (MSC) has to connect to, how and where the CIC to RTP IP/port mapping table is defined etc? Regards, Kristian -- *Kristian Martens* Software Engineer Mobile: +49 160 1024262 Office: +49 30 65218529 / ng4T GmbH Siemensdamm 50 13629 Berlin Germany www.ng4t.com <http://www.ng4t.com> / Berlin-Charlottenburg, HRB 123546 Geschäftsführer Dr. Andreas Kallmann

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Roadmap for OpenBSC
by Kristian Martens 24 Nov '16

24 Nov '16

All, I have seen that it is planned to implement the full AoIP stack for a standalone OpenBSC. Do have any idea by when this feature could be ready to use? Best regards, Kris

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Unable to find Ki value using Pysim Error -Reg
by Rajasekar R 24 Nov '16

24 Nov '16

Dear Team, I am trying to find out KI Value of Anristu MT8820C Test SIm Card using Pysim Software. I am using Identiv uTrust 2900 R Smart Card Reader and Identiv SCR35xx USB Smart Card Reader. When I put *./pySim-read.py -p 0 *in the terminal it shows the following error *.* Please help me to proceed further. [image: Inline image 1] Thanks and Regards.... Rajasekar

2 1

B210 - 2 chain Configuration issue
by Dhananjay kumar 21 Nov '16

21 Nov '16

Hi, We are configuring B210 with OSMO-NITB ,OSMO-BTS and OSMO-TRX for 2 chain configuartion. BSC Configuation : bts 0 trx 0 rf_locked 0 arfcn 51 nominal power 0 max_power_red 0 rsl e1 tei 0 timeslot 0 phys_chan_config CCCH+SDCCH4 hopping enabled 0 timeslot 1 phys_chan_config PDCH timeslot 2 phys_chan_config PDCH timeslot 3 phys_chan_config PDCH timeslot 4 phys_chan_config PDCH timeslot 5 phys_chan_config PDCH timeslot 6 phys_chan_config TCH/F timeslot 7 phys_chan_config TCH/F trx 1 rf_locked 0 arfcn 55 nominal power 0 max_power_red 0 rsl e1 tei 0 timeslot 0 phys_chan_config CCCH+SDCCH4 timeslot 1 phys_chan_config PDCH timeslot 2 phys_chan_config PDCH timeslot 3 phys_chan_config PDCH timeslot 4 phys_chan_config PDCH timeslot 5 phys_chan_config PDCH timeslot 6 phys_chan_config TCH/F timeslot 7 phys_chan_config TCH/F BTS config : trx 0 phy 0 instance 0 trx 1 phy 0 instance 1 *Issue description :* On TRX 0 all 8 eight brust is seen on simulator , but on TRX1 only 1 brust is coming up. when channel is swiped with " - s" [osmo-trx -fc 2 -s ] issue reversed to TRX0. Please refer attached screen shot for frame brust. we need to both TRX working with identical power level. let me know if anyone has faced this issue and have solution for this. BR Dhananjay

1 0

Dynamic TCH/F_PDCH does not work for CS call
by Mrinal Mishra 16 Nov '16

16 Nov '16

Hello All, We are testing Dynamic TCH allocation. In the latest BSC ( commit version 87ef68eb33d463d8aad1511a272cbdb779f1ba19) it is observed that CS call is not working with TCH/F_PDCH channel configuration. Please note that if PS call is attempted in TCH/F_PDCH channel then it works fine. When Dynamic TCH tested with the old BSC commit version (7bc6986f6babdaf5f2436dae2f603ae5823aa7b4) then CS call worked fine with TCH/F_PDCH channel. Please let us know if it is known issue. Thanks and Regards, Mrinal

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