OpenBSC March 2011

openbsc@lists.osmocom.org

20 participants
57 discussions

[PATCH 0/2] split libosmocore library (to create libosmo-gsm)
by Pablo Neira Ayuso 19 Mar '11

19 Mar '11

Hi! The following patches split libosmocore in two libraries, the new libosmo-gsm, which contains GSM-specific functions, and libosmocore, which contains generic functions (like talloc, msgb, select, logging, ...). In case that you're OK with them, you have to apply them in the following way: 1) First, make a copy of libosmocore.git to libosmo-gsm.git. This is done to avoid losing the history in the new libosmo-gsm.git library. $ cp -r libosmocore.git libosmo-gsm.git 2) Apply the patch that removes the GSM-specific features to libosmocore.git (see [PATCH 1/2]) 2) Apply the patch that removes the non-GSM features to libosmo-gsm.git (see [PATCH 2/2]) After these patches, I'll send two patches for openbsc and osmocore-bb to make them use the new libosmo-gsm. Let me know what you think with this proposal.

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whats up with my multidrop?
by kobayashi_maru＠onlinehome.de 19 Mar '11

19 Mar '11

hello list please the the entire mail thoroughly before answering. it's a neverending story with the bs-11 f***ing multidrop: i have bts0 that works perfect as single, and so does bts1, but only bts0 is bootstrapped lets start from the beginning: misdn is configured port 0 has ts1 as d-channel and 2-15 as b-channels, port 1 has ts17 as d-channel and 18-31 as b-channels. that says bs11_config for bts0, that is connected to pc: SITE MANAGER ATTRIBUTES: E1 Channel: Port=0 Timeslot=1 (Full Slot) TEI: 25 BS11 Line Interface ATTRIBUTES: PLL Mode: Standalone BS11 CCLK ATTRIBUTES: CCLK Accuracy: High (1) CCLK Type=0 BS11 Power Amplifier 0 ATTRIBUTES: TRX Power: 30mW (GSM) BPORT0 ATTRIBUTES: Line Configuration: Multi-Drop (1) BPORT1 ATTRIBUTES: Line Configuration: Multi-Drop (1) and that is bts1: SITE MANAGER ATTRIBUTES: E1 Channel: Port=1 Timeslot=17 (Full Slot) TEI: 26 BS11 Line Interface ATTRIBUTES: PLL Mode: Standalone BS11 CCLK ATTRIBUTES: CCLK Accuracy: High (1) CCLK Type=0 BS11 Power Amplifier 0 ATTRIBUTES: TRX Power: 30mW (GSM) BPORT0 ATTRIBUTES: Line Configuration: Star (0) BPORT1 GET ATTR NACK LMT LOGOFF: ACK as you can see, the d-channels match with the bts-setting. each bs-11 have a working trx0 and a high clock accuracy. here we go with cfg: ! ! OpenBSC configuration saved from vty ! ! password foo ! line vty no login ! network network country code 262 mobile network code 10 short name Y-Phone long name Yodaphone handover 1 bts 0 type bs11 band GSM900 cell_identity 1 location_area_code 1 training_sequence_code 7 base_station_id_code 63 oml e1 line 0 timeslot 1 sub-slot full oml e1 tei 25 trx 0 arfcn 121 max_power_red 0 rsl e1 line 0 timeslot 1 sub-slot full rsl e1 tei 1 timeslot 0 phys_chan_config CCCH+SDCCH4 e1 line 0 timeslot 1 sub-slot full timeslot 1 phys_chan_config TCH/F e1 line 0 timeslot 2 sub-slot 1 timeslot 2 phys_chan_config TCH/F e1 line 0 timeslot 2 sub-slot 2 timeslot 3 phys_chan_config TCH/F e1 line 0 timeslot 2 sub-slot 3 timeslot 4 phys_chan_config TCH/F e1 line 0 timeslot 3 sub-slot 0 timeslot 5 phys_chan_config TCH/F e1 line 0 timeslot 3 sub-slot 1 timeslot 6 phys_chan_config TCH/F e1 line 0 timeslot 3 sub-slot 2 timeslot 7 phys_chan_config TCH/F e1 line 0 timeslot 3 sub-slot 3 bts 1 type bs11 band GSM900 location_area_code 2 training_sequence_code 7 base_station_id_code 63 oml e1 line 1 timeslot 17 sub-slot full oml e1 tei 26 trx 0 arfcn 1 max_power_red 0 rsl e1 line 1 timeslot 17 sub-slot full rsl e1 tei 2 timeslot 0 phys_chan_config CCCH+SDCCH4 e1 line 1 timeslot 17 sub-slot full timeslot 1 phys_chan_config SDCCH8 e1 line 1 timeslot 18 sub-slot 1 timeslot 2 phys_chan_config TCH/F e1 line 1 timeslot 18 sub-slot 2 timeslot 3 phys_chan_config TCH/F e1 line 1 timeslot 18 sub-slot 3 timeslot 4 phys_chan_config TCH/F e1 line 1 timeslot 19 sub-slot 0 timeslot 5 phys_chan_config TCH/F e1 line 1 timeslot 19 sub-slot 1 timeslot 6 phys_chan_config TCH/F e1 line 1 timeslot 19 sub-slot 2 timeslot 7 phys_chan_config TCH/F e1 line 1 timeslot 19 sub-slot 3 both bs-11 works as single with the corresponding section (bts 0 or 1) of the cfg file. i have differents teis for all lapd connection. i use cat4 cable for the bs-11 connection (10 m between the bs-11s) maybe the screenshot attached unveils the problem. any help/hint is very welcome. T.

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Re: [PATCH 1/2] libosmocore: remove GSM-specific functions (they now belong to libosmo-gsm)
by Sylvain Munaut 18 Mar '11

18 Mar '11

Hi, > I forgot to say that VTY code still remains in libosmocore, I'll study > if it can be interesting in a new library (I can do this later, once > this patches are applied, of course). gsmtap is a misnomer, but we now use it for TETRA as well ... crc16 possibly common as well (altough not sure). In general, if we have functions that are common to several protocols but are not really 'system' stuff like select/timer or stuff like that, where should we put them ? Keep them in libosmocore ? (like a include/osmocom/utils or also in 'core' ?) Also, for future enhancement (future patches, just mentioning it here since it's kinda related to the whole library cleanup), Harald mentionned to replace the include/osmocore by include/osmocom/core (like it was done for vty / code / ...) Cheers, Sylvain

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AW: Connecting more OpenBSC together
by Andreas.Eversberg 18 Mar '11

18 Mar '11

> I know the tutorial. I made some corrections, too... :D > Unfortunately, I couldn't get my Ubuntu Hardy working with mISDN loop > without any ISDN card... you should load mISDN like this: modprobe mISDN_core modprobe mISDN_dsp modprobe mISDN_l1loop pri=1 misdn_info Found 2 ports Port 0 'mISDN_l1loop.1': TE/NT-mode PRI E1 (for phone lines & E1 devices) 2 B-channels: 1-2 B-protocols: RAW HDLC X75slp L2:DSP L2:DSPHDLC -------- Port 1 'mISDN_l1loop.2': TE/NT-mode PRI E1 (for phone lines & E1 devices) 2 B-channels: 1-2 B-protocols: RAW HDLC X75slp L2:DSP L2:DSPHDLC if you use the latest lcr and openbsc git, you should have two processes that communicate via socket interface, rather than compiling them together.

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[PATCH] osmocom-bb: build: use new libosmo-gsm library
by Pablo Neira Ayuso 17 Mar '11

17 Mar '11

This patch requires the appropriate git-subtree magic to include the new proposed libosmo-gsm into osmocom-bb (as it happens with libosmocore).

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[PATCH] openbsc: build: add new library dependency libosmo-gsm
by Pablo Neira Ayuso 17 Mar '11

17 Mar '11

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Re: Connecting more OpenBSC together
by Chris Rankine 17 Mar '11

17 Mar '11

With a nanoBTS, you don't need a real ISDN card. You can use mISDN modules which are typically compiled in as modules in Linux. My lab has a few 900 and 1800 nanoBTS units, all running over Ethernet/IP, with openBSC, Asterisk, and LCR running on VMs with no ISDN cards, no special hardware. There is a tutorial on how to set this up here, http://openbsc.osmocom.org/trac/wiki/OpenBSC_LCR . I also found a mailing list post that fills in some blanks, http://www.mail-archive.com/openbsc@lists.gnumonks.org/msg00352.html . I would suggest trying to follow the mailing list post to the letter to set this up, and once it is working make a snapshot then try to update the source of the packages installed. Chris Rankine 2011/3/17 Luca Bertoncello <bertoncello(a)netzing.de>: > Am Thu, 17 Mar 2011 11:10:17 -0400 > schrieb Chris Rankine <cr3(a)cr3.us>: > >> Which BTS are you using? > > nanoBTS from ip.access. > > Greetings > -- > _______________________________________________________________________ > Luca Bertoncello > Entwicklung Mail: bertoncello(a)netzing.de > > > NETZING Solutions AG Tel.: 0351/41381 - 23 > Fröbelstr. 57, 01159 Dresden Fax: 0351/41381 - 12 > _______________________________________________________________________ > > Impressum: > NETZING Solutions AG - Fröbelstraße 57 - 01159 Dresden > Sitz der Gesellschaft Amtsgericht Dresden HRB 18926 > Vorstand Dieter Schneider - Aufsichtsratsvorsitzender Volker Kanitz > USt.Id DE211326547 Mail: netzing.ag(a)netzing.de >

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AW: Connecting more OpenBSC together
by Andreas.Eversberg 17 Mar '11

17 Mar '11

> I have more OpenBSC running on different IPs and using different > configurations, and I need to connect them together, so that it is > possible to have, for example, two mobile phones connected to two > different OpenBSCs and able to make calls with each other. you can run openbsc with lcr at each location. two lcrs can be connected with E1 link. this link must not be physical, mISDN provides a l1oip driver (E1 or S/T over IP). andreas

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Connecting more OpenBSC together
by Luca Bertoncello 17 Mar '11

17 Mar '11

Hi, list! I have more OpenBSC running on different IPs and using different configurations, and I need to connect them together, so that it is possible to have, for example, two mobile phones connected to two different OpenBSCs and able to make calls with each other. Is it possible? Can you suggest me an HowTo? Thanks a lot! -- _______________________________________________________________________ Luca Bertoncello Entwicklung Mail: bertoncello(a)netzing.de NETZING Solutions AG Tel.: 0351/41381 - 23 Fröbelstr. 57, 01159 Dresden Fax: 0351/41381 - 12 _______________________________________________________________________ Impressum: NETZING Solutions AG - Fröbelstraße 57 - 01159 Dresden Sitz der Gesellschaft Amtsgericht Dresden HRB 18926 Vorstand Dieter Schneider - Aufsichtsratsvorsitzender Volker Kanitz USt.Id DE211326547 Mail: netzing.ag(a)netzing.de

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oml and RSL - 2nd try
by Thomas Ansorg 17 Mar '11

17 Mar '11

hello ok, lets try it again: do the oml and rsl settings have to be identical? for example: one bts is set to port 0, ts 1, tei 25. the cfg entry would be "oml e1 line 0 timeslot 1 sub-slot full" and "rsl e1 line 0 timeslot 1 sub-slot full", right? the cited link is useless, i kno it already, doesnt answer my question. what i wanted to know is why we have 2 types of settings (oml and rsl) which are identical, cause that told the openbsc.cfg. why do we need 2 settings that configure the same? or was the assumption above wrong? T. -- Wer Rechtschreibfehler findet, darf sie behalten!

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OpenBSC March 2011