OpenBSC November 2010

openbsc@lists.osmocom.org

20 participants
37 discussions

DIY BTS
by Barnaby Astles 30 Nov '10

30 Nov '10

Has any one here taken a look at building a BTS? There some interesting Baseband chips available: http://www.octasic.com/en/applications/wireless/gsm_edge.php It would avoid NDAs and maybe we could just get the transmitter. Since we are not looking at building high availability stuff it could cut costs to get more interest in developing the software. P.S. There are transmitters that are being scraped by the telcos due to upgrades. Barnaby J Astles Solutions Saminov inc 166 rue Cowie Suite 201 Granby, QC, Canada J2G 3V3 Cell: (450) 522-7153 Fax: (450) 372-8430

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bs11-daisychain-config&many other problems
by Thomas Ansorg 30 Nov '10

30 Nov '10

hello, built 2 bs11 interconnect cables + termination today. but the second bs11's not recongnised. i tried the 2-2 cfg-file, and mine. i want to use only one trx per bts. my cfg-file look like this: ! ! OpenBSC configuration saved from vty ! ! password foo ! line vty no login ! network network country code 262 mobile network code 10 short name T-Net long name Test-Netz timer t3101 10 timer t3113 60 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 4 sub-slot full oml e1 tei 25 trx 0 arfcn 122 max_power_red 0 rsl e1 line 1 timeslot 4 sub-slot full rsl e1 tei 1 timeslot 0 phys_chan_config CCCH+SDCCH4 e1 line 1 timeslot 5 sub-slot 0 timeslot 1 phys_chan_config SDCCH8 e1 line 1 timeslot 5 sub-slot 1 timeslot 2 phys_chan_config TCH/F e1 line 1 timeslot 5 sub-slot 2 timeslot 3 phys_chan_config TCH/F e1 line 1 timeslot 5 sub-slot 3 timeslot 4 phys_chan_config TCH/F e1 line 1 timeslot 6 sub-slot 0 timeslot 5 phys_chan_config TCH/F e1 line 1 timeslot 6 sub-slot 1 timeslot 6 phys_chan_config TCH/F e1 line 1 timeslot 6 sub-slot 2 timeslot 7 phys_chan_config TCH/F e1 line 1 timeslot 6 sub-slot 3 i modified the 2-2 cfg file in a way that made sense to me. when i connect only the 2nd bs11 to the pc, it isnt recognised as well. firmware is on, an due to people who works there, this bs11 was once operational. did i forget any setup procedures maybe? 2nd problem: bs11_config i tried bs11_config -p /dev/ttyUSB0 as described in the page, but seems this device ttyUSB0 doesnt exist.the lmt cable is connected and telnet localhost 4242 from other console also works. 3rd problem: during bsc_hack running, i get strange messages. my 2 favorites are: gsm04_08.c: 873 location updating reject on channel 0 abis_nm.c:1799 Invalid channel combination!! is there any faq or something else, where these messages are explanined? answers in german preferred. increases enormously the readability on my pc. T. -- Wer Rechtschreibfehler findet, darf sie behalten!

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AW: Optional cell reselection parameters setting
by Andreas.Eversberg 29 Nov '10

29 Nov '10

did you push it? my head of sylvain/testing is: commit cbf5ba125a70bd18c5919d51203d836fd26fa98a [WIP] Voice IND -----Ursprüngliche Nachricht----- Von: openbsc-bounces(a)lists.gnumonks.org [mailto:openbsc-bounces@lists.gnumonks.org] Im Auftrag von Sylvain Munaut Gesendet: Sonntag, 28. November 2010 20:58 An: OpenBSC list Betreff: Optional cell reselection parameters setting Hi, I've just pushed a patch in sylvain/testing with vty commands (and support code) to support settings things such as the Cell Reselection Offset (which is in the re tst octet). If someone could just have a quick look before I put it in master. The main thing is the vty setting to support things like: penalty time <20-620> penalty time infinite I had to create two commands it seems (can specify that an arg is either a range or a keyword if I'm not mistaken). Cheers, Sylvain

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Re: Question about SCCP, TCAP and MAP code
by mosbah abdelkader 29 Nov '10

29 Nov '10

Hello, About introducing myself: I am a network engineer working in the fields of VoIP and Radio Communications services at NEWITEC CONSULTING Tunisia ( www.newtechtn.com). Some of my projects done are: 1- Integration of custom SCTP and M3UA layers into the Dialogic SS7 stack for a french client. 2- Integration of a solution for SIP traversal over firewalls and nats. 3- Collaboration in the development of a GSM IP client (does authentification to a GSM network with the classic method but over IP). This work is a part of a roaming hub solution. 4- VoIP switching, billing and security. If you find my work interesting, please involve me in the development of the project. Thank you.

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Optional cell reselection parameters setting
by Sylvain Munaut 28 Nov '10

28 Nov '10

Hi, I've just pushed a patch in sylvain/testing with vty commands (and support code) to support settings things such as the Cell Reselection Offset (which is in the re tst octet). If someone could just have a quick look before I put it in master. The main thing is the vty setting to support things like: penalty time <20-620> penalty time infinite I had to create two commands it seems (can specify that an arg is either a range or a keyword if I'm not mistaken). Cheers, Sylvain

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nanoBTS and power settings
by Matthew Harper 28 Nov '10

28 Nov '10

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi There, It occured to me the other day that I have been spending many hours sat next to my nanoBTS in a lab environment and have never given thought about the amount of power that the device is outputting. Looking through the bsc_hack config settings I can see the ms max power setting, at present I have this setting set to 15. I am also not sure at which levels to set my nominal power and max_power_red settings. What are everyone's opinions on a safe power setting at which to set the nanoBTS? Is 15 to high or low? What do other people have there power settings set too? Does anyone have any reading material on the wider health implications of using such a device as the nanoBTS in close proximity to a person for long periods of time? Many thanks for the help, advice and suggestions. Matthew -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJM8iKPAAoJEN8GVfF7H7tjC34QAMeNkgzYWVwjteJZUwAsxoGn X75nPN3mVscL9nMoKJrWxz3Dg0wYBfzqenvrfwDfJqK8SmC+vB9dTXy0zCSyoT7F +/it+KHP/S+QhcxQqrnKjpODUl0QmmTNhmEXd9EMRJBcVhPUTUeeLSSPaWIXxUj5 GteAFxhCn8xssC1fEV5dOAeIV7HLnKeP++FMOyikQhdGrAriYWUjF8N0UZ9I1yFc OHcfK0PnPsiNNq3MWfMJBMDnritZ7GVyqwIqZdE3rm59L9DCZuh3vbF1XUaDPsyb bBlr9kwd5RvyW5PEwKj553aD7o3HbPh115pdnD92ls8z75iVpXB7193g3zsiV8o7 uUZuMfXZEC0BIuweB1wMUkJbWNok6NOV3vqr/AFwJF474sgt2W1VIlnagJZFQrnt Fdt5R+bSTMvqGjkkMSWPvaOpOGgd55UyZidQS3lSecPHR7JoRwcKG/1ErG/q2yQF o7Vf9qbGd67gl6YYWYaOhnZsN5YbaGqiNR7O950dSj41OdI0GXv745yuMchIUELo kZPKZY57coSLKnjQYobdUXMgheL08mUlQNogCRJJ9r8FsxyfpdP6GgWA6JsxGkCF 5L5wvBY2dd8bEJPF0tBSBOyN4tPyyUdFfGJLIgMj35cZ/qzauicVE719AED6J5R/ GP0mOHRoez6zMRKidr8G =lxWM -----END PGP SIGNATURE-----

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Question about SCCP, TCAP and MAP code
by mosbah abdelkader 28 Nov '10

28 Nov '10

Hello, Has anyone integrated or tested the integration of the three projects SCCP, TCAP and MAP to build an SS7 stack? What is the advancement of these projets? is it possible to use them in a real network? Any help is very appreciated. Thank you.

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A problem in OpenBSC, sccp.c
by Wenbin Wu 26 Nov '10

26 Nov '10

Hello, I have a problem in sccp.c. 537--543 udt->type = SCCP_MSG_TYPE_UDT; udt->proto_class = class; udt->variable_called = 3; udt->variable_calling = 5 + out->gti_len; if(out->use_poi) udt->variable_calling += 2; udt->variable_data = 7 + out->gti_len + in->gti_len; if(in->use_poi) udt->variable_calling += 2; I add these two 'if' lines in the code. I'm not sure if it is right. In source code, before it calls 'create_sccp_addr', it sets the length only using gti_len. But in 'create_sccp_addr', if I use poi, the length should be add 2. Am I right?

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Re: State of the art ?
by Barnaby Astles 25 Nov '10

25 Nov '10

OK so does anyone have used or knows where to get used BS11 GSM900 hardware ? Barnaby J Astles On Wed, Nov 24, 2010 at 20:04, Seungju Kim <admin(a)manateeshome.com> wrote: > Look for someone in this mailing list. That will be the most doable way I > think > > Sent from my iPhone > > On Nov 24, 2010, at 7:03 PM, Barnaby Astles <bjastles(a)gmail.com> wrote: > > Do you know where there are used ones ? > > Barnaby J Astles > > > On Wed, Nov 24, 2010 at 14:00, Seungju Kim < <admin(a)manateeshome.com> > admin(a)manateeshome.com> wrote: > >> looking for an used one or contacting manufacturer and ordering a new one >> >> Sent from my iPhone >> >> On Nov 24, 2010, at 12:48 PM, Barnaby Astles < <bjastles(a)gmail.com> >> bjastles(a)gmail.com> wrote: >> >> Hello, >> >> This is a test to see if I can make it to the mail list. >> >> And a little question: If one wants to get involved in development, how >> does one get a hold of some hardware? >> >> Barnaby J Astles >> Solutions Saminov inc >> >> 166 rue Cowie >> Suite 201 >> Granby, QC, Canada >> J2G 3V3 >> >> Cell: (450) 522-7153 >> Fax: (450) 372-8430 >> >> >

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Re: State of the art ?
by Barnaby Astles 25 Nov '10

25 Nov '10

Do you know where there are used ones ? Barnaby J Astles On Wed, Nov 24, 2010 at 14:00, Seungju Kim <admin(a)manateeshome.com> wrote: > looking for an used one or contacting manufacturer and ordering a new one > > Sent from my iPhone > > On Nov 24, 2010, at 12:48 PM, Barnaby Astles <bjastles(a)gmail.com> wrote: > > Hello, > > This is a test to see if I can make it to the mail list. > > And a little question: If one wants to get involved in development, how > does one get a hold of some hardware? > > Barnaby J Astles > Solutions Saminov inc > > 166 rue Cowie > Suite 201 > Granby, QC, Canada > J2G 3V3 > > Cell: (450) 522-7153 > Fax: (450) 372-8430 > >

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OpenBSC November 2010