OsmoNITB » History » Revision 3
Revision 2 (zecke, 02/19/2016 10:48 PM) → Revision 3/22 (laforge, 02/19/2016 10:48 PM)
= BSC Hack = ''bsc_hack'' is the program executable name of [wiki:OpenBSC]. We call it that way, since it is still pretty much a big hack, despite having gone a long way in quite a short amount of time. == Configuration == Currently, there is no configuration file. A lot of the configuration is thus compiled-in. Almost all of the values that you might want to tweak are inside the bsc_hack.c file itself, where you can find things like the BCCH filling (SYSTEM INFORMATION) messages and the like. == Reference == === BS-11 === Basically, there are currently just two modes of operation supported {{{ $ ./bsc_hack -t bs11 }}} will assume you have a [wiki:BS11 BS-11] connected to the first mISDN E1 card and have configured * OML signalling on the full 64kbps E1 timeslot 1 * verify this by [wiki:bs11_config] ''query'' * make sure you pass '''dslot=1''' when loading hfcmulti.ko * OML TEI 25 * verify this by [wiki:bs11_config] ''query'' you will see something like {{{ DB: Database initialized. DB: Database prepared. 1 device found id: 0 Dprotocols: 00000018 Bprotocols: 0000000e protocol: 4 nrbchan: 30 name: hfc-e1.1 activate bchan bootstrapping OML Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1376 Set Chan Attr (bts=0,trx=0,ts=0) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1376 Set Chan Attr (bts=0,trx=0,ts=1) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1315 CONNECT TERR TRAF Um=(0,0,1) E1=(0,2,1) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1376 Set Chan Attr (bts=0,trx=0,ts=2) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1315 CONNECT TERR TRAF Um=(0,0,2) E1=(0,2,2) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1376 Set Chan Attr (bts=0,trx=0,ts=3) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1315 CONNECT TERR TRAF Um=(0,0,3) E1=(0,2,3) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1376 Set Chan Attr (bts=0,trx=0,ts=4) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1315 CONNECT TERR TRAF Um=(0,0,4) E1=(0,3,0) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1376 Set Chan Attr (bts=0,trx=0,ts=5) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1315 CONNECT TERR TRAF Um=(0,0,5) E1=(0,3,1) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1376 Set Chan Attr (bts=0,trx=0,ts=6) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1315 CONNECT TERR TRAF Um=(0,0,6) E1=(0,3,2) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1376 Set Chan Attr (bts=0,trx=0,ts=7) Thu Feb 19 04:22:48 2009 <0020> abis_nm.c:1315 CONNECT TERR TRAF Um=(0,0,7) E1=(0,3,3) bootstrapping RSL MCC=1 MNC=1 }}} === ip.access nanoBTS === {{{ $ ./bsc_hack -t nanogsm900 }}} will assume you have a [wiki:nanoBTS] configured with its primary OML link to the IP address of your Linux PC. After starting bsc_hack will just wait for your nanoBTS to connect, which can take quite a while. NOTE: Due to some problems with OML initialization after the first boot of a nanoBTS, you may have to re-start bsc_hack a number of times until you get it working. == Dealing with the HLR == We do have a sqlite3 database for the HLR. We do have a table for Subscribers and to authorize your mobile station you will need to execute. This means LOCATION UPDATING REQUEST will be accepted. {{{ sqlite3 hlr.sqlite update Subscriber set authorized=1 where imsi=YOUR_IMSI; }}} === Using the telnet interface == You can telnet to port 4242 of the machine that runs bsc_hack and try some of the commands. We are planning a lot of work in this area, so documenting the old commands will not be very productive.
