Testing Openbsc without a BTS

Hi everyone, I am trying to test Openbsc without a BTS. I need your help as I am very new to Openbsc. After doing the configurations for openbsc-multitrx.cfg file this is how I started the process: cd openbsc/openbsc src/osmo-nitb -c doc/examples/osmo-nitb/nanobts/openbsc-multitrx.cfg -C And the output I received was: <0019> input/ipaccess.c:925 enabling ipaccess BSC mode DB: Database initialized. DB: Database prepared. <0001d> sms_queue.c:220 Attempting to send 20 SMS After this I added a subscriber in the hlr and the subscriber was added in the output:  <0019> ipaccess.c:841 enabling ipaccess BSC mode DB: Database initialized. DB: Database prepared. <001d> sms_queue.c:232 Attempting to send 20 SMS <0002> gsm_subsciber.c:390 Expiring inactive subscriber Testing(ID 1) After this I used the following commands on the osmo-nitb console and receive the following output: Openbsc>show subscrber id 1             ID:  1,    Authorized:  1             Name:    'Testing'             Extension:    9999999999             LAC:    0/0x0             IMSI:    404012345678903            TMSI:    0012D681             Pending:    0             Usecount:    1 Openbsc> subscriber id 1 send sms Hello Openbsc> subscriber id 1 silent call start any %subscriber not attached Am I doing the right thing, are there some more configurations that I am required to do and is this the only output that can be achieved without a BTS? Also the lac is being displayed as 0/0x0, is this how it should have been? Please let me know, I really need help on this. Thanks and regards Priyanka