IP Access nanobts dropping OML link to OpenBSC

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Dingani Brian Nkala brian at movirtu.com
Mon Oct 15 07:47:46 UTC 2012 

Hi All,

I'm very new to OpenBSC and nanoBTS (but have quite a bit of experience in
telecoms in general). I recently acquired a brand new ip.access nanoBTS
(nanoGSM) for a project I'm working on and I promptly installed OpenBSC on
Ubuntu 11.04 successfully without any headaches. So far I've managed to do
an "ipaccess-find" and found the BTS, and also set the Unit ID of the
nanoBTS + OML address using the "ipaccess-config" utility. My problem is,
when I startup osmo-nitb, I can see the BTS trying to connect and then it
sends a NACK and OpenBSC drops the links. Below is the output I get on the
screen when I startup osmo-nitb:

/home/beta/libosmocore/openbsc/openbsc/src/osmo-nitb# ./osmo-nitb
-debug=DRLL:DCC:DMM:DRR:DRSL:DNM:DSMS:DMNSMS:DDB:DMEAS -c openbsc.cfg
DB: Database initialized.
DB: Database prepared.
<0007> sms_queue.c:232 Attempting to send 20 SMS
<0007> sms_queue.c:292 SMSqueue added 0 messages in 0 rounds
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=BTS(01) INST=(00,ff,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) STATE
CHG: OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,00) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,01) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,02) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,03) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,04) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,05) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,06) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,07) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=RADIO-CARRIER(02) INST=(00,00,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=GPRS-NSE(f0) INST=(00,ff,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=GPRS-CELL(f1) INST=(00,00,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=GPRS-NSVC(f2) INST=(00,00,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=GPRS-NSVC(f2) INST=(00,01,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) SW Activate
Request: <0005> abis_nm.c:418 Software Activate Request, ACKing and
Activating
<0005> abis_nm.c:439 Found SW config: 42 12 00 08 31 31 39 61 30 30 32
00 13 00 0a 76 31 32 37 62 31 34 64 30 00
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) Software
Activated Report
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Off line(03)
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) Sending OPSTART
<0005> abis_nm.c:419 OC=BTS(01) INST=(00,ff,ff) SW Activate Request:
<0005> abis_nm.c:418 Software Activate Request, ACKing and Activating
<0005> abis_nm.c:439 Found SW config: 42 12 00 08 31 31 39 61 30 30 32
00 13 00 0a 76 31 32 37 62 31 34 64 30 00
<0005> abis_nm.c:419 OC=GPRS-NSE(f0) INST=(00,ff,ff) SW Activate
Request: <0005> abis_nm.c:418 Software Activate Request, ACKing and
Activating
<0005> abis_nm.c:439 Found SW config: 42 12 00 08 31 31 39 61 30 30 32
00 13 00 0a 76 31 32 37 62 31 34 64 30 00
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) STATE CHG:
OP_STATE=Enabled
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) Sending OPSTART
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) OPSTART NACK
CAUSE=Message cannot be performed
<0005> bsc_init.c:54 Got a NACK going to drop the OML links.
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=BTS(01) INST=(00,ff,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) STATE
CHG: OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,00) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,01) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,02) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,03) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,04) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,05) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,06) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=CHANNEL(03) INST=(00,00,07) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=RADIO-CARRIER(02) INST=(00,00,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=GPRS-NSE(f0) INST=(00,ff,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=GPRS-CELL(f1) INST=(00,00,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=GPRS-NSVC(f2) INST=(00,00,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=GPRS-NSVC(f2) INST=(00,01,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Not installed(07)
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) SW Activate
Request: <0005> abis_nm.c:418 Software Activate Request, ACKing and
Activating
<0005> abis_nm.c:439 Found SW config: 42 12 00 08 31 31 39 61 30 30 32
00 13 00 0a 76 31 32 37 62 31 34 64 30 00
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) Software
Activated Report
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) STATE CHG:
OP_STATE=Disabled AVAIL=Off line(03)
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) Sending OPSTART
<0005> abis_nm.c:419 OC=BTS(01) INST=(00,ff,ff) SW Activate Request:
<0005> abis_nm.c:418 Software Activate Request, ACKing and Activating
<0005> abis_nm.c:439 Found SW config: 42 12 00 08 31 31 39 61 30 30 32
00 13 00 0a 76 31 32 37 62 31 34 64 30 00
<0005> abis_nm.c:419 OC=GPRS-NSE(f0) INST=(00,ff,ff) SW Activate
Request: <0005> abis_nm.c:418 Software Activate Request, ACKing and
Activating
<0005> abis_nm.c:439 Found SW config: 42 12 00 08 31 31 39 61 30 30 32
00 13 00 0a 76 31 32 37 62 31 34 64 30 00
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) STATE CHG:
OP_STATE=Enabled
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) Sending OPSTART
<0005> abis_nm.c:419 OC=SITE-MANAGER(00) INST=(ff,ff,ff) OPSTART NACK
CAUSE=Message cannot be performed
<0005> bsc_init.c:54 Got a NACK going to drop the OML links.


And the config file:

cat openbsc.cfg
!
! OpenBSC configuration saved from vty
!   !
password foo
!
line vty
 no login
!
e1_input
 e1_line 0 driver ipa
network
 network country code 1
 mobile network code 1
 short name OpenBSC
 long name OpenBSC
 auth policy closed
 location updating reject cause 13
 encryption a5 0
 neci 1
 rrlp mode none
 mm info 1
 handover 0
 handover window rxlev averaging 10
 handover window rxqual averaging 1
 handover window rxlev neighbor averaging 10
 handover power budget interval 6
 handover power budget hysteresis 3
 handover maximum distance 9999
 timer t3101 10
 timer t3103 0
 timer t3105 0
 timer t3107 0
 timer t3109 0
 timer t3111 0
 timer t3113 60
 timer t3115 0
 timer t3117 0
 timer t3119 0
 timer t3141 0
 bts 0
  type nanobts
  band DCS1800
  cell_identity 0
  location_area_code 1
  training_sequence_code 7
  base_station_id_code 63
  ms max power 15
  cell reselection hysteresis 4
  rxlev access min 0
  channel allocator ascending
  rach tx integer 9
  rach max transmission 7
  ip.access unit_id 1801 0
  oml ip.access stream_id 255 line 0
  gprs mode none
  trx 0
   rf_locked 0
   arfcn 514
   nominal power 23
   max_power_red 20
   rsl e1 tei 0
    timeslot 0
     phys_chan_config CCCH+SDCCH4
    timeslot 1
     phys_chan_config SDCCH8
    timeslot 2
     phys_chan_config TCH/F
    timeslot 3
     phys_chan_config TCH/F
    timeslot 4
     phys_chan_config TCH/F
    timeslot 5
     phys_chan_config TCH/F
    timeslot 6
     phys_chan_config TCH/F
    timeslot 7
     phys_chan_config TCH/F


Thanks in advance.

-- 
Dee

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