Hi all, I am facing an error while trying to make a call from vty here is my mobile.cfg output ! ! OsmocomBB () configuration saved from vty !! ! line vty no login ! gps device /dev/ttyACM0 gps baudrate default gps enable ! no hide-default ! ms 1 layer2-socket /tmp/osmocom_l2 sap-socket /tmp/osmocom_sap sim reader network-selection-mode auto imei 415239521974659 0 imei-random 15 no emergency-imsi no sms-service-center no call-waiting no auto-answer no force-rekey clip no clir tx-power auto no simulated-delay no stick location-updating neighbour-measurement codec full-speed prefer codec half-speed no abbrev support sms a5/1 a5/2 p-gsm e-gsm r-gsm no gsm-850 dcs no pcs class-900 4 class-850 4 class-dcs 1 class-pcs 1 channel-capability sdcch+tchf+tchh full-speech-v1 full-speech-v2 half-speech-v1 min-rxlev -100 dsc-max 90 no skip-max-per-band exit test-sim imsi 001010000000000 ki xor 00 00 00 00 00 00 00 00 00 00 00 00 no barred-access no rplmn hplmn-search foreign-country exit no shutdown exit ! the debbuging output is <0009> mnccms.c:570 Make call to 123456789 <0009> mnccms.c:150 support TCH/H also <0009> mnccms.c:174 support full rate v2 <0009> mnccms.c:178 support full rate v1 <0009> mnccms.c:187 support half rate v1 <0006> transaction.c:76 ms 1 allocates transaction (proto 3 trans_id 255 callref 1 mem 0xf408d0) <0006> gsm48_cc.c:243 new state NULL -> MM_CONNECTION_PEND <0006> gsm48_cc.c:507 Sending MMCC_EST_REQ <0005> gsm48_mm.c:3783 (ms 1) Received 'MMCC_EST_REQ' event in state MM idle <0005> gsm48_mm.c:3786 -> substate PLMN search <0005> gsm48_mm.c:3788 -> callref 1, transaction_id 255 <0005> gsm48_mm.c:3051 Init MM Connection, not in normal state. <0006> gsm48_cc.c:2161 (ms 1) Received 'MMCC_REL_IND' in CC state MM_CONNECTION_PEND <0006> gsm48_cc.c:196 (ms 1 ti ff) Sending 'MNCC_REL_IND' to MNCC. <0006> gsm48_cc.c:243 new state MM_CONNECTION_PEND -> NULL <0006> transaction.c:104 ms 1 frees transaction (mem 0xf408d0) <0009> mnccms.c:372 Call has been released (cause 21) <0009> mnccms.c:71 (call 1) Call removed. and also my ms output from vty OsmocomBB> enable OsmocomBB# show ms MS '1' is up, service is limited IMEI: 418873812577882 IMEISV: 4188738125778820 IMEI generation: random (15 trailing digits) automatic network selection state: A0 null cell selection state: C0 null radio ressource layer state: idle mobility management layer state: MM idle, PLMN search OsmocomBB# show subsccriber 1 % Unknown command. OsmocomBB# show sub OsmocomBB# show subscriber 1 OsmocomBB# show subscriber 1 Mobile Subscriber of MS '1': IMSI: 405025012498239 ICCID: 89910255110124982391 Status: U1_UPDATED IMSI detached TMSI 0x1d315a07 LAI: MCC 405 MNC 025 LAC 0x42d8 (405, TATA DOCOMO) Key: sequence 2 a6 78 30 12 22 45 0b 03 Access barred cells: no Access classes: Kindly assist me with some suggestions. Regards, Cris