Baseband: MS '1' is up, service is limited

Hi all, *I connected, sent and made call successful with osmocombb (with real IMSI and IMEI). But, now, I get error, always be rejected:* OsmocomBB# show ms MS '1' is up, service is limited IMEI: 357337016773249 IMEISV: 3573370167732490 IMEI generation: fixed automatic network selection state: A0 null cell selection state: PLMN search radio ressource layer state: idle mobility management layer state: MM idle, PLMN search OsmocomBB# % (MS 1) % Trying to registering with network... *in my config file (/root/.osmocom/bb/mobile.cfg)**:* ! ! OsmocomBB () configuration saved from vty !! ! line vty no login ! gps device /dev/ttyACM0 gps baudrate default no gps enable ! no hide-default ! ms 1 layer2-socket /tmp/osmocom_l2 sap-socket /tmp/osmocom_sap sim reader network-selection-mode auto imei 357337016773249 0 imei-fixed emergency-imsi 452040399998391 sms-service-center +84980200030 no call-waiting no auto-answer no force-rekey no 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 gsm-850 dcs 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 -106 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 ! Anyone help me???, thanks a lot! -- Thanks and Best Regards -- From: Hoàng Mạnh Hùng