1，SA reject with cause=27 & LTE reject with cause=15
2,  limted service for above 2mins



  registration_reject
    _5gmm_cause = 27 (0x1b) (N1 mode not allowed)
  emm_attach_reject
    cause_value = 15 (0xf) (No Suitable Cells In tracking area)

09:20:22.645028          [            cmss_c.c   3363] last_system OPER sub 0 stack 0 mode 12, status 1
09:20:23.289228          [            cmss_c.c   3363] last_system OPER sub 0 stack 0 mode 9, status 1
09:20:23.925082          [            cmss_c.c   3363] last_system OPER sub 0 stack 0 mode 5, status 1
09:21:22.865826          [            cmss_c.c   3363] last_system OPER sub 0 stack 0 mode 0, status 0
09:21:53.463497          [            cmss_c.c   3363] last_system OPER sub 0 stack 0 mode 9, status 1
09:21:55.874553          [            cmss_c.c   3363] last_system OPER sub 0 stack 0 mode 12, status 1
09:22:35.422997          [            cmss_c.c   3363] last_system OPER sub 0 stack 0 mode 12, status 1