struct scb {
       struct  scb *next;  /* pointer to next SCB in chain */
       struct  scb *prev;
       char    hs_id[8];
       char    lu_name[8]; /* имя LU  - партнера по сессии*/
       char    mode_name[8];
       struct  rcb *p_rcb;
       char    fully_qualified_lu_name[18];
       char    *random_data;
       unsigned char use;
       struct  rpl *p_rpl; /* RPL associated with this session*/
       };