C_OCTET( instancia, system_id, 16 );
C_OCTET( instancia, password, 9 );
C_OCTET( instancia, system_type, 13 );
    U08( instancia, interface_version, test_interface_version );
    U08( instancia, addr_ton, str_addr_ton );
    U08( instancia, addr_npi, str_addr_npi );
C_OCTET( instancia, address_range, 41 );