The following integrated services tspecs apply to the integrated services data structures and macros:

• Type IS_tspbody_t is defined by typedef as a structure to represent an Integrated Services Tspec, and has at least the following members:

  Member	Type	Usage
  st_mh	IS_main_hdr_t
  tspec_u	union (1)
  gen_stspec	gen_Tspec_t	Generic Tspec
  Note: (1) While service-dependent Tspecs are possible, there are none.

• The following macros are defined with the values given below:

  Macro	Value
  IStmh_len32b	st_mh.ismh_len32b
  IStmh_unused	st_mh.ismh_unused
  IStmh_version	st_mh.ismh_version