Data acknowledge message

The data acknowledge message is used by the application to acknowledge one or more regular or a single expedited data packet from the far end (SCCPDAckRqst) when employing the SCCP connection-oriented services (class 2 or 3). This message is also received by the application to indicate an incoming regular or expedited data ACK packet from a far end point (SCCPDACKIND).

typedef struct sccpDAckRqst
{
  SccpNextRS  rsn;     /* rcv seq. # (M-normal data only- not used for
                        * expedited                                      */
  SccpCredit  credit;  /* window size (M-normal data only- not used for
                        * expedited)                                     */
  U16         spare1;  /* spare for alignment                            */
} SccpDAckRqst;