NAME
          irServiceDataSuspend, irCallDataSuspend, irCallDataResume,
          irSetServiceEventBuf, irGetServiceEventBuf - manipulate call
          and service data

     SYNOPSIS
          #include <irapi.h>

          int irCallDataSuspend (channel_id cid);

          int irServiceDataSuspend (channel_id cid);

          int irCallDataResume (channel_id cid);

          int irSetServiceEventBuf (channel_id cid, int event_number,
          void *src, size_t size);

          int irGetServiceEventBuf (channel_id cid, int event_number,
          void *dest, size_t size);

     DESCRIPTION
          These functions manage the IRAPI call data record that is
          stored for the cid owned by the application.  Call and ser-
          vice data are normally initialized and posted (written to
          the Call Data Handler (CDH)) for the application automati-
          cally by the IRAPI at appropriate times.

          The following table shows when per channel call data is ini-
          tialized and written for the CALL and SERVICE data.  Note
          that EVENTS data is initialized and written in synchrony
          with SERVICE.


            Data            Initialized                   Written
           ______________________________________________________________
           CALL      IRE_CHAN_GRANT,              irDeinit()
                     irExec() by Default Owner,
                     irCallDataResume()

           SERVICE   irInit() returning IRR_OK,   irDeinit(), irReturn(),
                     IRE_CHAN_GRANT,              irExec()
                     irCallDataResume()

          1.  CALL Data: This part of the record consists of call
              specific data such as the channel number on which the
              call was handled and the start time and end time of the
              call.  When CALL Data are initialized, the channel
              number is set and the start time is set to the current
              system time.  The end time is set when the CALL Data are
              written.

          2.  SERVICE Data: Since many different applications ("ser-
              vices") may run during a call, there may be more than
              one SERVICE Data record per CALL Data record.  SERVICE
              Data consist of service specific information such as the
              service name, the start time and end time of the ser-
              vice, and the service EVENTS data (described below).
              When SERVICE Data are initialized, the service name is
              set from the value of IRP_SERVICE_NAME parameter, the
              start time is set to the current system time, and the
              service EVENTS data are set to null.  The end time is
              set when the SERVICE Data are written.

          3.  EVENTS Data: The service EVENTS data are a subset of the
              SERVICE data described above.  EVENTS data are stored in
              a IRD_MAX_CDSEV word (integer) array totalling
              sizeof(int) * IRD_MAX_CDSEV bytes in length.  This array
              may contain event data in the form of integers or
              strings.  Each data item must begin on a word (4-byte
              integer) boundry.  Each item stored in the EVENTS data
              buffer is assigned an <event_number> between 0 and
              IRD_MAX_CDSEV-1 (corresponding to its index in the
              buffer) and an <event_name> (an alphanumeric label for
              the event to be used in Call Data Reports).  The struc-
              ture of the IRD_MAX_CDSEV word sized block (event IDs,
              names, and data types) is described to the call data
              subsystem through the <service_name>.D file.
              <service_name> is taken from the IRP_SERVICE_NAME param-
              eter.  This file must exist in the /vs/trans directory
              for both writing and reading the EVENTS data.  If it
              does not exist, the EVENTS data will be dropped.
              event (each consecutive <event_number> represents 4
              bytes of space).

          The function irServiceDataSuspend will inhibit writing any
          SERVICE and EVENTS data for the current application to the
          CDH when irDeinit(3IRAPI), irExec(3IRAPI) or
          irReturn(3IRAPI) is called.

          The function irCallDataResume will reinitialize CALL and
          SERVICE data (setting the start time for each to the current
          time) for the current application.  Any EVENTS data set by
          the application with irSetServiceEventBuf() before calling
          this function remains unchanged.

          The function irSetServiceEventBuf sets call data service
          event number event_number to src, where size is the size of
          the data pointed to by src in bytes.  The function
          irGetServiceEventBuf copys into the area pointed to by dest
          the data for event_number , where size is the size of the
          data to be copied in bytes.  A valid event_number is simply
          an integer ranging from 0 to IRD_MAX_CDSEV-1 that may have
          arbitrary meanings for end-user applications.  (See the dis-
          cussion of the <service_name>.D file above.)

     RETURN VALUE
          IRR_OK is returned if the request is successful.

          IRR_FAIL is returned if an error occurs.

          This is version 10/24/02 of this man page.