dcb_unmonconf( )

Description | Cautions | Example | Errors | See Also

Name:	int dcb_unmonconf(devh,confid)
Inputs:	int devh	DCB/SC DSP device handle
	int confid	conference ID
Returns:	0 on success -1 on failure
Includes:	srllib.h dtilib.h msilib.h dcblib.h
Category:	Conference Management
Mode:	synchronous

Description

The dcb_unmonconf( ) function removes a monitor from a conference.

Parameter	Description
devh:	The DCB/SC DSP device handle.
confid:	The conference identifier.

NOTES:

1. Calling this function frees one resource.

2. Dialogic recommends that the appropriate xx_unlisten( ) function be called for each conferee listening to the monitored signal before dcb_unmonconf( ) is called.

Cautions

This function fails when:

• The device handle specified is invalid.
• It is called for a non-DCB/SC board.
• An invalid conference is specified.
• A monitor does not exist in the conference.

Example

#include <windows.h>  
#include <stdio.h>  
#include "srllib.h"  
#include "dtilib.h"  
#include "msilib.h"  
#include "dcblib.h"  
#include "errno.h"  
#define NUM_PARTIES     2  
main()  
{  
   int  dspdevh;                     /* DCB/SC DSP device handle */  
   MS_CDT  cdt[NUM_PARTIES];         /* Conference descriptor table */  
   int  confid;                      /* Conference ID */  
   int  tsdevh1, tsdevh2, tsdevh3;   /* DTI time slot device handles */  
   long  lts, scts;                  /* listen/transmit time slots */  
   SC_TSINFO  tsinfo;                /* Time slot information structure */  
   /* Open DCB/SC board 1, DSP 1 device */  
   if ((dspdevh = dcb_open("dcbB1D1",0)) == -1) {  
      printf("Cannot open dcbB1D1 : errno = %d", errno);  
      exit(1);  
   }  
   /* Open DTI board 1, time slot 1 */  
   if ((tsdevh1 = dt_open("dtiB1T1",0)) == -1) {  
      printf( "Cannot open dtiB1T1 : errno = %d", errno);    
      exit(1);  
   }  
   /* Prepare the time slot information structure */  
   tsinfo.sc_numts = 1;  
   tsinfo.sc_tsarrayp = &scts;  
   /* Get transmit time slot of DTI tsdevh1 */  
   if (dt_getxmitslot(tsdevh1, &tsinfo) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(tsdevh1));  
      exit(1);  
   }  
   /* Set up CDT structure */  
   cdt[0].chan_num  = (int)scts;    /* SCbus time slot returned */  
   cdt[0].chan_sel  = MSPN_TS;      /* by dt_getxmitslot() */  
   cdt[0].chan_attr = MSPA_NULL;    /* Conferee has no special attributes */  
   /* Open DTI board 1, time slot 2 */  
   if ((tsdevh2 = dt_open("dtiB1T2",0)) == -1) {  
      printf( "Cannot open dtiB1T2 : errno = %d", errno);    
      exit(1);  
   }  
   /* Open board 1, time slot 3 */  
   if ((tsdevh3 = dt_open("dtiB1T3",0)) == -1) {  
      printf( "Cannot open dtiB1T3: errno=%d", errno);    
      exit(1);  
   }  
   /* get transmit time slot of DTI TS device 2 */  
   if (dt_getxmitslot(tsdevh2, &tsinfo) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(tsdevh2));  
      exit(1);  
   }  
   /* Set up CDT structure */  
   cdt[1].chan_num  = (int)scts;    /* SCbus time slot returned */  
   cdt[1].chan_sel  = MSPN_TS;      /* by dt_getxmitslot() */  
   cdt[1].chan_attr = MSPA_NULL;    /* Conferee has no special attributes */  
   /* Establish a 2 party conference */  
   if (dcb_estconf(dspdevh, cdt, NUM_PARTIES, MSCA_ND, &confid) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(dspdevh));  
      exit(1);  
   }  
   /* Do a listen for the DTI tsdevh1 device */  
   tsinfo.sc_numts = 1;  
   tsinfo.sc_tsarrayp = &cdt[0].chan_lts;  
   if (dt_listen(tsdevh1,&tsinfo) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(tsdevh1));  
      exit(1);  
   }
  
   /* Do a listen for the DTI tsdevh2 device */  
   tsinfo.sc_numts = 1;  
   tsinfo.sc_tsarrayp = &cdt[1].chan_lts;  
   if (dt_listen(tsdevh2,&tsinfo) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(tsdevh2));  
      exit(1);  
   }  
   /* Now monitor the conference on SCbus time slot lts */  
   if((dcb_monconf(dspdevh, confid, &lts)) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(dspdevh));  
      exit(1);  
   }  
   /* Prepare a time slot info structure */  
   tsinfo.sc_numts = 1;  
   tsinfo.sc_tsarrayp = &lts;  
   /* And let a DTI time slot, tsdevh3, monitor the conference */  
   if (dt_listen(tsdevh3,&tsinfo) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(tsdevh4));  
      exit(1);  
   }  
   /* Perform an 'unlisten' for the DTI time slot */  
   if (dt_unlisten(tsdevh3) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(tsdevh4));  
      exit(1);  
   }  
   /* Now remove the monitoring */  
   if((dcb_unmonconf(dspdevh,confid)) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(dspdevh));  
      exit(1);  
   }  
   /* Perform 'unlistens' for the remaining DTI time slots */  
   if (dt_unlisten(tsdevh1) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(tsdevh1));  
      exit(1);  
   }  
   if (dt_unlisten(tsdevh2) == -1){  
      printf("Error Message : %s", ATDV_ERRMSGP(tsdevh2));  
      exit(1);  
   }  
   /* Delete the conference */  
   if(dcb_delconf(dspdevh, confid) == -1) {  
      printf("Cannot delete conference %d : Error Message = %s", confid,  
	   ATDV_ERRMSGP(dspdevh));  
      exit(1);  
   }  
   /* And close all open devices */  
   if (dt_close(tsdevh1) == -1){  
      printf("Error closing tsdevh1\n");  
      exit(1);  
   }  
   if (dt_close(tsdevh2) == -1){  
      printf("Error closing tsdevh2\n");  
      exit(1);  
   }  
   if (dt_close(tsdevh3) == -1){  
      printf("Error closing tsdevh3\n");  
      exit(1);  
   }  
   if (dcb_close(dspdevh) == -1){  
      printf("Cannot close dcbB1D1 : errno = %d\n", errno);  
      exit(1);  
   }  
   
}

Errors

If the function does not complete successfully, it will return -1 to indicate an error. Use the Standard Attribute functions ATDV_LASTERR( ) to obtain the applicable error value, or ATDV_ERRMSGP( ) to obtain a more descriptive error message.

Refer to the error type tables found in Chapter 2 of this guide. Error defines can be found in dtilib.h, msilib.h or dcblib.h.

See Also

• dcb_estconf( )
• dcb_monconf( )

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