5.2. Routing Using Individual SCbus Routing Functions

• 5.2.1. Windows Sample Code for Individual SCbus Routing Functions
• 5.2.2. Linux Sample Code for Individual SCbus Routing Functions
• 5.2.3. MS-DOS Sample Code for Individual SCbus Routing Functions
• 5.2.4. OS/2 Sample Code for Individual SCbus Routing Functions

To route the channels using individual SCbus routing functions, perform the following, see Figure 5:

1. Initialize the SC_TSINFO structure with the required information.
2. Get the SC_TSINFO structure that contains the number of the SCbus time slot connected to digital transmit channel 23 of the second D/240SC-T1 board by issuing a dt_getxmitslot( ) call.
3. Connect digital listen channel 12 of the first D/240SC-T1 board to digital transmit channel 23 of the second D/240SC-T1 board by issuing a dt_listen( ) call. This function uses as input the information contained in the SC_TSINFO structure returned by the dt_getxmitslot( ) call of step 2.
4. Get the SC_TSINFO structure that contains the number of the SCbus time slot connected to digital transmit channel 12 of the first D/240SC-T1 board by issuing a dt_getxmitslot( ) call.
5. Connect digital receive channel 23 of the second D/240SC-T1 board to digital transmit channel 12 of the first D/240SC-T1 board by issuing a dt_listen( ) call. This function uses as input the information contained in the SC_TSINFO structure returned by the dt_getxmitslot( ) call of step 4.

When these functions return, full duplex communications between the two digital channels will be established.

5.2.1. Windows Sample Code for Individual SCbus Routing Functions

#include <windows.h>  
#include <errno.h>  
#include <srllib.h>  
#include <dtilib.h>  
main()  
{  
   int        dtih1,        /* D/240SC-T1 #1  T-1 time slot handle  */  
              dtih2;        /* D/240SC-T1 #2  T-1 time slot handle  */  
   SC_TSINFO  sc_tsinfo;    /* time slot information structure      */  
   long       scts;         /* SCbus time slot                      */  
   /* Open T-1 time slot 12 on D/240SC-T1 #1. */  
   if ((dtih1 = dt_open("dtiB1T12", 0)) == -1) {  
      printf("Cannot open T-1 time slot dtiB1T12.   errno = %d", errno);  
      exit(1);  
   }  
   /* Open T-1 time slot 23 on D/240SC-T1 #2. */  
   if ((dtih2 = dt_open("dtiB2T23", 0)) == -1) {  
      printf("Cannot open T-1 time slot dtiB2T23.   errno = %d", errno);  
      exit(1);  
   }  
   .  
   . Continue processing.  
   .  
   /***** SCbus routing example. *****/  
   /* Initialize the SC_TSINFO structure with the necessary information. */  
   sc_tsinfo.sc_numts = 1;  
   sc_tsinfo.sc_tsarrayp = &scts;  
   /*  
    * Get the SCbus time slot on which the 12th T-1 time slot (of the first  
    * D/240SC-T1) is transmitting.  
    */  
   if (dt_getxmitslot(dtih1, &sc_tsinfo) == -1) {  
      printf("dt_getxmitslot() failed: Error message = %s", ATDV_ERRMSGP(dtih1));  
      exit(1);  
   }  
   /*  
    * Make T-1 time slot 23 (of the second D/240SC-T1) listen to the  
    * SCbus time slot that T-1 time slot 12 (on the first D/240SC-T1)  
    * is transmitting on.  
    */  
   if (dt_listen(dtih2, &sc_tsinfo) == -1) {  
      printf("dt_listen() failed: Error message = %s", ATDV_ERRMSGP(dtih2));  
      exit(1);  
   }  
   /*  
    * Get the SCbus time slot on which the 23rd T-1 time slot (of the  
    * second D/240SC-T1) is transmitting.  
    */  
   if (dt_getxmitslot(dtih2, &sc_tsinfo) == -1) {  
      printf("dt_getxmitslot() failed: Error message = %s", ATDV_ERRMSGP(dtih2));  
      exit(1);  
   }  
   /*  
    * Make T-1 time slot 12 (of the first D/240SC-T1) listen to the  
    * SCbus time slot that T-1 time slot 23 (on the second D/240SC-T1)  
    * is transmitting on.  
    */  
   if (dt_listen(dtih1, &sc_tsinfo) == -1) {  
      printf("dt_listen() failed: Error message = %s", ATDV_ERRMSGP(dtih1));  
      exit(1);  
   }  
   .  
   . Continue processing.  
   .  
}




5.2.2. Linux Sample Code for Individual SCbus Routing Functions

#include <srllib.h>  
#include <dtilib.h>  
#include <errno.h>  
main()  
{  
   int        dtih1,        /* D/240SC-T1 #1  T-1 time slot handle  */  
              dtih2;        /* D/240SC-T1 #2  T-1 time slot handle  */  
   SC_TSINFO  sc_tsinfo;    /* time slot information structure      */  
   long       scts;         /* SCbus time slot                      */  
   /* Open T-1 time slot 12 on D/240SC-T1 #1. */  
   if ((dtih1 = dt_open("dtiB1T12", 0)) == -1) {  
      printf("Cannot open T-1 time slot dtiB1T12.   errno = %d", errno);  
      exit(1);  
   }  
   /* Open T-1 time slot 23 on D/240SC-T1 #2. */  
   if ((dtih2 = dt_open("dtiB2T23", 0)) == -1) {  
      printf("Cannot open T-1 time slot dtiB2T23.   errno = %d", errno);  
      exit(1);  
   }  
   .  
   . Continue processing.  
   .  
   /***** SCbus routing example. *****/  
   /* Initialize the SC_TSINFO structure with the necessary information. */  
   sc_tsinfo.sc_numts = 1;  
   sc_tsinfo.sc_tsarrayp = &scts;  
   /*  
    * Get the SCbus time slot on which the 12th T-1 time slot (of the first  
    * D/240SC-T1) is transmitting.  
    */  
   if (dt_getxmitslot(dtih1, &sc_tsinfo) == -1) {  
      printf("dt_getxmitslot() failed: Error message = %s", ATDV_ERRMSGP(dtih1));  
      exit(1);  
   }  
   /*  
    * Make T-1 time slot 23 (of the second D/240SC-T1) listen to the  
    * SCbus time slot that T-1 time slot 12 (on the first D/240SC-T1)  
    * is transmitting on.  
    */  
   if (dt_listen(dtih2, &sc_tsinfo) == -1) {  
      printf("dt_listen() failed: Error message = %s", ATDV_ERRMSGP(dtih2));  
      exit(1);  
   }  
   /*  
    * Get the SCbus time slot on which the 23rd T-1 time slot (of the  
    * second D/240SC-T1) is transmitting.  
    */  
   if (dt_getxmitslot(dtih2, &sc_tsinfo) == -1) {  
      printf("dt_getxmitslot() failed: Error message = %s", ATDV_ERRMSGP(dtih2));  
      exit(1);  
   }  
   /*  
    * Make T-1 time slot 12 (of the first D/240SC-T1) listen to the  
    * SCbus time slot that T-1 time slot 23 (on the second D/240SC-T1)  
    * is transmitting on.  
    */  
   if (dt_listen(dtih1, &sc_tsinfo) == -1) {  
      printf("dt_listen() failed: Error message = %s", ATDV_ERRMSGP(dtih1));  
      exit(1);  
   }  
   .  
   . Continue processing.  
   .  
}




5.2.3. MS-DOS Sample Code for Individual SCbus Routing Functions

#include <stdlib.h>  
#include <stdio.h>  
#include "d40.h"  
#include "dti.h"  
#include "d40lib.h"  
#include "dtilib.h"  
#include "dtierr.h"  
#include "vfcns.h"  
int main()  
{  
   int          dti_bd1 = 1,  /* D/240SC-T1 #1 network brd device handle.  */  
                dti_ts1 = 12, /* T-1 time slot number.                     */  
                dti_bd2 = 2,  /* D/240SC-T1 #2 network brd device handle.  */  
                dti_ts2 = 23, /* T-1 time slot number.                     */  
                rcode;        /* To hold function error return codes.      */  
   unsigned int sc_IRQ = 10,  /* SCbus board interrupt (from DIALOGIC.CFG) */  
                num_chans,    /* Location for number of voice channels     */  
                              /*  returned by startsys().                  */  
                num_dti_brd,  /* Location for number of DTI boards         */  
                              /*  returned by startdti().                  */  
                num_dti_ts;   /* Location for number of DTI time slots     */  
                              /*  returned by startdti().                  */  
   SC_TSINFO    sc_tsinfo;    /* time slot information structure           */  
   long         scts;         /* SCbus time slot                           */  
   /***** Initialize system. ******/  
   /* Make sure the voice driver is loaded. */  
   if (getvctr() == 0) {  
      printf("Voice driver is not loaded.");  
      exit(1);  
   }  
   /* Make sure the DTI driver is stopped before starting. */  
   stopdti();  
   /* Make sure the voice driver is stopped before starting. */  
   stopsys();  
   /* Start the voice driver. */  
   if ((rcode = startsys(sc_IRQ, SM_EVENT, 0, 0, &num_chans)) != E_SUCC) {  
      printf("Could not start voice driver: Error message = %s", d4xerr(rcode));  
      exit(1);  
   }  
   /* Start the DTI driver. */  
   if ((rcode = startdti(&num_dti_brd, &num_dti_ts)) != E_DTSUCC) {  
      printf("Could not start DTI driver: Error = %d", rcode);  
      exit(1);  
   }  
   .  
   .  Continue processing.  
   .  
   /****** SCbus routing example. ******/  
   /* Initialize the SC_TSINFO structure with the necessary information. */  
   sc_tsinfo.sc_numts = 1;  
   sc_tsinfo.sc_tsarrayp = &scts;  
   /*  
    * Get the SCbus time slot on which the 12th T-1 time slot (of the first  
    * D/240SC-T1) is transmitting.  
    */  
   if ((rcode = dt_getxmitslot(DT_MKTSLOT(dti_bd1, dti_ts1), &sc_tsinfo)) != E_DTSUCC) {  
      printf("dt_getxmitslot() failed: Error = %d", rcode);  
      exit(1);  
   }  
   /*  
    * Make T-1 time slot 23 (of the second D/240SC-T1) listen to the  
    * SCbus time slot that T-1 time slot 12 (on the first D/240SC-T1)  
    * is transmitting on.  
    */  
   if ((rcode = dt_listen(DT_MKTSLOT(dti_bd2, dti_ts2), &sc_tsinfo)) != E_DTSUCC) {  
      printf("dt_listen() failed: Error = %d", rcode);  
      exit(1);  
   }  
   /*  
    * Get the SCbus time slot on which the 23rd T-1 time slot (of the  
    * second D/240SC-T1) is transmitting.  
    */  
   if ((rcode = dt_getxmitslot(DT_MKTSLOT(dti_bd2, dti_ts2), &sc_tsinfo)) != E_DTSUCC) {  
      printf("dt_getxmitslot() failed: Error = %d", rcode);  
      exit(1);  
   }  
   /*  
    * Make T-1 time slot 12 (of the first D/240SC-T1) listen to the  
    * SCbus time slot that T-1 time slot 23 (on the second D/240SC-T1)  
    * is transmitting on.  
    */  
   if ((rcode = dt_listen(DT_MKTSLOT(dti_bd1, dti_ts1), &sc_tsinfo)) != E_DTSUCC) {  
      printf("dt_listen() failed: Error = %d", rcode);  
      exit(1);  
   }  
   .  
   .  Continue processing.  
   .  
}




5.2.4. OS/2 Sample Code for Individual SCbus Routing Functions

#define INCL_DOSERRORS  
#include <os2.h>  
#include <stdlib.h>  
#include <stdio.h>  
#include <voxlib.h>  
#include <dtilib.h>  
#include <dti2lib.h>  
main()  
{  
   int        dtih1,        /* D/240SC-T1 #1 T-1 time slot handle   */  
              dtih2;        /* D/240SC-T1 #2 T-1 time slot handle   */  
   SC_TSINFO  sc_tsinfo;    /* time slot information structure      */  
   long       scts;         /* SCbus time slot                      */  
   /* Open T-1 time slot 12 on D/240SC-T1 #1. */  
   if ((dtih1 = dt_open("DTIB0T11", 0)) == -1) {  
      printf("Cannot open T-1 time slot DTIB0T11.  dl_errno = %d", dl_errno);  
      exit(1);  
   }  
   /* Open T-1 time slot 23 on D/240SC-T1 #2. */  
   if ((dtih2 = dt_open("DTIB1T22", 0)) == -1) {  
      printf("Cannot open T-1 time slot DTIB1T22.  dl_errno = %d", dl_errno);  
      exit(1);  
   }  
   .  
   . Continue processing.  
   .  
   /***** SCbus routing example. *****/  
   /* Initialize the SC_TSINFO structure with the necessary information. */  
   sc_tsinfo.sc_numts = 1;  
   sc_tsinfo.sc_tsarrayp = &scts;  
   /*  
    * Get the SCbus time slot on which the 12th T-1 time slot (of the first  
    * D/240SC-T1) is transmitting.  
    */  
   if (dt_getxmitslot(dtih1, &sc_tsinfo) == -1) {  
      printf("dt_getxmitslot() failed: Error message = %s", ATDT_ERRMSGP(dtih1));  
      exit(1);  
   }  
   /*  
    * Make T-1 time slot 23 (of the second D/240SC-T1) listen to the  
    * SCbus time slot that T-1 time slot 12 (on the first D/240SC-T1)  
    * is transmitting on.  
    */  
   if (dt_listen(dtih2, &sc_tsinfo) == -1) {  
      printf("dt_listen() failed: Error message = %s", ATDT_ERRMSGP(dtih2));  
      exit(1);  
   }  
   /*  
    * Get the SCbus time slot on which the 23rd T-1 time slot (of the  
    * second D/240SC-T1) is transmitting.  
    */  
   if (dt_getxmitslot(dtih2, &sc_tsinfo) == -1) {  
      printf("dt_getxmitslot() failed: Error message = %s", ATDT_ERRMSGP(dtih2));  
      exit(1);  
   }  
   /*  
    * Make T-1 time slot 12 (of the first D/240SC-T1) listen to the  
    * SCbus time slot that T-1 time slot 23 (on the second D/240SC-T1)  
    * is transmitting on.  
    */  
   if (dt_listen(dtih1, &sc_tsinfo) == -1) {  
      printf("dt_listen() failed: Error message = %s", ATDT_ERRMSGP(dtih1));  
      exit(1);  
   }  
   .  
   . Continue processing.  
   .  
}

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