cc_StopTrace( )

Description | Cautions | Example | Errors | See Also

Name:	int cc_StopTrace(boarddev)
Inputs:	LINEDEV boarddev	board device handle
Returns:	0 on success < 0 on failure
Includes:	cclib.h
Category:	System control
Mode:	asynchronous
Technology:	BRI/2; BRI/SC; PRI (all protocols)

Description

The cc_StopTrace( ) function stops the trace that was started using the cc_StartTrace( ) function, discards the trace information, and closes the file.

Parameter	Description
boarddev:	The line device handle of the D channel board.

Cautions

None

Example

#include <windows.h>   /* For Windows applications only */  
#include <stdio.h>  
#include <errno.h>  
#include "srllib.h"  
#include "dtilib.h"  
#include "cclib.h"  
void main()  
{  
   LINEDEV   brddevhdl;  /* device handle for D channel */  
   LINEDEV   devhdl    = 0;  
   CRN       crn = 0;  
   char     *devname = "dtiB1";  
   .  
   .  
   .  
   if ( cc_Open(brddevhdl,devname, 0 ) < 0 )   
       exit(1);  
   if ( cc_Open( &devhdl, devname, 0 ) < 0 )   
   {  
      printf("Error opening device: errno = %d\n", errno);  
      exit(1);  
   }  
   /*   
      using cc_StartTrace() to begin  
      the trace function and save it on file "istrace.log".  
      Note that the brddevhdl is a board level device.  
    */   
   if ( cc_StartTrace(brddevhdl,"istrace.log") < 0 )  
        procdevfail(brddevhdl);  
   printf("Waiting for call\n");  
   if ( cc_WaitCall(devhdl, &crn, NULL, -1, EV_SYNC) < 0 )  
        procdevfail(devhdl);  
   if ( cc_AnswerCall(crn, 0, EV_SYNC) < 0 )  
        callfail(crn);  
        .  
        .  
        .  
        .  
        .  
   /* Drop the call */  
   if ( cc_DropCall(crn, NORMAL_CLEARING, EV_SYNC) < 0 )  
        callfail(crn);  
   if ( cc_ReleaseCall(crn) < 0 )  
        callfail(crn);  
   /*   
      using cc_StopTrace() to stop  
      the trace function and close the file.  
      Note that the brddevhdl is a board level device.  
    */   
   if ( cc_StopTrace(brddevhdl) < 0 )  
        procdevfail(brddevhdl);  
   /* Close the device */  
   if ( cc_Close( devhdl ) < 0 )   
      printf("Error closing device, errno = %d\n", errno);  
   if ( cc_Close(brddevhdl) < 0 )   
      printf("Error closing device, errno = %d\n", errno);  
}  
int callfail(CRN crn)  
{                 
        LINEDEV ld;  
         cc_CRN2LineDev(crn,&ld);  
         procdevfail(ld);  
}  
int procdevfail(LINEDEV handle)  
{  
        int reason;  
        char *msg;  
        reason = cc_CauseValue(handle);  
        cc_ResultMsg(handle,reason,&msg);  
        printf("reason = %x - %s\n",reason,msg);  
}

Errors

If the function returns < 0 to indicate failure, use the cc_CauseValue( ) function to retrieve the reason code for the failure. The cc_ResultMsg( ) function can be used to interpret the reason code. Error codes are defined in the files ccerr.h, isdnerr.h, and isdncmd.h.

Error codes from the cc_StopTrace( ) function include the following:

Error Code	Description
ERR_ISDN_LIB | E_ISTNACT	Trace information is not/is already activated
ERR_ISDN_LIB | E_ISBADIF	Bad interface number

See Also

• cc_StartTrace( )

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