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cc_Restart( ) resets the channel to Null state
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cc_Close(devhdl);
}
/******************************************************************
/* NAME: void WaitCallThread(devhdlptr)
/* DESCRIPTION: Waits for incoming call.
/* INPUT: devhdlptr - pointer to devhdl
/* RETURNS: none.
******************************************************************/
void WaitCallThread(void *devhdlptr)
{
short devhdl = *devhdlptr; /* device handle */
CRN crn; /* call reference number */
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while(1)
{
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/* wait for an incoming call */
if ( cc_WaitCall(devhdl,&crn,NULL,-1,EV_SYNC)<0)
procdevfail(devhdl);
if ( cc_AnswerCall(crn,0,EV_SYNC)<0)
callfail(crn);
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}
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}
/*
/* function to make an outbound call
*/
int makecall(short devhdl)
{
CRN crn; /* call reference number */
char *dialnum = “12019933000”; /* outgoing phone number */
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/*
*This cc_Restart() allows the B channel line device to
*escape from cc_WaitCall(), or other multitasking
*functions.
*/
if ( cc_Restart(devhdl, EV_SYNC) <0)
procdevfail(devhdl);
/*
* Now it’s safe to make a call. To avoid contention,
* a mechanism to prevent other multitasking functions
* from being invoked again, such as cc_WaitCall(),