Maxim Integrated 73M1866B/73M1966B Reference Driver - Manual (Page 69)

UG_1x66B_015 73M1866B/73M1966B Reference Driver User Guide
Rev. 2.7 69
6.9.3 M1966_CPROG_MONITOR
Description
The Call Progress Monitor monitors activities on the line. The audio output contains both transmit and
receive data with a configurable level individually can be set using this IOCTL.
#define M1966_CPROG_MONITOR _IOWR(0xA4,0xF0,unsigned int)
Prototype
int ioctl (
int chan_fd,
int M1966_CPROG_MONITOR,
unsigned long param );
Parameters
Data Type Name Description
int chan_fd Channel descriptor.
int M1966_CPROG_MONITOR I/O control identifier for this operation.
unsigned long Param Pointer to structure x
Return Values
Data Type Description
int -EFAULT – Failed to perform call progress monitor.
0 – Successful.