Maxim Integrated 73M1822/73M1922 Control Module - Manual (Page 69)

UG_1x22_053 73M1822/73M1922 Control Module User Guide
Rev. 1.0 69
7.10.3 M1X22_BTONE_FILTER_t
Description
This structure is used by the M1X22_BTONE_FILTER IOCTL to enable or to disable the billing tone. The
filter is by default disable upon initialization and can be enabled to reject a tone of specific frequency
using this IOCTL.
Prototype
typedef struct m1X22_btone_filter
{
M1X22_BTONE_FILTER_COMMAND command; /* command */
M1X22_BTONE_FREQUENCY frequency; /* billing tone frequency */
}
M1X22_BTONE_FILTER_t;
Parameters
Data Type Name Description
unsigned char acz Active termination loop.
unsigned char dciv DC current voltage characteristic control.
unsigned char rgth Ring threshold.