
UG_1x22_055 73M1822/73M1922 Modem API User Guide
Rev. 1.0 7
2 API Descriptions
This section contains the detail description of each API. Table 1 provides a summary of the APIs.
Table 1: API Overview
IOCTL Name Description
API subsystem initialization.
API subsystem release or termination.
Open device of event reporting.
Close an opened device.
Open channel for operation.
Close an opened channel.
Initialize channel for specific region.
Perform hook switching – on/off-hook.
Pulse dialing.
Read 1x22 register.
Read all registers.
Write to 1x22 register.
Set debug trace mask.
Set speaker phone and microphone volume.
M1X22_CallProgressMonitor
Monitor activities on the line.
Get file descriptor from a handle.
Read current IET entry.
Update current IET entry.
Delete the current IET table entry.
Read the voltage IET table entry.
Update voltage IET entry.
Delete the voltage IET table entry.
M1X22_StartMeasureCurrent
Start current measurement.
M1X22_StartMeasureVoltage
Start voltage measurement.
Stop current measurement.
Stop voltage measurement.
Set Ring Cadence filtering criteria.
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