Function summary

The following functions perform CDI service low-level call control:

Function	Synchronous/ Asynchronous	Description
cdiAssertSignal	Synchronous	Asserts a supervisory signaling pattern to the line.
cdiDisableBattery	Synchronous	Removes the power to the station attached to a port.
cdiEnableBattery	Synchronous	Supplies power to the station attached to a port.
cdiGetSignalState	Synchronous	Retrieves the current state of the supervisory signaling bits.
cdiStartDTMFDetector	Asynchronous	Enables the DTMF detector.
cdiStartRing	Synchronous	Starts station ringing.
cdiStartSignalDetector	Asynchronous	Starts monitoring the signaling bits.
cdiStartTimer	Asynchronous	Starts (or restarts) a timer on a port.
cdiStartTones	Asynchronous	Starts the transmission of a tone.
cdiStopDTMFDetector	Synchronous	Disables the DTMF detector.
cdiStopRing	Synchronous	Stops station ringing.
cdiStopSignalDetector	Synchronous	Stops monitoring the signaling bits.
cdiStopTimer	Asynchronous	Aborts the timer operation.
cdiStopTones	Synchronous	Stops the tone transmission.

The following functions manage CDI service boards:

Function	Synchronous/ Asynchronous	Description
cdiGetBoardStatus	Synchronous	Registers the application to receive board status change events.
cdiReadThermometer	Synchronous	Returns the current temperature of a board.
cdiStartStatusMonitoring	Asynchronous	Returns the current board status.
cdiStopStatusMonitoring	Synchronous	Unregisters the application from receiving board status change events.
cdiUserLed	Synchronous	Sets the user LED.