This section contains an alphabetic list of the available line device functions in the Telephony SPI. The information for each function includes the following:
Note The actual states in which a function can be performed may be limited by the capabilities of the service provider. Service providers must set the dwCallFeatures member in the LINECALLSTATUS structure, the dwAddressFeatures member in the LINEADDRESSSTATUS structure, and the dwLineFeatures member in the LINEDEVSTATUS structure to indicate to applications whether or not a function is permitted at that point in time.