The PHONEHOOKSWITCHDEV_ bit-flag constants describe various audio I/O devices
each with its own hookswitch controllable from the computer.
This is the ubiquitous, handheld, ear- and mouthpiece.
This is a built-in loudspeaker and microphone. This could also be an
externally connected adjunct speaker to the telephone set.
This is a headset connected to the phone set.
No extensibility. All 32 bits are reserved.
These constants are used in the PHONECAPS
data structure to indicate the hookswitch device capabilities of a phone
device. The PHONESTATUS
structure reports the state of the phone's hookswitch devices. The function phoneSetHookSwitch
use it as a parameter to select the phone's I/O device.
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