The LINECALLFEATURE_ constants list the operations that can be invoked on a
call using this API.
Each of the LINECALLFEATURE_ values correspond to the TAPI operations with the
same name. The list is not repeated here.
No extensibility. All 32 bits are reserved.
This constant is used both in LINEADDRESSCAPS
(returned by lineGetAddressCaps
) and in LINECALLSTATUS
(returned by lineGetCallStatus
reports the availability of the call features on the specified address. An
application would use this information when it initializes to determine what it
may be able to do later when calls exist. For the specified call, LINECALLSTATUS
reports which call features can be invoked while the call is in the current
call state. The latter takes call privileges into account. An application would
make this determination dynamically, after call state changes.
The LINECALLFEATURE_RELEASEUSERUSER value is new. No backward compatibility
considerations. A service provider may elect to return this value in relevant
fields (in LINEADDRESSCAPS
) even when older API versions have been negotiated on the line device.
The LINECALLFEATURE_SETTREATMENT, LINECALLFEATURE_SETQOS, and
LINECALLFEATURE_SETCALLDATA constants are available for API versions 0x00020000 and greater.
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