LINEFEATURE (Compact 2013)

3/26/2014

These constants list the operations that can be invoked on a line using this API.

The following table shows the LINEFEATURE constants.

Value	Description
LINEFEATURE_DEVSPECIFIC = 0x00000001	Device-specific operations can be used on the line.
LINEFEATURE_DEVSPECIFICFEAT = 0x00000002	Device-specific features can be used on the line.
LINEFEATURE_FORWARD = 0x00000004	Forwarding of all addresses can be used on the line.
LINEFEATURE_FORWARDDND = 0x00000100	The lineForward function, with an empty destination address, can be used to turn on the Do Not Disturb feature on all addresses on the line. LINEFEATURE_FORWARD will also be set. This flag is exposed only to applications that negotiate a TAPI version of 2.0 or later.
LINEFEATURE_FORWARDFWD = 0x00000080	The lineForward function can be used to forward calls on all address on the line to other numbers. LINEFEATURE_FORWARD will also be set. This flag is exposed only to applications that negotiate a TAPI version of 2.0 or later.
LINEFEATURE_MAKECALL = 0x00000008	An outgoing call can be placed on this line using an unspecified address.
LINEFEATURE_SETMEDIACONTROL = 0x00000010	Media control can be set on this line.
LINEFEATURE_SETTERMINAL = 0x00000020	Terminal modes for this line can be set.

Remarks

These constants cannot be extended. All 32 bits are reserved.

The LINEFEATURE constants are used in LINEDEVSTATUS (returned by lineGetLineDevStatus). LINEDEVSTATUS reports, for a given line, which line features can actually be invoked while the line is in the current state. An application would make this determination dynamically after line state changes, typically caused by address or call-related activities on the line.

Note

If neither of the new modified "FORWARD" bits is set in the dwLineFeatures member in LINEDEVSTATUS but the LINEFEATURE_FORWARD bit is set, then any of the forward modes can work; the service provider has simply not specified which ones.

Requirements

Header

tapi.h

See Also

Reference

TAPI Constants
lineForward
lineGetLineDevStatus
LINEDEVSTATUS