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LINEDEVCAPFLAGS_ Constants
The LINEDEVCAPFLAGS_ bit-flag constants are a collection of Booleans
describing various line device capabilities.
LINEDEVCAPFLAGS_CROSSADDRCONF
Specifies whether calls on different addresses on this line can be
conferenced.
LINEDEVCAPFLAGS_HIGHLEVCOMP
Specifies whether high-level compatibility information elements are supported
on this line.
LINEDEVCAPFLAGS_LOWLEVCOMP
Specifies whether low-level compatibility information elements are supported
on this line.
LINEDEVCAPFLAGS_MEDIACONTROL
Specifies whether media-control operations are available for calls at this
line.
LINEDEVCAPFLAGS_MULTIPLEADDR
Specifies whether lineMakeCall or lineDial are able to deal with multiple addresses at once (as for inverse
multiplexing).
LINEDEVCAPFLAGS_CLOSEDROP
Specifies what happens when an open line is closed while the application has
calls active on the line. If TRUE, the service provider drops (clears) all
active calls on the line when the last application that has opened the line closes
it with lineClose. If FALSE, the service provider does not drop active calls in such cases.
Instead, the calls remain active and under control of external devices. A service
provider typically sets this bit to FALSE if there is some other device that
can keep the call alive, for example, if an analog line has the computer and
phoneset both connect directly to them in a party-line configuration, the offhook
phone will automatically keep the call active even after the computer powers
down.
Applications should check this flag to determine whether to warn the user
(with an OK/Cancel dialog box) that active calls will be lost.
LINEDEVCAPFLAGS_DIALBILLING
LINEDEVCAPFLAGS_DIALQUIET
LINEDEVCAPFLAGS_DIALDIALTONE
These flags indicate whether the "$", "@", or "W" dialable string modifier is
supported for a given line device. It is TRUE if the modifier is supported;
otherwise, FALSE. The "?" (prompt user to continue dialing) is never supported by
a line device. These flags allow an application to determine up front which
modifiers would result in the generation of a LINEERR. The application has the
choice of pre-scanning dialable strings for unsupported characters or of passing
the "raw" string from lineTranslateAddress directly to the provider as part of functions such as lineMakeCall or lineDial and let the function generate an error to tell it which unsupported modifier
occurs first in the string.
No extensibility. All 32 bits are reserved.
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