lineSecureCall
The
lineSecureCall function secures the call from any interruptions or interference that may
affect the call's media stream.
LONG lineSecureCall(
Parameters
hCall
A handle to the call to be secured. The application must be an owner of the
call. The call state of
hCall can be any state.
Return Values
Returns a positive request ID if the function will be completed
asynchronously, or a negative error number if an error has occurred. The
dwParam2 parameter of the corresponding LINE_REPLY message is zero if the function is
successful or it is a negative error number if an error has occurred. Possible
return values are:
LINEERR_INVALCALLHANDLE, LINEERR_OPERATIONUNAVAIL, LINEERR_INVALCALLSTATE,
LINEERR_OPERATIONFAILED, LINEERR_NOMEM, LINEERR_RESOURCEUNAVAIL, LINEERR_NOTOWNER,
LINEERR_UNINITIALIZED.
Remarks
A call can be secured to avoid interference. For example, in an analog
environment, call-waiting tones may destroy a fax or modem session on the original
call. The
lineSecureCall function allows an existing call to be secured. The
lineMakeCall function provides the option to secure the call from the time of call setup.
The securing of a call remains in effect for the duration of the call.
See Also
LINE_REPLY,
lineMakeCall
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