TSPI_lineSwapHold function (tspi.h)
The TSPI_lineSwapHold function swaps the specified active call with the specified call on consultation hold.
Syntax
LONG TSPIAPI TSPI_lineSwapHold(
DRV_REQUESTID dwRequestID,
HDRVCALL hdActiveCall,
HDRVCALL hdHeldCall
);
Parameters
dwRequestID
The identifier of the asynchronous request.
hdActiveCall
The handle to the call to be swapped with the call on consultation hold. The call state of hdActiveCall can be connected.
hdHeldCall
The handle to the consultation call. The call state of hdHeldCall can be onHoldPendingTransfer, onHoldPendingConference, or onHold.
Return value
Returns dwRequestID, or an error number if an error occurs. The lResult actual parameter of the corresponding ASYNC_COMPLETION is zero if the function succeeds, or an error number if an error occurs. Possible return values are as follows:
LINEERR_INVALCALLHANDLE, LINEERR_OPERATIONUNAVAIL, LINEERR_INVALCALLSTATE, LINEERR_OPERATIONFAILED, LINEERR_NOMEM, LINEERR_RESOURCEUNAVAIL.
Remarks
The service provider must send LINE_CALLSTATE messages for the call transitions.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | tspi.h |