internal static extern int cstaMonitorCallsViaDevice(IntPtr acsHandle, uint invokeID, ref DeviceID_t deviceID, ref CSTAMonitorFilter_t monitorFilter, ref PrivateData_t privateData);
internal static extern int cstaHoldCall(IntPtr acsHandle, uint invokeID, ref ConnectionID_t activeCall, bool reservation, ref PrivateData_t privateData);
internal static extern int cstaMakePredictiveCall(IntPtr acsHandle, uint invokeID, ref DeviceID_t callingDevice, ref DeviceID_t calledDevice, AllocationState_t allocationState, ref PrivateData_t privateData);
internal static extern int cstaCallCompletion(IntPtr acsHandle, uint invokeID, Feature_t feature, ref ConnectionID_t call, ref PrivateData_t privateData);
internal static extern int cstaConferenceCall(IntPtr acsHandle, uint invokeID, ref ConnectionID_t heldCall, ref ConnectionID_t activeCall, ref PrivateData_t privateData);
internal static extern int cstaSysStatEvent(IntPtr acsHandle, SystemStatus_t systemStatus, ref PrivateData_t privateData);
internal static extern int cstaAlternateCall(IntPtr acsHandle, uint invokeID, ref ConnectionID_t activeCall, ref ConnectionID_t otherCall, ref PrivateData_t privateData);
internal static extern int cstaRouteRegisterCancel(IntPtr acsHandle, uint invokeID, int routeRegisterReqID, ref PrivateData_t privateData);
internal static extern int acsCloseStream(IntPtr acsHandle, uint invokeID, ref PrivateData_t priv);
internal static extern int cstaSnapshotDeviceReq(IntPtr acsHandle, uint invokeID, ref DeviceID_t snapshotObj, ref PrivateData_t privateData);
internal static extern int cstaRouteRegisterReq(IntPtr acsHandle, uint invokeID, ref DeviceID_t routingDevice, ref PrivateData_t privateData);
internal static extern int cstaSnapshotCallReq(IntPtr acsHandle, uint invokeID, ref ConnectionID_t snapshotObj, ref PrivateData_t privateData);
internal static extern int cstaMonitorStop(IntPtr acsHandle, uint invokeID, int monitorCrossRefID, ref PrivateData_t privateData);
internal static extern int cstaChangeMonitorFilter(IntPtr acsHandle, uint invokeID, int monitorCrossRefID, ref CSTAMonitorFilter_t filterlist, ref PrivateData_t privateData);
internal static extern int cstaChangeSysStatFilter(IntPtr acsHandle, uint invokeID, byte statusFilter, ref PrivateData_t privateData);
internal static extern int cstaRouteSelectInv(IntPtr acsHandle, uint invokeID, int routeRegisterReqID, int routingCrossRefID, ref DeviceID_t routeSelected, short remainRetry, ref SetUpValues_t setupInformation, bool routeUsedReq, ref PrivateData_t privateData);
internal static extern int cstaSysStatReqConf(IntPtr acsHandle, uint invokeID, SystemStatus_t systemStatus, ref PrivateData_t privateData);
internal static extern int cstaRouteEndInv(IntPtr acsHandle, uint invokeID, int routeRegisterReqID, int routingCrossRefID, CSTAUniversalFailure_t errorValue, ref PrivateData_t privateData);
internal static extern int acsGetEventBlock(IntPtr acsHandle, ref EventBuf_t eventBuf, ref ushort eventBufSize, ref PrivateData_t privData, ref ushort numEvents);
internal static extern int cstaEscapeService(IntPtr acsHandle, uint invokeID, ref PrivateData_t privateData);
internal static extern int cstaAnswerCall(IntPtr acsHandle, uint invokeID, ref ConnectionID_t alertingCall, ref PrivateData_t privateData);
internal static extern int cstaEscapeServiceConf(IntPtr acsHandle, uint invokeID, CSTAUniversalFailure_t error, ref PrivateData_t privateData);
internal static extern int cstaClearConnection(IntPtr acsHandle, uint invokeID, ref ConnectionID_t call, ref PrivateData_t privateData);
internal static extern int cstaSendPrivateEvent(IntPtr acsHandle, ref PrivateData_t privateData);
internal static extern int cstaConsultationCall(IntPtr acsHandle, uint invokeID, ref ConnectionID_t activeCall, ref DeviceID_t calledDevice, ref PrivateData_t privateData);
internal static extern int acsAbortStream(IntPtr acsHandle, ref PrivateData_t priv);
internal static extern int cstaMakeCall(IntPtr acsHandle, uint invokeID, ref DeviceID_t callingDevice, ref DeviceID_t calledDevice, ref PrivateData_t privateData);
internal static extern int cstaSysStatStop(IntPtr acsHandle, uint invokeID, ref PrivateData_t privateData);
internal static extern int cstaPickupCall(IntPtr acsHandle, uint invokeID, ref ConnectionID_t deflectCall, ref DeviceID_t calledDevice, ref PrivateData_t privateData);
internal static extern int acsOpenStream(ref IntPtr acsHandle, InvokeIDType_t invokeIDType, uint invokeID, StreamType_t streamType, ref ServerID_t serverID, ref LoginID_t loginID, ref Passwd_t passwd, ref AppName_t applicationName, Level_t acsLevelReq, ref Version_t apiVer, ushort sendQSize, ushort sendExtraBufs, ushort recvQSize, ushort recvExtraBufs, ref PrivateData_t privateData);
