Cisco Cisco Computer Telephony Integration Option 9.0 Developer's Guide

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CTI OS Developer’s Guide for Cisco ICM/IPCC Enterprise & Hosted Editions
Cisco CTI OS Release 7.2(1)
Chapter 10      Call Object
Methods
Return Value
Default CTI OS return values. See 
Remarks
In the case of a multi-party Conference call, calling Clear() will result in all of the parties to the call 
being hung up. (If this is not the desired behavior, see the ClearConnection method.) Under certain 
switches the Clear request will be made via a call whose status is LCS_CONNECT or LCS_INITIATE 
or it will fail. Many other switches will allow the Clear method to be called via a call whose status is 
LCS_ALERTING or LCS_HOLD. It may never be made via a call whose status is LCS_NULL 
indicating that it has already been cleared. 
The following events will be received  if this request is successful: 
  •
OnClearCallConf event
  •
OnCallCleared event
The following events will be received  if this request fails: 
  •
OnControlFailureConf event
Note
The Clear method is not supported on IPCC. Use of the Clear method with IPCC will result in loss of 
third-party call control. To avoid this error, applications should use the ClearConnection method instead 
of Clear to hang up a call.
ClearConnection
The ClearConnection method clears a single connection from a call. If there are only two parties to the 
call, this effectively clears the call, however for a multi-party conference call, only the one connection 
is dropped.
Syntax
C++:
int ClearConnection()
int ClearConnection(Arguments & reserved_args);
COM:
HRESULT ClearConnection (/*[in,optional]*/  IArguments *reserved_args,    (/*[out, 
retval]*/ int * errorcode)
VB:
ClearConnection([reserved_args As IArguments]) As Long
Java:
int ClearConnection(Arguments rArgs);
.NET:
CilError ClearConnection(Arguments args);
Parameters
reserved_args
Not currently used, reserved for future use.
errorcode
An output parameter (return parameter in VB) that contains an error code from 
 in