Thanks for your Reply!
I already had tried all that , same error.
The installation crashed after few seconds I run the Setup , I grabbed this from the installation logs :
An unexpected error occured while installing Symantec Private Branch Exchange. The error desfcription follows:
Error Number : 451
Error Description : Object not a collection
Source : Microsoft VBScript runtime error
Method Name : noteDepSvcsWeStop
Operation : Executing query to get dependent service list