The Cisco Unified CallManager Version 4.2 has been retired and is no longer supported.
End-of-Sale Date: 2008-05-15
End-of-Support Date: 2011-05-17
Cisco's End-of-Life Policy
You can view a listing of available Cisco Unified Communications Manager (CallManager) offerings that best meet your specific needs
If you want support information for the Cisco Unified CallManager Version 4.2 documentation, it may be available through Cisco.com Search or in the Cisco Community