I tried upgrading my IOS without moving to default and it caused an angry mess of nonsense. I then reinstalled to factory default and ran everything through the wizard and reconfigured. There was nothing I could do to get the old config to work. As of this moment Im going to move it back so I can move forward, due to the fact that even with a fresh start this OS won't take my config through CCA to allow me to use the BACD scripts. My thoughts are that it's a bummer of an OS. I'd get your OS from the download site at Cisco.com. I was looking for the 8.0.1 from this site as well and thought it was what I should run with, but I'm going to move back to get things going.
Configure Multicast Paging on the Cisco IP Phone 7800 Series or 8800 Series Multiplatform Phone
The Cisco IP Phone 7800 and 8800 Series Multiplatform Phones provide voice communication over an Internet Protocol (IP) network...
Add Call Park on a Cisco 7800 or 8800 Series Multiplatform Phone Key Expansion Module
Call park allows the user of the phone to put an incoming call on hold so that the call can be retrieved on another phone. A call is park...