Can I suggest that you connect the power pack to the phone, boot it up and see if it comes online, and if it does, then use the menu settings and factory reset it, then connect it back up to the PoE switch and let the UC-500 take over from there.
Let us know how you go
David Trad. davidtradconsultinggmail.com
**When you rate a persons post, you are indicating a thank you or that it helped, but at the same time you are also helping to maintain the community spirit - You don't have to rate posts and you wont be looked down upon :) *
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...