off-hook agents is the number of the agents 1 or more sharing this DN which are off-hook. 0 means nobody, 1 means if the agent is offhook, -1 usualy means DND mode (and maybe - cannot remember if the agent is logout and is offhook or another logout mode also) for this agent as I remember.
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...