But It's a voip-device, probably without real security in mind. So I would never place it directly onto the internet without a dedicated firewall. My UC320 is sitting in the DMZ, but not with a SIP-trunk to the internet because I'm using the Mediatrix gateway for BRI.
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...