For US Region, UC320W Configuration Utility allows you to select either 7 digit or 10 digit dial plan. That should be the only thing you need to configure ... all the rest is handled automatically and is not customizable. The default configuration should meet all your North American Numbering Plan needs ... 7 digit, 10 digit, 11 digit, n11, operator, international access code etc. If you have specific needs beyond that please communicate them by opening up a case with the Small Business Support Center.
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...