Panasonic KX-NS300CN Pc Programming Manual page 267

9.14 PBX Configuration—[1-1] Configuration—Slot—V-IPEXT—Port Property
Phone Location
Specifies the type of extension connected to the port.
Value Range
Local: The extension is located on the same network as the PBX (standard configuration).
Remote (MRG): The extension is accessing the PBX remotely (use Media Relay Gateway).
Feature Guide References
5.2.1 IP Proprietary Telephone (IP-PT)
PC Programming Manual 267