P-2302R Series VoIP Station Gateway User's Guide

Table Of Contents
P-2302R Series User’s Guide
Chapter 1 Introducing the Prestige 38
Network Address Translation (NAT)
Network Address Translation (NAT) allows the translation of an Internet protocol address
used within one network (for example a private IP address used in a local network) to a
different IP address known within another network (for example a public IP address used on
the Internet).
Universal Plug and Play (UPnP)
Using the standard TCP/IP protocol, the Prestige and other UPnP enabled devices can
dynamically join a network, obtain an IP address and convey its capabilities to other devices
on the network.
DHCP (Dynamic Host Configuration Protocol)
DHCP (Dynamic Host Configuration Protocol) allows the individual client computers to
obtain the TCP/IP configuration at start-up from a centralized DHCP server. The Prestige has
built-in DHCP server capability, enabled by default, which means it can assign IP addresses,
an IP default gateway and DNS servers to all systems that support the DHCP client. The
Prestige can also act as a surrogate DHCP server where it relays IP address assignment from
the actual real DHCP server to the clients.
Port Forwarding
Use this feature to forward incoming service requests to a server on your local network. You
may enter a single port number or a range of port numbers to be forwarded, and the local IP
address of the desired server.
Dynamic DNS Support
With Dynamic DNS (Domain Name System) support, you can have a static hostname alias for
a dynamic IP address, allowing the host to be more easily accessible from various locations on
the Internet. You must register for this service with a Dynamic DNS service provider.
IP Multicast
Deliver IP packets to a specific group of hosts using IP multicast. IGMP (Internet Group
Management Protocol) is the protocol used to support multicast groups. The latest version is
version 2 (see RFC 2236); the Prestige supports both versions 1 and 2.
IP Alias
IP Alias allows you to partition a physical network into logical networks over the same
Ethernet interface. The Prestige supports three logical LAN interfaces via its single physical
Ethernet LAN interface with the Prestige itself as the gateway for each network.