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Introduction
1
1. Introduction
The ITG is a VoIP gateway integrated with a Network Address Translation (NAT) router. It is equipped with
two IP interfaces, one for connecting to internal network (hereafter called LAN), the other for connecting to
external network (hereafter called WAN). The ITG performs NAPT for host in LAN interface, allowing
multiple hosts in the LAN interface to share a single IP address.
The ITG has a built-in command line interpreter and provides users a Command Line Interface (CLI). You
can configure ITG by entering commands from the CLI.
You can access the CLI from a VT-100 terminal or terminal emulator connected through a Telnet session.
Command Help
Help for commands is provided by the CLI. Type help to see a list of the top-level commands.
On most cases, if you enter a command using the wrong number of arguments or
inappropriate arguments, the CLI will give further usage.