User`s manual

VoIP/(802.11g) ADSL2+ (VPN) Firewall Router
Chapter 4: Configuration
130
Mission-critical application
Mostly the VPN connection is mission-critical application for doing data exchange between head and
branch office.
The mission-critical application must be sent out smoothly without any dropping. Set priority as high level
for preventing any other applications to saturate the bandwidth.
Voice application
Voice is latency-sensitive application. Most VoIP devices use SIP protocol and the port number will be
assigned by SIP module automatically. It is best to assign a fixed IP to the VoIP device, and use this fixed
IP address for handling the VoIP packets as high priority.
Above settings will help to improve quality of your VoIP service when traffic is full loading.
Restricted Application
Some companies setup FTP servers for customer downloading, or home users sharing their files by using
FTP.
The above settings help to limit utilization of upstream FTP. Time schedule may also help you to limit
utilization at particular times, or when VoIP is in use within the Router.