Draytek Vigor2820 Series User Manual page 54

For static IP mode, you usually receive a fixed public IP address or a public subnet, namely
multiple public IP addresses from your DSL or Cable ISP service providers. In most cases, a
Cable service provider will offer a fixed public IP, while a DSL service provider will offer a
public subnet. If you have a public subnet, you could assign an IP address or many IP
address to the WAN interface.
To use static or dynamic IP as the accessing protocol of the Internet, select Static or
Dynamic IP mode. The following web page will appear.
Enable/ Disable
ISDN Dial Backup
Setup
WAN Connection
Detection
46
Click Enable for activating this function. If you click Disable,
this function will be closed and all the settings that you adjusted
in this page will be invalid.
This setting is available for the routers supporting ISDN function
only. Before utilizing the ISDN dial backup feature, you must
create a dial backup profile first. Please click ISDN > Dialing to
a Single ISP to create the backup profile.
None - Disable the backup function.
Packet Trigger -The backup line is not on until a packet from a
local host triggers the router to establish a connection.
This setting is available for n model only.
Such function allows you to verify whether network connection is
alive or not through ARP Detect or Ping Detect.
Mode – Choose ARP Detect or Ping Detect for the system to
execute for WAN detection.
Ping IP – If you choose Ping Detect as detection mode, you have
Vigor2820 Series User's Guide