Draytek Vigor2930 Series User Manual page 46

ISDN Dial Backup
Setup
MTU
PPP Setup
IP Address
Assignment
Method(IPCP)
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 Internet Access
Setup > Dialing to a Single ISP to enter 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 i model only.
Mean maximum transmission unit of one packet. The default
value is 1442.
PPP Authentication - Select PAP only or PAP or CHAP for PPP.
Idle Timeout - Set the timeout for breaking down the Internet after
passing through the time without any action. This setting is active
only when the Active on demand option for Active Mode is
selected in WAN>> General Setup page.
Fixed IP - Usually ISP dynamically assigns IP address to you
each time you connect to it and request. In some case, your ISP
provides service to always assign you the same IP address
whenever you request. In this case, you can fill in this IP address
in the Fixed IP field. Please contact your ISP before you want to
use this function. Click Yes to use this function and type in a
fixed IP address in the box.
Fixed IP Address -Type a fixed IP address.
WAN IP Alias - If you have multiple public IP addresses and
would like to utilize them on the WAN interface, please use WAN
IP Alias. You can set up to 8 public IP addresses other than the
current one you are using. Notice that this setting is available for
WAN1 only.
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Vigor2930 Series User's Guide