Draytek Vigor2820 Series User Manual page 59

ISDN Dial Backup
Setup
WAN Connection
Detection
RIP Protocol
Bridge Mode
WAN IP Network
Settings
VCI - Type in the value provided by ISP.
Modulation –Default setting is Multimode. Choose the one that
fits the requirement of your router.
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.
Always On - If the broadband connection is no longer available,
the backup line will be activated automatically and always on until
the broadband connection is restored. We recommend you to enable
this feature if you host a web server for your customers' access.
This setting is available for s 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 to
type IP address in this field for pinging.
TTL (Time to Live) – Displays value for your reference. TTL
value is set by telnet command.
Routing Information Protocol is abbreviated as RIP（RFC1058）
specifying how routers exchange routing tables information. Click
Enable RIP for activating this function.
If you choose Bridged IP as the protocol, you can check this box to
invoke the function. The router will work as a bridge modem.
This group allows you to obtain an IP address automatically and
allows you type in IP address manually.
Obtain an IP address automatically – Click this button to obtain
the IP address automatically.
Router Name – Type in the router name provided by ISP.
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Vigor2820 Series User's Guide