D-Link DI-304M - Manual (Page 46)

DI-304/DI-304M ISDN Remote Router
♦ Dial Backup Mode – There are three options:
◊ None - Disable the backup function.
◊ Packet Trigger - The backup line is disconnected 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 automatically connect and stay Always On until
the broadband connection is recovered.
To start ISDN Dial Backup function, you must create a dial backup profile. Click
Internet Access Setup
→ Dialing to a Single ISP to setup the backup profile.
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