D-Link DI-304 User Manual - page 45
DI-304/DI-304M ISDN Remote Router
37
Configuring ISDN Dial Backup
♦
ISDN Dial Backup Setup – 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.
♦
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.