D-Link DI-206 - Manual (Page 168)

DI-206 ISDN Remote Router
156 Appendix A -
Troubleshooting
Problems With the ISDN Line
If you are having problems making a connection through the ISDN line,
try performing a Loopback Test (in the console program choose
System Maintenance, Diagnostic, Loopback Test). If the loopback
test succeeds then your physical connection to your phone company is
ok and the problem probably lies in your ISDN settings (located in the
console program under Interface Configuration, ISDN). Alternatively,
the problem could be with the router or computer you are trying to call.
Problems with the LAN Interface
Can’t PING any station on the LAN
1. Check the LAN LED on the front panel of your router. If it is on,
then the link is up. If it is off, then check the cables connecting the
router to your LAN.
2. Make sure the LAN is enabled in the Interface Configuration,
LAN submenu of the console program.
3. Verify with your network administrator that the IP address and the
IP subnet mask configured in the Network Configuration, IP
Configuration, IP Stack Configuration, LAN submenu of the
console program are valid for that LAN.
4. Check the physical Ethernet cable, and make sure the connections
on the router and the hub or station are secure.
5. Check to make sure an end station IS NOT connected to the Uplink
port or that a hub IS connected to the Uplink port using straight-
through cables.