Internet connection always interupted - D-Link DI-604 4-Port Cable/DSL Router (DI-604) Broadband (di-604 (dont quote)) Bridge

•Your Windows computers that are connected to the LAN ports indicate "Network Cable Unplugged." If you are using another computer or network device, you will get an indication that the Link has been momentarily broken. (Note: Wireless clients may not detect the interruption.)

•If you are using a DI-5xx/6xx/7xx device that supports NATLIST.TXT (not all do), you can get the uptime by using your browser to retrieve http://192.168.0.1/NATLIST.TXT. Look for the line that says "curr time : 369360" and divide that number by 60. The result is the number of minutes since the last reboot or power up.

•The DI-5xx/6xx/7xx router's log has been reset. Over time, the router's log should grow if the router is not rebooting. The last page will have the oldest entries. If your log is shorter than the maximum, the last entry will be the time your router last restarted. (The maximum log size is 20 pages long on many D-Link routers.)

•The lights flash in a particular pattern that you can learn. Go to Tools / Misc. On that page, one item should be "Reboot." Click that button as you are carefully watching the lights on the router. You can use this method to learn the pattern of the lights when the router is rebooting.
Thanks
With regards priya