On Networks N300RM User Manual - Manual (Page 14)

Hardware Setup
14
N300 WiFi ADSL2+ Modem Router (N300RM)
3. Connect the ADSL port of the modem router to the ADSL port of the filter/splitter.
If your modem router and telephone connect to the same phone line, use an ADSL
filter/splitter for every phone line in the house.
4. Add power to the modem router .
a. Connect the power adapter to the router, and plug the power adapter into an outlet.
b. Wait for the Wireless LED on the front panel to light. If no LEDs are lit, press the
Power On/Off
button on the rear panel of the modem router.