The LINK light should blink during the modem's startup sequence and then remain on (Green on the X3 & X4, Red on the X5). If it does not blink (it may take up to 1 - 3 minutes) turn the modem off, wait 5 seconds, and turn the modem on. If the LINK light is still not blinking (which means the modem is not performing its startup sequence), try performing a Hard Reset .
If the problem continues then the modem will need to be serviced. For Technical Support and Warranty Service information, click Customer Support on the main menu of the Zoom ADSL CD.
If the LINK light continues to blink it is an indication that the modem has not synched with your Provider. Please refer to FAQ #328