Question about Zyxel Prestige 660R Router (91004397002)

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Dsl light keeps flashing - Zyxel Prestige 660R Router (91004397002)

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Your router is not synchronized with the line. You should power cycle your router (i.e)disconnect power cable from the router waith for 30 seconds and then reconnect, check if the dsl cable is connected properly to the router, if yes remove it once and the reconnect it, this should fix the problem. Are there any electrical devices near the router that are only switched on at that time of day and then switched off again in the morning. What i'm thinking is that you are experiencing REI or Repetitive Electronic Interference. This is caused by EMP emmisions form devices nearby. Have you had anything fitted recently that may be hardwired into you master socket, this will bypass your filter and cause interference on the line. The only other thing I can think of is that there maybe some engineering works going on at the exchange or on the line.

Posted on Nov 21, 2007


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Posted on Jan 02, 2017


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Could be any of -

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Dsl light flashes red constantly

Whenever your dsl light on the 2wire modem turns red,it only means that there is a problem with the dsl connection to the modem. Here are some ways on how you can isolate the problem

1. check if your modem is properly connected to the phone jack by unplugging and replugging you phone cable
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hopefully you haev installed the software first on yoy computer>
turn off the computer. connect the phone line one end to the ethernet port on your computer and the other end to one of the LAN port on the x6.
power up the (power cube shipped with the X6), the Pwr and the WLAN should come on and become steady, the LINK light should blink,
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please rate the answer if it solved your porblem.
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you have the DSL filters plugged into all your telephones, but NOT plugged into the DSL modem?

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1 Answer

DSL light flashing

Not-sync'd = No dsl signal.
First thing first- Unplug your modem for 10 seconds or so. Then see if your lights all come back on.

If you have phone service with your dsl, make sure you have dial tone in the phone jack you're trying to use. If not, then try a different phone jack. If you still can't get your dsl to work, then call the phone company and have them come out and fix your dsl.

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