For starters when the broadband light on your at t router flashes red it might be a strong indication of an issue with the cables connected with your modem.
At and t broadband service red light.
Flashing green and red.
I reset it still flashing red.
If the dsl modem keeps giving red dsl light signal it means there is a problem with the modem.
Red lights indicate some type of hardware failure so you should note and troubleshoot some of the behaviors of your wi fi gateway lights.
Confirm the power broadband and service lights on your gateway are green.
The broadband connection is up and active.
I checked my phone no internet there.
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Today the broadband light decided to go red and the wifi is either sometimes connecting with internet speeds of 50mbps or not connecting at all.
Red light is the sign that the dsl modem is unable to detect centurylink s internet equipment although you have to connect the line.
It s now up to you to find effective ways of resolving the flashing red light and eventually get back online.
Created may 10 2010.
Att uverse modem broadband light blinking red.
The issue was classified by gethuman canaless at the time as a cancel service problem and was later reported to be fixed on november 21st 2017.
Other than that the problem might lie within your physical network.
If this video helped you at all please leave.
This has been a reoccuring problem so i already knew what to do.
On november 11th 2017 gethuman canaless reported to gethuman that they were having an issue with at t u verse and needed to get in touch.
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The gateway has obtained an ip address from our network.
I reset it again still flashing red.
I checked to see if the dsl cable was secure it was and the light is still blinking.
Yesterday i was on the computer and the internet suddenly stopped working.
If your lights aren t green you may have a problem getting a signal or your gateway may be having a.
Wi fi gateway light indicators.
I checked to modem the broadband was flashing red.
The gateway can t connect to our network.
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The gateway is trying to obtain.