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Tutor

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4 Messages

Sun, Nov 9, 2014 4:11 PM

3G microcell "network" light blinking red overnight

I have an older microcell, white model 151 (approximately 5 years old).

 

Every night for the last week or so the microcell as been going offline and when I get up in the morning the "network" light (with the 5 signal-strength bars) is slowly flashing red. The other lights (power, ethernet, and GPS) are still solid green.

 

After power cycling the microcell, all the lights return to normal (solid) and I can make & receive calls without a problem, until the next morning.

 

Is this a sign that the microcell is dying? Is there a problem with my local network configuration that's blocking the Microcell's communication? I did get a new router a few weeks ago, but I don't think the Microcell issues started right away after that. I checked the Microcell network guide and I believe my router is configured correctly (all ports are allowed, etc). When I power cycle the Microcell it seems to link to AT&T just fine.

 

I haven't been able to figure out if the Microcell is going off after X number of hours, or if it happens at the same time every night.

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Official Solution

OttoPylot

ACE - Expert

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13K Messages

6 years ago

AT&T does perform maintenance and/or updates late at night every now and then. The MicroCell usually has to reboot after this, especially is there is an update. Sort of like rebooting your computer after an update. If the update didn't install correctly,when the MicroCell attempts to reboot, it can't, and it "thinks" there is a hardware failure which is usually indicated by a blinking red 3G light.

 

I would try a hard reset. That puts the MicroCell back into default status and it has to perform the Initial Activation process all over again, part of which is checking for new updates.

 

Disable the power to the MicroCell. Take a paperclip and press in on the reset button which is located on the back of the MicroCell. Keep holding in the button and restore power. Hold in the button for about 30 seconds and then release it. Let us know if that fixes it.

 

Yea, it is possible that your MicroCell has also died. They don't last forever but let's not give it last rites just yet.

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*I am not an AT&T employee, and the views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.

Accepted Solution

Official Solution

Tutor

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2 Messages

6 years ago

I spent two days working on this issue of the blinking Network (Top 3G signal strength indicator).

I was told that my Arris Cable modem was the problem. Not so.

 

I then went into my router and changed VPN settings from "Disable" to "Enable"

 

PPTP Pass-through:Enable       Disable
L2TP Pass-through:Enable       Disable
IPSEC Pass-through:Enable       Disable

 

After making these changes, everything worked. Do a google search on L2TP or PPTP and notice that they refer to the ports that the Micro-Cell needs to have open, like 443 (provisioning), 4500 (IPsec) etc. Enabling these VPN settings on my router fixed the problem.  I had set them to "Disable" a while ago not realizing that they would impact anything I was using. The MicroCell however needs these ports to be open.

 

Maybe this will work for others with Setup issues.  The ATT tech support said "Arris Cable Modem" was the problem, but in fact it was my router VPN settings.

Avedis53

Professor

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2.2K Messages

6 years ago

Definitely try Otto's suggestion concerning the hard reset and post back with your results.

___________________________________________________________

MicroCell Technical Guide by Otto Pylot


I am not an AT&T employee.

Tutor

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4 Messages

6 years ago

Yesterday I "hard reset" the Microcell as you suggested, and this morning it was still on... so I'm cautiously optimistic. (Of course, since there is no user interface for the device I cannot tell what was the problem or whether it finally updated itself). I will wait a few more days before declaring victory, but I think this is promising. Thanks for your help.

Avedis53

Professor

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2.2K Messages

6 years ago

Please let us know if after several days your problem has been resolved.  It will help us to provide future assistance to others.

 

 

___________________________________________________________

MicroCell Technical Guide by Otto Pylot


I am not an AT&T employee.

OttoPylot

ACE - Expert

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13K Messages

6 years ago

AT&T never discloses when updates are pushed or what they are for, and they don't always end up with the flashing red 3G if a reset is needed. You've probably received quite a few updates for better network connectivity, maintenance, etc and never realized it. But yeah, let us know in a few days if you're still up and running solid green.

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*I am not an AT&T employee, and the views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.

Tutor

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5 Messages

6 years ago

I'm having the same problem. ATT sent me a new microcell, same problem. Flashing red today. I've hard reset. I've done everything I could find to do and it will not stop. I have to unplug and replug everyday in order for it to work.

Avedis53

Professor

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2.2K Messages

6 years ago

@fatemiafuson 

 

Please keep any future posts in the other thread you started so we can keep things organized and can better track responses. 

___________________________________________________________

MicroCell Technical Guide by Otto Pylot


I am not an AT&T employee.

Tutor

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4 Messages

6 years ago

1 week later and the Microcell is still online; I think I'm all set. Thanks for the help!

Avedis53

Professor

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2.2K Messages

6 years ago

Glad to hear that your Mcell is performing to your satisfaction!  If you have any issues come up, you know where to find us.

___________________________________________________________

MicroCell Technical Guide by Otto Pylot


I am not an AT&T employee.

OttoPylot

ACE - Expert

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13K Messages

6 years ago

Whoo Hoo! Another satisfied customer.

Award for Community Excellence 2020 Achiever*
*I am not an AT&T employee, and the views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Avedis53

Professor

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2.2K Messages

6 years ago

Interesting.  Not all routers have those settings available to be enabled/disabled.  Mine does not.  I am curious though if you tried enabling those settings one at a time to see if just one of them will cure the problem.

___________________________________________________________

MicroCell Technical Guide by Otto Pylot


I am not an AT&T employee.

OttoPylot

ACE - Expert

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13K Messages

6 years ago

@Jeff92677 - that is very interesting. We have had issues with Arris modems in the past but maybe it was how the router was configured and not necessarily the modem, but we usually do not get a whole lot of detailed information from posters. Routers are becoming more and more sophisticated, and cheaper, so not all of them have the same depth of configuration options. What router do you have btw?

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*I am not an AT&T employee, and the views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.

Contributor

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2 Messages

6 years ago

I am having the exact same problem. Every morning I wake up to "no service" on my iPhone 6+. I did a hard reset on the microcell which did not help. Since my microcell has been in service for about 2 1/2 years (it's one of the white and orange models) I figured maybe it was just starting to quit so I purchased a replacement (same model.) I set it up yesterday and this morning woke up to the red flashing light and no service. Nothing about the rest of my network has changed. I'm using a Motorola cable modem connected to Comcast with an Apple Time Capsule as my wireless router. The microcell is connected to an Apple Airport Express which connects to the Time Capsule wirelessly. This set up has worked fine for the past two and half years. Every now and then the microcell would lose connection but it's been every night for the past two weeks now.
OttoPylot

ACE - Expert

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13K Messages

6 years ago

A red flashing 3G light is either indicative of a hardware failure or an update that was received and unit didn't reset itself properly and it "thinks" it's broken. Being as you have a new MicroCell it's more than likely the update process has been interrupted somehow. A brand new MicroCell will go thru the Initial Activation phase and update itself. I would either try to do a hard reset on the MicroCell to clear out the memory and registers or try to activate it directly to the router first, and then move it to the Airport Express. It could be that the AE connecton to the TimeCapsule is where it's starting to fail now. I know it worked before but you could've been on the minimal edge of connectivity (lag, interference, etc) and something has changed. If you can connect bypassing the AE, then that's probably your answer.

 

The most reliable connection for the MicroCell is a direct connection to the router/modem. Connecting to an AE and then to a router wirelessly can, and does, work for a lot of people but you are introducing a wireless component so anything can happen.

Award for Community Excellence 2020 Achiever*
*I am not an AT&T employee, and the views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.

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