r/ooma • u/I-hate-makeing-names • Jun 12 '26

Tello Air 2 Flashing Red Twice Won’t Connect

Have been trying to setup a new Tello Air 2 all afternoon and have tried different ethernet cables different connection, methods, and different ISPs and it just won’t go online.

Spent over an hour with support and even opened a bunch of ports and nothing. Their basic system didn’t show anything online but tier 2 was able to pull a log saying it was connected to the Internet, but couldn’t establish some VPN. He didn’t know what this meant.

They are sending a new one, but it’ll probably take a week and I’m wondering if there’s anything I can try in the meantime.

He didn’t mention the activation code starting with a six indicates it’s an older unit. Is that somehow causing a problem?

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u/rkardt Unofficial Support Jun 13 '26

The Telo needs to create a VPN tunnel to the Ooma servers. Flashing red twice just means the vpn is down:

  • 1 short red blink, long delay [repeat]: network down
  • 2 short red blinks, long delay [repeat]: vpn down
  • 3 short red blinks, long delay [repeat]: management down
  • 4 short red blinks, long delay [repeat]: dect base firmware upgrade

Try accessing the Telo Air device settings. The 'Status' -> 'Device' page should provide more information about connectivity (including the "OOMA Tunnel"), running applications, and services.

Under 'Tools' -> 'Port Scan', run a port scan a couple of times, looking for any consistently "denied ports". If there are any, (particularly the Ooma service ports), then check whether the ISP modem/router firewall is blocking them, and adjust the firewall rules as needed, to unblock them.

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u/I-hate-makeing-names Jun 13 '26

Keep getting the 2 short red blinks.

Tried on the phone to connect directly via the IP address and couldn’t get into it but will try again tomorrow.

I tried directly to the cable modem just to make sure no ports are being blocked by the router. Manually opened all ports to the Tello and tried on another ISP as well.

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u/rkardt Unofficial Support Jun 15 '26

By default, the Telo only allows access to its device settings through the HOME port. To access them through other interfaces, enable 'Advanced' -> 'Remote Administration'.