topic Re: Full Fibre + Phone Line Down - Router Boot Loop? Unable to Reach Support (CV3 Area) in Full Fibre

Full Fibre + Phone Line Down - Router Boot Loop? Unable to Reach Support (CV3 Area)

JeanC_2025 — Wed, 17 Dec 2025 19:26:09 GMT

Hello,

Our Full Fibre broadband and TalkTalk landline have both stopped working, and I've been unable to get through to a human agent despite multiple attempts over several days/eves. We're in the Coventry CV3 area.

Fault Symptoms:

Router: Orange light flashing in a repeating cycle - approximately 30 regular flashes, then one longer flash (around 2 seconds on), followed by roughly 2 seconds off, then the cycle repeats. This appears to be a 'boot loop'.
ONT (wall box): All lights solid green at all times. The Ethernet light briefly goes off only during the router's "off" phase in the cycle (expected, as the router stops responding during restart).
Phone: Dial tone present on the handset, but incoming callers cannot reach us - no ringing, calls don't connect.

Troubleshooting Completed:

Multiple 20-minute router power-off resets - no change
Replaced the Ethernet cable between ONT and router WAN port - no change
Power cycled the ONT with router disconnected - no change
Line test via My Account - returns error saying test unavailable
Called support multiple times - automated system loops back to reset process when no agents are available

Assessment:

The ONT lights being solid green seem to suggest the Openreach fibre connection is healthy. The issue appears to be either a faulty router or a provisioning/authentication problem on TalkTalk's side.

Request:

Could a member of staff please investigate and advise whether this requires a replacement router or a fix at TalkTalk's end?

Happy to provide account details via PM.

Thank you.

Re: Full Fibre + Phone Line Down - Router Boot Loop? Unable to Reach Support (CV3 Area)

Philile-TT — Thu, 18 Dec 2025 07:21:47 GMT

Hi there @JeanC_2025 please contact the full fibre team using the details below:

Contact Number: 03451720074

Opening Hours:

Mon-Fri: 9am-7pm; Sat: 9am-6pm; Sun: closed

http://community.talktalk.co.uk/onlinechat

Mon-Fri: 8am-9pm; Sat: 8am-7pm; Sun: 9am-7pm

Re: Full Fibre + Phone Line Down - Router Boot Loop? Unable to Reach Support (CV3 Area)

KeithFrench — Sat, 20 Dec 2025 16:19:01 GMT

Hi @JeanC_2025

You could try a factory reset of the router. One way to do this is to press the small reset button by the power connector, whilst the router is turned on. Hold it in for about 10 - 20 seconds or until the light colour changes.

If that does not work, then you probably need a replacement router. The full fibre helpdesk is the only team that can assist, as the support staff on this platform currently do not have access to the FF systems.

Re: Full Fibre + Phone Line Down - Router Boot Loop? Unable to Reach Support (CV3 Area)

nambuso-TT — Mon, 22 Dec 2025 07:07:38 GMT

Hi there

@KeithFrench Thanks for helping out:)

@JeanC_2025 please try to perform a factory reset as suggested by @KeithFrench.