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Sagemcom FAST 5464 not connecting to ONT

DRJCam
Team Player
Private Message TalkTalk
Message 39 of 39

I have been using Fast Fibre 65 for quite some time without issue, but at the start of November 2024 I kept getting connection drop-outs. My PC is wired to the router so this is not a WiFi issue. The Internet would drop out for a minute or so, then return. However, this would kill off Teams  and other meetings / calls, and generally cut off connections to remote locations. Come the start of December 2024 it was getting to be a few times a day. When this occurs, if I go through to the where the router is, I can see it flashing amber, and the Ethernet light on the ONT (black box on the wall) is off. After 30 seconds or so the router connects to the ONT and the service is up and working - the flashing amber light turns solid white.

I have had a nightmare trying to talk / chat with support, and the 'experts' just run off a script and keep asking the same pointless questions I had already answered in the chat. Hint to TT: don't think outsourcing to under-trained, under-skilled services is saving you money.

Anyhow, after one 'expert' decided they could fix it remotely it stopped working entirely. I won't dwell on the Kafkaesque series of events (still ongoing) but I have now discovered something interesting. Note also that I did find a few similar stories on the Internet and even in this community, but no explanation or solution that works for me.

The router (Sagemcom FAST 5464) sits flashing either slow or fast amber. The flash speed reflects whether the green Ethernet light on the ONT is on or off (I forget which way round) - and the router will quite happily sit there for days repeating the slow, then fast flashing without ever connecting. I have had two texts from Talk Talk a few days apart saying "Good news! We have applied a solution...", but of course it wasn't a solution to the problem I am having. They don't explain what they have done, which may be helpful to know for long-running issues.

Several things come to mind

- The old router could be on its way out?

- TalkTalk have implemented some upgrade without telling me, and it broke things

- The fibre connection is broken

Apparently, the fibre connection reported itself working. However, connecting the PC directly to the ONT I could get no connection... at least for the first 6 days of the 'no connection' problem, and I was repeating the router and PC connection testing daily. Then on Monday 16th Dec, even though the router could not connect, the PC could. This is a change in behaviour, and a possible step in the right direction. So the ONT / fibre connection was truly working - so it must be the router? I borrowed a similar router from a friend, and yes, that just connected and produced a WiFi network  etc. etc. Trying my original router again it was just flashing amber lights, so I managed to get TT to send a new FAST 5464 router - I set it up but it did the same as my old router. This is when I looked more closely and realised the friend's router was a Huawei DG8041W (not now in front of me but sure that was the code).

So the questions are

- What changed to stop the FAST 5464 working? (it wasn't me!)

- Why would the Huawei router (much older I believe) work fine?

- Why is there no easy-to-find answer to either of the above?

I am still without a working router (hmm, define 'working'), and therefore no usable data service from TalkTalk. If the Huawei routers work, can TT send one of those instead of the Sagemcom? How do I get that to happen before Christmas?

TIA

DRJ

PS I may only be able to check replies intermittently, when I have access to the Internet

38 REPLIES 38

DRJCam
Team Player
Private Message TalkTalk
Message 21 of 39

Hi Chris,

Yes, let's give it a go. Let me know and I will swap out the PC with the router to see what it does. 

Thanks

DRJ

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Message 22 of 39

Hi DRJCam,

 

How are you getting on, would you like me to try the profile change? (it is simple to do and change back if required)

Chris

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DRJCam
Team Player
Private Message TalkTalk
Message 23 of 39

Interesting proposition. Is this a relatively 'quick' thing to try? And can you reset it back again? Do you have any feeling for what it might do re the connection? The PC is fairly new and running Windows 11.

 

Much as I want to solve this ASAP, perhaps leaving it until Monday makes more sense, although all mobile data has run out so if the computer connection goes and the router still doesn't work it may be awkward to get in touch.

 

I will check the Sagemcom router again this evening (I've been doing tests morning and evening in case something has changed!) and can post findings. You don't work evening and weekends by any chance 😁 (just joking)

 

Thanks for you help on this 

 

 

 

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Message 24 of 39

It won't damage your PC but it could stop it connecting to the internet if it is currently connected. Do you want to leave this until Monday as I wouldn't want to leave you with no internet connection if it works OK with the PC directly connected to the ONT?

Chris

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DRJCam
Team Player
Private Message TalkTalk
Message 25 of 39

Hi Chris - I think the PC is on & currently connected to it, although I'm not there right now. The Huawei is back with my friend - it is her router that she is using for her TT broadband, so I can only borrow it for a quick test. Obviously it would be good to get one of the Sagemcom routers to work at my house. Presumably this won't affect / damage the PC (it is connected to the ONT by an ethernet cable)?

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Message 26 of 39

Fibre 65 does come in 2 varieties, FTTC and FTTP but it isn't really relevant to this. I'll try changing your profile, is it OK if I do it now, it will probably disconnect the Huawei if you currently have it connected?

 

Chris

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DRJCam
Team Player
Private Message TalkTalk
Message 27 of 39

@Chris-TalkTalk : "Just to confirm, if you now connect the Huawei router to the ONT it works fine?" - that is correct as of 2 days ago. It worked fine although I only connected a couple of mobile phones to it because the local network was different name/password of course, so didn't bother re-connecting various boxes. I could browse happily on my mobile without any mobile data, but connected to the WiFi through the Huawei router.

Does the '65' package come in two varieties? Is there a difference between Full Fibre and Fast Fibre that is relevant to this?

 

@Gliwmaeden2 : I know they are the older ones - that's what is so frustrating. The older kit is working and the supposedly newer & better kit has stopped working - and it doesn't seem to be specific to my TT connection.

Message 28 of 39

I thought it might be an issue with the profile but the Sagemcom firmware version seems to be compatible with the currently profile. Just to confirm, if you now connect the Huawei router to the ONT it works fine?

Chris

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Message 29 of 39

@DRJCam, the Huawei routers no longer get updates, so are not a longer term solution, and Talktalk no longer supplies these.

Gliwmaeden2, a fellow customer.
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DRJCam
Team Player
Private Message TalkTalk
Message 30 of 39

SECOND UPDATE

I also dropped off the brand new FAST 5464 router at my friends house for testing. That too cannot connect to her TalkTalk connection, which is also the fast fibre 65.

 

Current situation:

Neither FAST 5464 router (new and old) can connect at either my house or my friends house (both FF65)

My friends Huawei router can connect at both houses

My desktop PC can connect at my house

 

Surely this can be figured out before Christmas, but I suspect I will be here waiting still in January.

I suppose I could buy my own secondhand Huawei DG8041W and use it - I think they were TT branded so maybe TT can send me one? Solve a customer problem in one easy go?

 

Message 31 of 39

Thanks, I'll take a look at this now and get back to you

Chris

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DRJCam
Team Player
Private Message TalkTalk
Message 32 of 39

Hi Chris - hopefully you should have that s/n now - thanks

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Message 33 of 39

Hi DRJCam,

 

Can you PM me the serial number from the router that you currently have connected please

 

Chris

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DRJCam
Team Player
Private Message TalkTalk
Message 34 of 39

UPDATE / ADDITIONAL INFORMATION

 

This morning I dropped my FAST 5464 router off at the friend who has a working TT connection (albeit working with the Huawei DG8041W) so she could test my router with her (perfectly ok) connection.

 

The FAST 5464 router fails to connect at her house as well. Her Huawei working fine.

 

Beginning to look like the FAST 5464 routers are not talking properly to the fibre connection, or they are being blocked by some part of the fibre connection.

 

Remember that this FAST 5464 router had been working ok with my FF65, then it stopped for no particular reason. This would suggest TT have done something to the connection at their end for this to happen. Can someone / an engineer look at the works history to see if something was updated / upgraded / tweaked, because it might be that this is now made it incompatible with the FAST 5464

 

Possibly also worth noting - my friend reported that after initially connecting the FAST 5464, after 30 seconds or so, the router did go white for a second, then went back to flashing amber. 

 

Still no service at my house though.

 

Cheers

DRJ

DRJCam
Team Player
Private Message TalkTalk
Message 35 of 39

Hi Debbie,

 

Yes I got it yesterday evening and tried it out.

 

So far, both the original FAST 5464 and the brand new FAST 5464 don't connect. They continue to flash amber (slow and fast) forever. They won't reset (either by poking the reset or leaving switched off for hours). Note, of course, that the original FAST 5464 had been working fine for a long time, but then just stopped without any obvious reason.

 

What does work

- My desktop PC connected directly to the ONT by ethernet cable

- An old Huawei TalkTalk router I borrowed temporarily from a friend (and now she has it back)

 

What does this mean?

 

Thanks

DRJ

 

Message 36 of 39

Hi @DRJCam 

 

Apologies for the confusion

 

The replacement was only sent on 17/18th December. When did you last receive a router? (Was it yesterday)

 

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DRJCam
Team Player
Private Message TalkTalk
Message 37 of 39

Hi Debbie,

Please see my original post - "so I managed to get TT to send a new FAST 5464 router - I set it up but it did the same as my old router."

Thanks

DRJ

Debbie-TalkTalk
Support Team
Staff
Private Message
Message 38 of 39

Hi @DRJCam 

 

I'm sorry to hear this.

 

I can see that a replacement router has already been ordered (yesterday) You should receive this within the next 24-48hrs.

 

Please let us know how you get on.

 

Thanks

 

Debbie

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