This topic

Full fibre install, PON flashing

markt99 — Tue, 30 Jul 2024 11:25:08 GMT

I have had full fibre installed but have got no service and the PON light on the modem is flashing. I was told that it is a fault at the exchange and an engineer was fixing it yesterday so it should work today, but today the PON light is still flashing.

Re: Full fibre install, PON flashing

naylor2006 — Tue, 30 Jul 2024 11:33:47 GMT

Aside from power cycling the ONT it looks like the issue still remains and they have not solved it, or the issue they went to solve could not be solved during that visit.

Updates from OR are pretty useless half the time, "Specialist Engineer to attend light issue" etc etc "Engineer tasked to repair external issue", to us the updates seem like the problem is straight forward but that first quote...was my issue and it took nearly 2 months.

To get updates however you'll need to keep badgering customer services, they or tech folks will be able to check the status of the fault via Openreach and attempt to give you some sort of update.

Re: Full fibre install, PON flashing

WSH — Tue, 30 Jul 2024 12:26:02 GMT

I believe if the PON light is flashing green it indicates that the unit is connected but failing to authenticate. It suggests a mismatch between the serial number on the box and the number they have on record.

Next time you phone it might be worth getting them to check if the serial number they have agrees with what you are seeing on the ONT label.

Re: Full fibre install, PON flashing

licquorice — Tue, 30 Jul 2024 12:31:40 GMT

Indeed, a flashing PON led is not a physical light problem, it is an account problem.

Re: Full fibre install, PON flashing

markt99 — Tue, 30 Jul 2024 13:06:09 GMT

I find it unbelievable if it is something as simple as that.

Re: Full fibre install, PON flashing

naylor2006 — Tue, 30 Jul 2024 12:54:46 GMT

Slightly proves my point about updates, customer informed there is a fault at the exchange when its an account issue?

@markt99 we are all customers here apart from a few mods....so the serial number is most likely best given to an agent over the phone.

Re: Full fibre install, PON flashing

WSH — Tue, 30 Jul 2024 13:01:37 GMT

As Naylor says, we are all customers here so you will need to check with BT if they have the correct serial number.

This is a public forum. I'm not sure if there are any security implications to displaying that number but I would remove it just in case.

Re: Full fibre install, PON flashing

36ULW — Tue, 30 Jul 2024 14:48:47 GMT

Not necessarily true. You can still get Flashing PON Issues even if the Routing, Head End Port and ONT all match up.

There could potentially be a faulty SSFP or the wrong kind of SSFP Installed.

Also the Light Range may not have been set correctly. If the Range has only been set to 10,000m but the PON is say 15,000m away you would still get a Good Light Reading at the ONT but a Flashing PON would still occur.

Re: Full fibre install, PON flashing

naylor2006 — Tue, 30 Jul 2024 14:55:47 GMT

The 'light issue' I had for about 2 months cause my LAN light to go off as soon as the PON light went solid. Everyone told me it was a internal device issue etc, considering the LAN light should only really indicate the continuity between two devices, it would be solid during ONT boot up but as soon as the PON light went solid, off it went.

Im not overly sure we can know conclusively from the ONT itself what the fault is, if BT, I assume, told OP that an engineer was fixing something and its not solved, then they are surely best to call up and check on that.

Re: Full fibre install, PON flashing

WSH — Tue, 30 Jul 2024 15:06:41 GMT

@36ULW Yes, I did say "I believe" that to be the case.

Thanks for that. Useful info.

Re: Full fibre install, PON flashing

iniltous — Tue, 30 Jul 2024 15:29:17 GMT

This isn’t the OP’s first post on their issue , I would suggest reading the previous ones , that will result in more informed responses.

Re: Full fibre install, PON flashing

WSH — Tue, 30 Jul 2024 16:36:01 GMT

@iniltous Ah...seems to be quite a history there then. You would have thought the OP would have mentioned it was a long term issue and would realise it wasn't something trivial by now then.

Re: Full fibre install, PON flashing

naylor2006 — Tue, 30 Jul 2024 17:04:01 GMT

It’s been going on since last year? 😳

Re: Full fibre install, PON flashing

markt99 — Tue, 13 Aug 2024 10:01:14 GMT

Phoned BT and they said a chief engineer has been allocated to fix the problem at the exchange.

Re: Full fibre install, PON flashing

markt99 — Tue, 13 Aug 2024 09:50:36 GMT

Getting compensation from BT again for failing to deliver working full fibre to my property.

Re: Full fibre install, PON flashing

36ULW — Tue, 13 Aug 2024 16:52:50 GMT

Chief Engineers. 😆

If it’s same so called Chief Engineers that were there when I was then they’d be better off sending out a Kelly’s Contractor who just finished his Training this afternoon.

Re: Full fibre install, PON flashing

markt99 — Wed, 21 Aug 2024 12:19:53 GMT

That's what I've been repeatedly told, they are trying to allocate 'chief engineers' to fix the issue whatever chief engineer means at Openreach.

Re: Full fibre install, PON flashing

36ULW — Wed, 21 Aug 2024 20:03:44 GMT

To be honest it doesn’t actually mean anything.

It’ll just be an Openreach Engineer, Technician or whatever you want to call them.

When I was there people who worked for the so called Chief Engineers were the Golden Boy’s who probably Brown Nosed their way into it.

Anyway, doesn’t matter as I was told by a mate whose still at Openreach that the Chief Engineers has been merged with the even more useless Fibre Network Delivery to form a new Group called Complex Engineering.

I can only imagine what a useless shower of chit most of them are.

Re: Full fibre install, PON flashing

naylor2006 — Thu, 22 Aug 2024 08:01:46 GMT

🤣

Re: Full fibre install, PON flashing

markt99 — Tue, 27 Aug 2024 12:45:05 GMT

I phoned BT and have been told my order is cancelled as Openreach could not fix the issue. I live in a block of flats and they labelled problems with the full fibre install in a multi dwelling unit to blame.

To get full fibre enough people in the block now have to sign a notification of interest to Openreach, then something along the lines of a Openreach multi dwelling install unit will sort out the issue, but until then no full fibre at my address. 😬😵‍💫🤮