Full Fibre overall est fix lead time for a LOS fault?
Hi all.
Not sure how to term this but was wondering if there is a Full Fibre estimated lead time for fixes, when you have a LOS fault?
Naturally I'm expecting it varies dependant on the problem but I dont know if it is generally considered longer compared to copper based issues or not.
My situ is that last Wednesday, I started work (work from home) and things were being a bit ropey so I naturally assumed it was just my router / wifi mesh needing a poke that periodically sometimes happens and no big deal.
Managed to then join the meeting (that i was late for :D) but then within minutes, things seemed to crumble again, so this time I went to look at the ONT and saw that the LOS led was red and thought oh, maybe just needs a power cycle on the ONT as it wasnt clearing after sitting there watching it for a few mins...
Sadly after power cycling it, noticed the LOS and PON led's were lighting up in a intermittent ping ponging fashion (wasnt seemingly in any real order to it).
Don't remember exactly what happened after that - possibly I left it for a while doing that and it settled to just being LOS being red again or maybe I left it for a few mins and then tried another power cycle, not quite sure. Either way, it ended being just LOS red and staying that way. I didnt fiddle with any cables or the fibre itself and thought it best to use the report a fault SMS service (hadnt used it before).
The automated system ran a test and sure enough came back with a fault on the line and was able to book open reach engineer for the next available slot - which was on the Friday (just under two working days later, which was quite good).
The engineers visit was the lad was a nice chap, had a fiddle with the ONT initially, stuck a "laser" on the fibre and went off to try and trace it... came back an hour or two later and replaced it with a "stronger laser". At some point here I pointed out where the fibre ran (just in case) and he didnt seem realise that was the route so he went off to check that out.
Reappeared but next door, as the first pole the fibre went to was next door (of a sort) and I pointed him to the right way to get a response from the neighbour 
but he managed to find him and have a look at the pole there.
Eventually he came back and said that unfortunately there appeared to be something wrong with the fibre (i kinda gathered that :D). He did go off into a bit of detail but I didnt sadly catch all of it to remember everything. He said the the type of fibre was "blown" (and for some reason, the thought of a glass-blower came to mind :D) and that he doesnt do that and that would be a diff team that would need to reblow it or something, but then he also said that there maybe another way - something to do with another fibre on the panel (?) and that he might be able to come back on the saturday as he was working but would need another engineer with him and also would have to have the ok from his manager. He said they may not need to visit for that potential option really, but if we didn't hear from him, then it would likely need the other team to do the doo.
Saturday then rolled by and never heard anything.
I didnt have any sort of notifications after the initial SMS back and forth on the Wed - wasnt getting any emails oddly too - but its been a few years so wasnt sure what I was expecting there 
Managed last night to find the Ticket that was generated and I notice from a message on it today that they mention regarding the fault, that a task "has been raised for an N11 (high skilled) engineer to attend site to complete a further investigation into the network issue", but I'm not sure if that is generic speak as didnt the first chap find what the problem was after all then?
Alas because I work from home, don't use satellite/antennas so generally stream media, and have smart homed a lot of the house (guess I should have looked at Home Assistant after all), it's quite disruptive (health issues in the mix for me too) so I'm unsure whether I should look to alternative connectivity methods for the time being (I can dual WAN with a USB 4G/5G dongle or smartphone apparently, although my data allowance is almost blown away in 4ish days already so...) or whether I'm jumping the gun a bit here and I just need to wait just another day or two longer (data sim has been ordered - just in case i need to activate it, assuming i can find a spare device to use :D) for more info on the situ.
Thanks for reading (if you've made it through all this :D) and any suggestions are welcomed.
Thanks for the reply @markhawkin 
All sounds on point to me I only have experience of fibre in cabs (in a internal networking sense) with work and not really so much of that these days (comms guy is just too good to require me to assist, so my knowledge is wonky to say the least lol). Closest thing to (physical) networking i've done recently is terminating a cat6 link from next to the ONT, to where I've moved my router that was there [Asus GT6] over to the other side of the room 😁 - just to tidy things up, since that first engineer came PORT1 on the ONT is looking happy at least on that front but i can easily just plug the router directly in when the time comes following the fix
Also, have had a update on the ticket early evening to say "I have reviewed this fault and Chief Engineers (CE) estimate xxxxxxxxx has been raised to replace cabling" so thankfully it does look like they have determined its a fibre cable break or similar somewhere externally from the sounds of it so does seem on point to the thinking/what the first engineer was saying.
Ordered last night a new (free) data sim from my phone provider, so as this is likely going to be a few weeks I suppose so now I'm aiming to get my home wifi mesh I have with the Asus GT6 router with Dual WAN (well, just the backup WAN option at the moment of course :D) using a 4G/5G USB dongle or phone with that data sim I've ordered.
So if i can get it to work (dont have anything new enough/still works - bar possibly my partners old phone that should still work for 4G - but either way, will try that out to see if I have something that I can use to do that, and if it does work, then will get something specific (or just use my phone for the purpose and get a new phone lol) . Only about £18 for unlimited data for a month so not a biggie really additional data plan wise, its more finding out what device will work is what I'm needing to do now then i think
Can then run the router using that sim for a month (or roll the plan to another month, if it goes that long) and also have all the smart devices working and I wont have to faff about with enabling hotspot on my phone etc
@Baldrick1 Thanks for this mention - hadnt realised that was in place so thats good to know. If I do end up using my old phone for the purpose and it goes the full distance, then at least that will be a new phone cost sorted ha
Thanks both