In very general terms , anyone with FTTP availability, will only have access to a single PON (it gets complicated if an address has access to multiple PONs (passive optical networks ) do you know if the tech had to re authenticate your ONT onto a different PON ?.
To maximise efficiency, (if the local geography allows it ) a node will be designed to have 4 splitters within it ,( think of each splitter as a PON , with its own unique ID ) and each splitter designed to have 30 addresses , so to simplify, say you were on a road with 60 houses , numbers 1 to 30 designed to be on splitter A , via multiple CBT’s , and houses 31 to 60 on splitter B via multiple CBT’s , it’s possible that (for example ) you could use a spare port on a CBT from splitter B for a house numbered 1-30 , but it would mess up the design, potentially leave a an address in the 31 to 60 range short of a port (although there are 32 ports , 30 is a self imposed limit ) , and the duct network would need to have access to both , and the address would have a longer cable route to the CBT than originally designed, but it could be possible , just not desirable ….if the tech did this , they would have to re authenticate your PON from one splitter ID to the other splitter ID .
If ( and this is more likely ) they simply connected you to spare port on the same PON , nothing actually changes optically as ports are identical if on the same splitter , what would change is the ‘mechanical’ connection , the devices in the joint boxes (and up poles for that matter ) are CBT’s , connectorised block terminals , a plug and socket arrangement, if the plug and socket were defective in a way that occasionally the connection failed (that’s possible) it would be weird that the issue presented itself in the way it did ( regularly at around the same time of day ) .
Hopefully this is the fix and it’s not a problem that will return, but the fix (unless the tech did move you to a different splitter ) seems peculiar, and obviously if it were an issue with the PON ( the one you were on ) and that issue wasn’t fixed , you were simply moved away from the faulty PON , which potentially will still be causing issues for those still connected to it ( you said some neighbours were also affected )
It’s possible the tech did something else , like changing the fibre from the aggregation node to the splitter , each splitter uses 1 fibre but has 3 allocated , perhaps it was that , although again it’s weird the way the problem manifested itself, dodgy splices or fibres generally work or don’t , they rarely work some of the time and not at other times , with a regular failure at around the same time of day , what’s more a light level check would usually indicate a poor connection that was barely ‘hanging on’ …but you can have remedies that work that seem to defy logic , hopefully whatever the engineer did fixed your problem and the neighbours problems at the same time .
