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by LuxuriousCheese
2253 days ago
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ISPs or dark fiber providers have detailed maps aligning with road networks. If there’s a suspected fiber cut they’ll run an OTDR from the ODF box or the source photonic equipment which will show high reflection/ signal degradation where the break occurred to the nearest 100m dependant on test granularity. |
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Most of the time. I worked a summer for Virgin (UK) basically digging holes to run cables.
I'd say 1 in every 6-7 jobs we dug the hole and found no existing Virgin inf. in the ground. You'd have to come back the next day hopefully with better information to try again.