https://lists.ausnog.net/pipermail/ausnog/2020-September/044558.html
[AusNOG] Basic question about fibre visual fault locators
visual fault locatorsbasicquestionfibre
https://www.computercablestore.com/Visual-Fault-Locators-731
Fiber Optic Visual Fault Locators | Computer Cable Store
Fiber optic visual fault locators are ideal for locating where breaks or faults are in fiber cables.
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