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In the course of troubleshooting a fault on your broadband service you may have been told by Cerberus or BT that your problem is being caused by electrical interference or environmental noise. This comes in 2 forms. REIN and SHINE. If it’s the first time you have come across these terms you would be forgiven for thinking that they are meteorological terms with no bearing on your Internet connection. These are not Cerberus acronyms, but rather industry standard terms to describe types of electrical interference. Here’s what you need to know: