Ghost calls are an annoyance for anyone who uses VoIP phone systems. Also known as phantom calls, the handset will ring, and no message will be left. And if you pick up the phone there’s no answer, only dead silence.They’re irritating and can be extremely time-consuming. You’ll be able to recognize them as they come from area codes like 100, 1000, or 1001. That’s because these numbers don’t exist. They originated from a phantom source.So, what can you do about them?Where Do Ghost Calls Come From?The first thing that businesses think of is that...