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I mean like the person calling you blocked their number but it still shows on the caller ID. Like if I called a business and didn’t want my number to show on the caller ID, is there any chance they could get the number?

I need to forward calls that are coming in to the front desk to another phone in the building. Does anyone know if this is possible or how to do it? We have a phone tree and when the caller hits zero it does a double ring at the front desk. I need that double ring to go to my office phone??? Anyone?