I recently bought a land line phone because mobile reception in my house was terrible and attending work meetings was troublesome. One of these days I start getting spam on the landline and then I realised there is no "reject" or "silent" button. I had to pickup a call to reject it which seemed like a chore in the age of mobile phones.
I think that depends on the phone model. I recall owning a cordless home phone years ago where you could just hit the Hang Up button without answering first.
