Understand whether they are making a delivery or whether they are a salesperson or other door-to-door solicitor

Goal

To be able to understand when a speaker on the intercom is making a postal or courier delivery and when they are a salesperson or other door-to-door solicitor.

Setting

Listen to a speaker on your home intercom and understand whether they are making a delivery or whether they are a salesperson or other door-to-door solicitor.