Every phone call is an attempt at communication between the Customer & Representative; it’s a method for imparting and receiving information. When telephone etiquette isn’t observed, communication may be more difficult. In general, people are asked to keep their language more standard, as opposed to using slang; to be polite to each other, and to make it clear who caller and receiver are. While it may be okay from time to time to depart from etiquette, especially when calling friends, it's often best to stick to established etiquette.