What is the difference between a hot call and a cold call?

Warm calling refers to a sales call and cold calls refers to basically the first contact attempt at a prospect, to try and create a positive lead, which would turn out to be a potential client.

A hot call refers to a sales call, visit or email that is preceded by some sort of contact with the potential customer or prospect.

cold calling is a technique where by a salesperson contacts individuals who have not previously expressed an interest in the products or services that are being offered