As we will see, there are multiple overlapping entities, systems, algorithms, and behaviors that can influence the “fate” of a number. There is no golden rule for understanding this phenomenon, as no silver bullet can instantly “fix” the call labeling and blocking issue. It all depends on what type of calls you’re placing, why you’re placing them, to whom, what’s your number management plan, your dialing strategy, and so on.

In this eBook, you will learn about the intricate mechanisms behind call labeling and blocking and what influences the classification of your calls. In the second part of the document, we will detail how to tackle this problem and create a mitigation strategy to fit your business model and call behavior.