4.1. Introduction

In this chapter we'll go over the capabilities of Asterisk's built-in voicemail system. Note that this is different from an Interactive Voice Response System (IVR), which is covered in depth in Chapter 5, Interactive Voice Response (IVR).
Voicemail is an essential component of any professional telephone system.[15].

As a humorous homage to the popular Nortel Meridian® PBX voicemail system called Meridian Mail®, the Asterisk developers have named the Asterisk voicemail system Comedian Mail.