What Does Auto Dialer Mean?

An auto dialer is a software program used to automatically dial many numbers from a database. It can be configured to leave messages for people on answering machines, receive recorded responses or dial telephone numbers for an operator. Auto dialers are extensively used in telemarketing and customer support.

Techopedia Explains Auto Dialer

The main principle behind auto dialers is the ability to detect live human pickup and answering machines. As there are no hardware signals when calls are answered by an answering system, auto dialers analyze received audio to make predictions.