The intercom and paging features are both used for communication within an organization, but they have different functionality.

PAGING

This feature is useful for broadcasting important information to a group of people, such as an announcement of a meeting, or an emergency alert. It is similar to a public address system (PA system).

Paging is typically one-way communication, and it is useful when you need to communicate a message to a large group of people within a building or campus.

INTERCOM

On the other hand, Intercom is a feature that allows for bidirectional, point-to-point communication between specific phones within a voice-over-IP (VoIP) phone system. It works similarly to a walkie-talkie, where one user can initiate a call to another user and they can communicate in real-time.