Intercom systems can provide a facility with a significant amount of security and control, enabling users to effectively communicate with other individuals through a building and manage the flow of visitors. Over the years, this technology has evolved considerably, from a voice only intercom solution to now incorporate multiple technologies such as IP cameras and integrations with access control badge readers.

When selecting an intercom system, end users have the option of deploying either a SIP based system, one that relies upon a central server in order to communicate between devices, or a peer-to-peer system which leverages a direct communication structure.