How does VoIP paging work?

At a basic level, VoIP paging operates like a phone extension that auto-answers calls made to it. The cloud PBX maintains the paging groups and delivers real-time audio to IP speakers.

To broadcast a message, a user would dial a particular extension on their phone and begin talking. The paging equipment immediately repeats the audio sent to it.

Many IP speakers also support multicast for low latency and optimal sound quality. This reduces the bandwidth when you need to speak over an intercom system.

Paging system components

A SIP-based telephone system simplifies a paging system into four essential components:

  • Paging amplifiers provide volume control to speakers, such as ceiling speakers.
  • Paging adapters retrofit existing analog speakers to work with a SIP-based paging server.
  • Power over Ethernet (PoE) supplies low-voltage power and a data connection over a single wire.
  • SIP endpoints connect the paging device to authorized phone system users.

The need for wall-mount or ceiling speakers decreases with the rise of IP phones. Desk phones include built-in VoIP paging functionality. Amplified sound is vital in loud environments such as in manufacturing or a hospital.