What is Comms (Talkback) at Live Events?

Comms (also called talkback or intercom) is the headset system that lets show crew talk to each other hands-free during a show, usually directed by the show caller or stage manager. Operators for lighting, sound, video, followspots and stage all wear headsets, so cues can be called and confirmed instantly. Good comms discipline is one of the marks of a well-run show.

How comms works

A comms system is set up and used in five steps:

  1. Plan channels: decide who needs to hear whom, such as a main show channel and a separate technical channel.
  2. Install: run cables to wired beltpacks, or set up wireless beltpacks and antennas.
  3. Test: check every position can talk and hear clearly before the show.
  4. Run the show: the caller gives standbys and gos, and operators reply.
  5. Keep discipline: keep chatter off the main channel during the show.

Comms is how cues from the running order reach every operator at the right time. Crescat keeps that running order shared and up to date.

Comms vs two-way radio

Comms is mainly for the show crew in fixed positions, with full headsets and several people able to talk at once. Two-way radios are for people moving around the venue or site, such as security and production, where only one person can talk at a time.

Who usually wears comms

  • The show caller or stage manager
  • Lighting and sound operators
  • Video and camera operators
  • Followspot operators
  • Stage crew and flys
  • Producers and floor managers at broadcasts
  • Riggers moving scenery or performers during the show

Frequently asked questions

What is a beltpack?

The small unit worn on a belt that the headset plugs into. It has a talk button, volume control and channel selection, and can be wired or wireless. Wireless beltpacks let crew move around while staying connected.

What is a partyline?

A comms channel where everyone on it can hear everyone else, like a conference call. Most show comms uses partylines, often with a separate private line for the caller and key operators.

Do concerts use comms?

Larger concerts do, linking lighting, video, followspots and stage management. Smaller gigs often rely on radios or hand signals between the stage and front of house.

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