How to add call whispers

A Whisper is a short audio message played only to the agent the moment they pick up, before the caller can hear anything.

It gives the agent instant context so they can tailor their response before saying hello.

E.g. "Call from Christmas Radio Campaign".

Step 1. Open the Call Flow Builder

• Go to Tracking > Call Flows.
• Click Create to start a new call flow, or click an existing call flow to edit it.

Step 2. Add the Whisper action

• Click the + button below the Dial destination.
• Select Whisper from the Add-ons menu.

Step 3. Configure the whisper message

• Choose Text to Speech to type a message directly, or choose Tracking Number Whisper to assign a different audio file per tracking number from the Media Library.

Step 4. Assign per-number whispers in the Media Library (if using Tracking Number Whisper)

• Go to Media Library.
• Click the + next to each tracking number in the call flow.
• Select the audio file to play for that number.

🎉 Done. Agents will now hear the whisper the moment they pick up, before speaking to the caller.

Detailed Guide: Template: how to add call whispers

Detailed Guide: How to access the media library

Detailed Guide: How to assign tracking numbers to call flows

Updated on: 01/04/2026