Call Whisper That Announces the Lead Source Before You Answer

A short whisper message plays to the person answering the call before the caller is connected. Know which campaign, source, or offer is calling so you can tailor your greeting and close more deals.

The bottom line

Last updated: May 2026

Call whisper plays a short audio message to the person answering the call before connecting the caller, telling them which campaign or source generated the call. CallScaler includes whisper on every plan with text-to-speech or custom audio. Press-to-accept (require the agent to press a key before connecting) is included too, which is critical for pay-per-call because it prevents voicemail pickups from being counted as answered calls. CallRail and CallTrackingMetrics offer similar features but only on higher-tier plans.

Curran Van Waarde
Written by Curran Van Waarde, Founder, CallScaler

Quick facts about Call Whisper

Price
Free on every plan
TTS or audio
Both supported
Press-to-accept
Yes, optional per number
Dynamic variables
Source, campaign, keyword
Delay
Under 1 second
Plans
PAYG, Pro, Agency, Pay Per Call

In-depth guide to Call Whisper

What call whisper does for your team

Call whisper plays a brief audio message to the person answering a call before the caller is connected. The caller hears normal ringing and never knows. A typical whisper might say 'Google Ads call for roof repair' or 'Facebook lead, water damage restoration.' This gives your sales team instant context so they can tailor their greeting and pitch to the caller's intent. Teams that use whisper consistently report better first impressions and higher conversion rates because the rep is never caught off guard.

Call flow editor with Greeting, Forward, and Voicemail steps. Whisper is configured at the flow level.
Call flow editor with Greeting, Forward, and Voicemail steps. Whisper is configured at the flow level.

Setting up whisper messages

CallScaler supports multiple ways to configure whisper messages:

  • Type a text message and CallScaler converts it to speech automatically
  • Upload a custom audio file for a professional, branded whisper experience
  • Use dynamic variables to insert the traffic source, campaign name, or keyword
  • Set different whispers per tracking number, call flow branch, or campaign
  • Enable press-to-accept to require agents to press a key before connecting
  • Combine whisper with IVR menus for multi-step caller qualification

Press-to-accept screening

Press-to-accept is a whisper option that requires the answering agent to press a key (usually 1) before the caller is connected. If nobody presses the key, the call moves to the next destination in your call flow. This is critical for pay-per-call networks because it prevents calls from being answered by voicemail systems, which would count as a connected call without actually reaching a live person. It also ensures agents are ready and attentive before the caller comes on the line.

Common whisper patterns for agencies

Agencies managing multiple clients on shared phone teams use whisper to identify which client the call is for. The rep hears 'Call for ABC Plumbing, Google Ads' and answers with 'Thank you for calling ABC Plumbing, how can I help you?' without any confusion. Pay-per-call networks use whisper to tell buyers which offer the call belongs to. Solo operators handling multiple business lines use it to switch context between different services. The pattern is always the same: give the answering party context before the conversation starts.

Tips for effective whisper messages

Make your whispers clear and useful with these guidelines:

  • Keep whisper messages under 5 seconds so callers do not wait too long
  • Include the traffic source and service type for maximum context
  • Use press-to-accept for pay-per-call to avoid billing on voicemail pickups
  • Test your whisper messages by calling your own tracking numbers
  • Update whisper copy when you add new campaigns or change offer names

Call whisper vs doing it manually

Without call whisper, your team answers every call blind. They do not know if the caller found them on Google, Facebook, or a billboard. They do not know which service the caller is interested in. This leads to generic greetings and missed opportunities to personalize the conversation. Whisper gives your team the context they need to make a strong first impression on every call. Automatically, with no effort from the caller.

Whisper for multi-client agencies

Agencies managing calls for multiple clients use whisper to tell the answering team which client the call is for. A shared receptionist hears 'Call for ABC Plumbing from Google Ads' and answers accordingly. This eliminates mix-ups and lets you route calls from multiple clients through a single phone team while maintaining a professional, client-specific experience.

Call flow settings panel with the Whisper Message toggle on, ready to announce the client and source
Call flow settings panel with the Whisper Message toggle on, ready to announce the client and source

Combining whisper with call flows

Whisper works seamlessly within CallScaler call flows:

  • Add whisper messages at different points in the flow for different routing branches
  • Use one whisper for sales calls and a different one for support calls
  • Combine whisper with round-robin so each agent hears the source before answering
  • Stack whisper with press-to-accept for pay-per-call qualification workflows

How it works

Hear the lead source before you say hello.

  1. Set Up Whisper

    Configure a whisper message on any tracking number or call flow. Use text-to-speech or upload custom audio.

  2. Call Comes In

    A caller dials your tracking number. CallScaler routes the call to your destination as usual.

  3. Whisper Plays

    Before connecting, a brief message plays only to the person answering: 'Google Ads call for roof repair.'

  4. Answer with Context

    Your team knows the source and intent before they say hello. Better first impressions, higher close rates.

Call flow settings with the Whisper Message toggle and text-to-speech input visible
Call flow settings with the Whisper Message toggle and text-to-speech input visible

Key capabilities

Give your team instant context on every inbound call.

Custom Whisper Messages

Set unique whisper messages per number, campaign, or call flow node.

Text-to-Speech or Audio

Type your message and let TTS handle it, or upload a custom audio file.

Source-Aware Greetings

Include the traffic source, campaign name, or keyword in the whisper dynamically.

Press-to-Accept

Optionally require the agent to press a key to accept the call, filtering out voicemail pickups.

Zero Delay

Whisper plays in under a second. Callers hear normal ringing — they never know.

Per-Route Whispers

Different whisper messages for different call flow branches. Sales hears one thing, support another.

Call whisper compared

ProviderPriceTTS + custom audioPress-to-acceptDynamic source variables
CallScaler (every plan)FreeYesYesYes
CallRail (Marketing)$95/mo tier onlyYesYesNo
WhatConverts (Pro)IncludedYesNoYes
CallTrackingMetrics (Marketing)IncludedYesYesYes

Pricing as of May 2026. CallRail restricts call whisper to its Marketing plan and above; CallScaler ships it on PAYG.

Who uses call whisper?

Sales teams and agencies that want context before every call.

  • Sales reps who handle calls from multiple campaigns and need instant context
  • Agencies whose clients share a phone team across multiple lead sources
  • Pay-per-call buyers who need to know which offer a call is for
  • Receptionists routing calls from multiple business lines

Frequently asked questions

Common questions about Call Whisper.

Start tracking your calls today

Sign up free, set up in under 60 seconds. No credit card required.