VICIdial Voicemail Message: Complete Optimization Guide

Quick Reference

Setting Name

voicemail_message

Default Value

Recommended

15 to 25 second pre-recorded message

Impact Level

High

Location in VICIdial

Admin > Campaigns > [Campaign] > AMD Settings

What Voicemail Message Does

The audio file path or message to play when AMD detects an answering machine and is configured to leave a voicemail via amd_send_to_vmx. The message should be compelling, brief (under 25 seconds), and include a clear call to action and callback number.

Center Size Recommended Value Notes
10–25 Agents 15 to 25 second pre-recorded message Start conservative, monitor for 48 hours before adjusting
25–100 Agents 15 to 25 second pre-recorded message Scale gradually — larger operations amplify effects of misconfiguration
100–500 Agents 15 to 25 second pre-recorded message Consult ViciStack optimization team for enterprise-scale tuning

How to Change This Setting

  1. 1 Navigate to Admin > Campaigns
  2. 2 Select campaign
  3. 3 Find Voicemail Message field
  4. 4 Enter path to audio file on VICIdial server (e.g., /var/lib/asterisk/sounds/voicemail_campaign_a.wav)
  5. 5 Ensure file exists and is readable by Asterisk
  6. 6 Test playback from command line before deploying
  7. 7 Submit

Common Problems

File path wrong causes AMD to fail silently without leaving message

Message too long (over 30 seconds) gets cut off by voicemail systems

Poor audio quality sounds unprofessional — use professional recording studio or quality TTS

amd_send_to_vmx AMD Send to Voicemail Extension Campaign dead_trigger Dead Trigger Campaign amd_type AMD Type Campaign amd_agent_route AMD Agent Route Campaign

ViciStack Module

How ViciStack Optimizes Voicemail Message

ViciStack's AMD Optimization module automatically monitors and optimizes voicemail_message based on real-time performance data from your operation. Instead of manual tuning, ViciStack continuously analyzes call outcomes, agent performance, and contact rates to recommend and implement optimal values — often catching configuration drift before it affects your numbers.

Learn About AMD Optimization →

Frequently Asked Questions

What does voicemail_message do in VICIdial? +
The audio file path or message to play when AMD detects an answering machine and is configured to leave a voicemail via amd_send_to_vmx. The message should be compelling, brief (under 25 seconds), and include a clear call to action and callback number.
What is the recommended value for voicemail_message? +
The recommended range for voicemail_message is 15 to 25 second pre-recorded message. The out-of-box default is . Note that optimal values vary by operation size, campaign type, and carrier — use ViciStack's automated tuning to find your exact optimal configuration.
Can ViciStack automatically optimize voicemail_message for me? +
Yes. ViciStack's AMD Optimization module monitors voicemail_message continuously and alerts you when the value drifts outside optimal range. On qualifying plans, ViciStack can automatically adjust this setting based on real-time performance data — no manual intervention required.

Not sure if your VICIdial settings are optimized? Get a free 247-point audit.

Get Your Free VICIdial Audit →