Why You Should Record Your Voicemail Message Twice in VICIdial

Here is a small habit that saves a lot of wasted voicemail drops: record your answering-machine prompt twice inside the same audio file. When VICIdial plays a message to a detected machine, the start of the recording often gets clipped, and a single pass means the customer hears half a sentence. Playing the message back-to-back guarantees they catch the whole thing at least once. This page explains why clipping happens and how to record the prompt cleanly.

Why the beginning gets cut off

When an outbound call lands on a voicemail box, the dialer has to decide that a machine answered before it can play anything. With answering machine detection (AMD (answering machine detection)) running, that decision takes a moment, and the call processor spends part of the greeting just listening. With the simplest no-detection setups, the prompt starts playing the instant the line is picked up, so it talks over the customer's own outgoing greeting. Either way, the first second or two of your message can be lost.

The cleanest fix is not to fight the timing, it is to give the listener a second chance. If your prompt plays once, gets clipped, then plays again in full, the recipient still hears the complete message. This matters whether you are doing a true voicemail-drop (Voicemail drop) on a detected machine or a simpler broadcast-style message campaign.

How clipping varies by playback method

flowchart TD
  A[Customer side picks up] --> B{Playback method}
  B -->|Play Immediately| C[Message starts before greeting ends]
  B -->|Wait set seconds| D[Fixed delay then play]
  B -->|Wait for silence| E[Wait for quiet then play]
  C --> F[Start often clipped]
  D --> F
  E --> F
  F --> G[Second pass plays full message]

Message campaigns offer a few playback styles. Play Immediately is the easiest and needs no dialplan (Dialplan) edit, but the audio starts before the person finishes saying hello, so machine recordings lose their opening. Waiting a set number of seconds or waiting for silence on the line both push the start later and give some rough machine detection, but you still tend to miss the beginning on voicemail boxes. Every one of these methods benefits from the same trick: record the message twice in the file. On a Play Immediately recording, it also helps to wait two to three seconds before you start speaking, so a live person gets a brief greeting window before your message begins.

How to record the prompt

You have two practical paths. You can upload a prepared audio file to the audio store and reference its filename in the Answering Machine Message field. The file should be GSM format 8k 8-bit mono, or WAV format PCM 8k 16-bit mono. If you go this route, just record your script, leave it, then record it a second time in the same file before you export.

1. Dial 8168 from a registered phone and follow the prompts to record a message.
2. Enter the PIN 4321 when it asks.
3. Speak your message, pause briefly, then speak it again so the file holds two passes.
4. Write down the prompt ID it reads back, which starts at 85100001 and counts up.
5. Paste that prompt ID into the Answering Machine Message field, or pick it from the audio chooser.

Keep the doubled message short. Two short passes finish before a voicemail box times out, while two long passes can run past the recording window and defeat the point. If the script is long, record it once and accept that you need cleaner detection rather than a second pass that never plays.

Where this fits

This is one small piece of getting machine answers right. For the full picture, read our AMD and CPD guide, and if you want to understand the detection step that decides a machine answered in the first place, see how VICIdial AMD detects machines.

On VICIfast, the audio store, recording prompts, and message campaigns are configured for you, so you can focus on the script instead of the file formats. See VICIfast pricing to get a tuned dialer running.