A person answers
The call continues and is handled by your team or by an AI voice agent.
Carrier
Voice and numbering to reach more people
VHunter analyzes the early media of every call and recognizes voicemail by its frequency signature, not by speech patterns. The call is cut before the voicemail picks up, and the contact continues on WhatsApp.
Trusted by high-growth teams




How it detects
Pattern-based detection waits for the call to be answered so it can listen to the greeting. VHunter works earlier: it recognizes voicemail in the early media by its frequency signature and cuts the call in time.
We analyze the audio that arrives before the answer, in real time and on our network.
We recognize voicemail by its frequency signature, not by what the greeting says.
The call is cut before the voicemail picks up.
Detection designed for high-volume operations.
After detection
When a person answers, the call continues as usual. When it's voicemail, the call is cut and the contact continues on WhatsApp (or by SMS if you operate in Mexico).
The call continues and is handled by your team or by an AI voice agent.
Whoever couldn't answer gets a WhatsApp message to pick the conversation back up. In Mexico, by SMS too.
Your agents, human or AI, spend their time on the calls a person answers.
Savings and effectiveness
Cutting voicemail calls in time means big savings for your operation. And with a high effectiveness rate, your campaign puts its resources into the people who do answer.
Every voicemail detected is a call cut before the answer.
Recognizing the frequency signature lets you decide in time, call by call.
Your team spends less time listening to voicemail greetings.
Following up on WhatsApp opens another way to reach those who don't answer.
Integration
VHunter runs on the Astroline network. Any dialer or contact center platform that sends its calls through our SIP Trunk can use it.
Detection happens on the Astroline network, not on your platform.
Works with any dialer or contact center platform that calls over SIP.
Built for high volume: it scales up to 10,000 CPS.
It works alongside our SIP Trunk, numbers and WhatsApp follow-up.
Frequently asked questions
It's Astroline's voicemail detector. It runs on our network: it analyzes the early media of every outbound call and recognizes voicemail before the call is answered, so the call can be cut in time.
It's the audio that travels on a call before it's answered, such as the ringing tone or network announcements. VHunter analyzes it in real time to recognize whether the call is going to end up in voicemail.
Pattern-based detection waits for the answer and listens to the greeting (its silences, its length, its words) to decide whether it's a person or a voicemail. VHunter decides before the answer, using the frequency signature, so the call is cut before the voicemail picks up.
The call continues as usual and is handled by your team or by an AI voice agent, depending on how your campaign is set up.
Cutting voicemail calls in time means big savings on voicemail and frees your team for the calls a person answers. The exact saving depends on the volume and profile of each campaign; we'll help you estimate it with your own data.
VHunter works with a high effectiveness rate. Because it relies on the frequency signature rather than the content of the greeting, it doesn't need to understand what the voicemail message says.
Yes. VHunter runs on the Astroline network, so it works with any dialer or contact center platform that sends its calls through our SIP Trunk. There's nothing to install on your platform.
You can follow up on WhatsApp (or by SMS in Mexico, where we're an SMS provider) or try again later from your dialer. And if you'd like to automate it, an AI agent can pick the conversation back up on WhatsApp.
We support you through the whole process: SIP Trunk connection, go-live and follow-up on WhatsApp.