A Telnyx answering machine detection alternative
Telnyx answering machine detection is an option on calls made with Telnyx's Call Control API. Many VICIdial centers use Telnyx as a SIP trunk instead; on those calls, nomoVM adds AI answering machine detection inside your own dialplan, on Telnyx or any other carrier.
How Telnyx AMD works
When you dial with Telnyx's Call Control API you can request answering machine detection (the answering_machine_detection option), with several modes, and receive the result as a webhook event. It works on calls controlled through their API, not on calls your own Asterisk server places over a Telnyx SIP trunk.
Side by side
| Telnyx AMD | nomoVM | |
|---|---|---|
| How you turn it on | An option when dialing through their Call Control API | One EAGI line in your dialplan, or the WebSocket API |
| Telnyx as your SIP trunk for VICIdial | Their AMD isn't part of plain SIP trunking | Works: nomoVM hears the audio on your server |
| Works with VICIdial and Asterisk dialplans | Not directly: it's a setting on calls placed through their API | Yes: same AMDSTATUS variable |
| Carrier | Their network | Any SIP trunk or carrier |
| Verdict time | Depends on mode and settings | About 2 s, up to 3.2 s when unclear |
| Call screening as its own result | See their docs | Yes (SCREENING) |
| Recorded "Hello?" robots | See their docs | Fingerprint check across calls |
| Audio the model heard | See their docs | Playable in call logs, 1 to 90 days, deletable |
| Pricing | Per call, on top of their call charges (see their pricing page) | Free to 30,000 calls a month; from $99 for 1 million |
Based on Telnyx's public documentation at the time of writing (2026-11-12). Products change: check their current docs and pricing before deciding.
When Telnyx AMD makes sense
If your application already uses Telnyx Call Control to place and control calls, their built-in AMD needs no extra service.
When nomoVM is the better fit
- You run VICIdial, GoAutoDial or another Asterisk dialer and want to keep it.
- You use more than one carrier, or want to be free to change carriers.
- You want to see and hear why each call was judged the way it was.
- You want a flat monthly plan that doesn't grow with every attempt.
- You want to resell AMD under your own brand (white-label).
See how nomoVM decides: AI answering machine detection explained, and our measured accuracy. Comparing more options? Read compare answering machine detection options.
Stop sending voicemail to your agents
30,000 calls a month free. No card, no setup fee. Your dialer falls back to Asterisk AMD() on its own if anything goes wrong.