QA for your Telnyx agents
When something goes wrong on a call, was it the carrier, the audio, or the agent? Zelto listens to every production call and tells you what broke, how often, and how to fix it.
What actually breaks on Telnyx in production
Dashboards show you that calls happened. They don't show you the calls that quietly failed — and those are the ones that cost you customers.
Telephony problems blamed on the agent
Choppy audio, echo, dropped legs — callers experience them as 'the AI is bad.' Zelto listens to recordings, so you can tell carrier-side degradation from agent-side failures and fix the right layer.
IVR and human handoffs that fail
DTMF menus mis-navigated, transfers to agents that never connect, hold-to-human flows that strand callers. These live at the seam between telephony and AI — exactly where dashboards go blind.
Dead ends on real caller behavior
Real callers mumble, interrupt, and call from noisy environments. Failures that never occur in testing occur constantly at telecom volume. Zelto clusters them into Findings ranked by how many calls they cost you.
Regressions after prompt changes
Every prompt tweak on a high-volume line is a risk. Zelto grades every call after every change, so regressions surface in hours with the example calls to prove it.
How Zelto works with Telnyx
Connect
Connect Telnyx natively and Zelto ingests calls as they complete — recordings, transcripts, and metadata from your voice AI agents.
Zelto listens and diagnoses
Every production call is graded against a rubric Zelto auto-learns from your traffic — your domain, your language, your definition of a good call. No setup, no scorecard to write.
Findings, with the fix drafted
Calls that fail for the same reason are clustered into one Finding, ranked by volume, with example calls, a drafted prompt fix, Slack alerts, and an optional Linear ticket.
Production traffic, not simulations.
Simulation tools grade synthetic conversations against scenarios you wrote. Zelto grades what actually happened with real callers on your Telnyxagents — because that's where the failures that matter live. Most teams are integrated in under 15 minutes.
Zelto + Telnyx
The questions teams ask before connecting. Answered honestly.
Other integrations
One week. One agent. Ten findings
Connect one production agent. Zelto listens, then walks you through ten findings with severity, examples, and fixes.
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