The real audio chain
Telephony, speech input, the model, speech output and conversation flow are tested together.
Operator-run audits · First live audits passed
We call your voice agent and hand you the proof.
Quality Lab places authorized test calls in German against your number, measures reachability, answer latency, dead air and call flow, then hands you an audit report with a sealed evidence package. Every file in it carries a SHA-256 checksum, including the call recording.
Request an audit
No self-service: an n3tz operator prepares every audit and supervises it personally.
A demo is not a regression test
One small change can reshape the whole call.
A new prompt, another model or a changed tool schema can silently break bookings, transfers and safety rules. Text evals cannot see what happens on the phone line.
Repeatable scenarios
The same approved scenario version runs before and after a change.
Sealed evidence
The audit report and evidence package carry SHA-256 checksums. You can recompute every one yourself.
How an audit runs
From first contact to the sealed evidence package.
- 01
Request and scenarios
Tell us about your setup. Together we define which scenarios run against your number.
- 02
Authorize the target
You authorize the target number and time window in writing. No call starts without it.
- 03
Supervised test calls
An operator runs the German test calls on a dedicated host, separate from the production n3tz suite.
- 04
Report and evidence
You receive the audit report and the sealed evidence package: recording, transcript, event log, each file with a checksum.
Proof, not a screenshot
Every checksum is yours to recompute.
The report separates measurements, verdict and evidence. Missing evidence never counts as success. What Quality Lab deliberately does not check today: whether your agent said the right thing. That check is planned, but not built yet.
1
Measured facts
Reachability, answer latency, dead air, turn count and a clean call teardown.
2
Deterministic verdict
Bounds fixed in advance decide traceably between pass and fail.
3
Sealed evidence
Recording, transcript and event log per call as a digest-verified evidence package.
Controlled testing
Test calls need hard boundaries.
Every audit runs only with written authorization, inside the agreed time window and under personal supervision by an operator. Execution lives on a dedicated host, separate from the production n3tz suite.
Authorized targets
No arbitrary production numbers and no unlimited dialing.
Isolated audit host
Test runs execute on a dedicated host (n3tz-quality-lab-1), separate from the rest of n3tz operations.
Human supervision
Every run stays deliberate. An operator prepares it, watches it and reviews the report.
For teams shipping voice AI
Built for the gap between “it works” and “it can go live.”
01
Voice AI teams
Catch regressions before releases and reproduce the same evidence after a fix.
02
Agencies
Test client agents against agreed scenarios and hand over results that can be traced.
03
Product and QA leads
Review the outcome, phone path and control boundaries together, not just a transcript.
Personally supervised
Put your voice agent in the Quality Lab.
Tell us briefly what you run. A person from n3tz replies personally, clarifies scenarios, process and price in a call and tells you honestly if an audit makes no sense for you yet.
Frequently asked questions
What to know before requesting.
Which voice agents can Quality Lab audit?
Any agent that is reachable through a real phone number and that you authorize us to call in writing. Test calls run in German. Agents without a phone number, for example web-widget or chat only, cannot be tested today.
Why real phone calls instead of text simulations alone?
Text tests are faster and remain important. They cannot reveal SIP failures, speech recognition, speech output, interruptions or phone latency. Quality Lab adds a controlled end-to-end path.
Does Quality Lab record the test calls?
Yes. The evidence package for each call contains the recording, the transcript and the event log, every file with its own SHA-256 checksum. Only the authorized test call is recorded, inside the agreed time window.
Does Quality Lab also check what my agent says?
Not today. We measure reachability, timing and technical call behavior. Whether your agent says the right thing is yours to judge with the recording and transcript. Automated content checks are planned, but not built yet.
You build voice agents yourselves. How independent is an audit?
Full disclosure: n3tz runs its own voice agent, Griffi, for German trade businesses, not a competing product to voice-AI platforms. Audits run on a dedicated host, separate from production, and you can verify every checksum yourself. For test scripts and internals we offer a mutual NDA.
What does an audit cost?
There is no fixed pricing model yet. We clarify scope and price in the first call, honestly and without obligation.
Is the request a newsletter signup?
No. Your request triggers exactly one personal reply. You receive n3tz updates only if you enable the separate option and then confirm your email address.
Your voice agent deserves more than one good demo call.
Request a supervised audit. We will get back to you with a concrete proposal.
Request an audit