Confirm permission
Server-held identity, spend limits, destination policy, and readiness, without claiming SIP OPTIONS proves PSTN reachability.
FOR HUMANS / YOUR AGENT, YOUR PERMISSION
You ask.
Your agent calls.
Imagine asking an assistant to book a restaurant. It should confirm the details, show you exactly what it is authorised to do, make one bounded call, and tell you what actually happened. This is a product design preview, not a live booking system.
ONE TASK, TWO EXPERIENCES
A simple request.
Real controls.
Humans give permission and receive an understandable outcome. Agents get a machine-readable mandate and telecom events. One does not impersonate the other.
YOU SAY TO YOUR ASSISTANT
“Call Example Restaurant and book a table for two this Saturday, between 7 and 8:30 PM.”
Before calling, the agent should establish which restaurant, the date, the party size and the name to use. If anything material is missing, it asks.
YOU APPROVE
- Purpose
- One restaurant reservation
- Destination
- One verified UK geographic number
- Duration
- Maximum two minutes
- Cost
- A fixed, explicit ceiling
- Deposit and card details
- Not authorised
- Retries
- Require renewed permission
Illustrative permission card only. No active approve button, payment, or call exists on this preview.
THE CONVERSATION
More than a dial tone.
A useful answer.
The final product must work whether the other end is a person, IVR, or autonomous AI. Dial-Tone should handle phone signalling; the requesting agent handles conversation and intent.
Listen and speak
Answer detection, interruptions, hold, DTMF, voicemail and call completion are distinct events, not guessed by a model.
Separate facts from claims
Did the network connect? What did the agent hear? Did the restaurant offer a booking reference? Was it independently verified?
Human-readable result
A clear outcome, any uncertainty, what the call cost, and whether a fresh instruction is needed.
THE PROMISE, NOT YET THE PRODUCT
Never claim a booking
we cannot prove.
A real restaurant booking, a successful telephone call, and a model-generated summary are different facts. The public preview does not place calls or process x402 payments.