Voice AI calling in Japan.
A practical starting point for +81 calls, japanese and english, carrier budgeting, caller identity, and a production pilot.
$1,850.00 public route example
Twilio published mobile termination at $0.1850 per minute. This destination example excludes inbound service, numbers, taxes, surcharges, recording, and the AI stack.
Four checks for a Japan launch
Use this as an engineering handoff. Get a written carrier answer and qualified legal review where the call purpose or data handling requires it.
- 01
Identify the business and solicitation purpose before selling by telephone.
- 02
Stop solicitation and re-solicitation after the consumer refuses.
- 03
Publish the purpose for processing identifiable call content and recordings.
- 04
Test Japanese names, counters, dates, honorifics, and interruption behavior.
What still needs a carrier answer
The example is mobile termination. Confirm domestic number eligibility, caller identity, and local routing with the carrier.
edit the carrier assumptions →Inspect the real evidence
Export SIP, RTP, ARI, and media logs from a controlled pilot. Diagnose the failure locally, then measure end-of-speech to first playable audio.
Verify the Japan assumptions
Source review date: 2026-07-25. Carrier pages and regulations can change.