The originating dialler announces the call as it dials. This is an HTTP request. It is not a SIP header.The business pays 2 credits for each signed announcement. The terminating telco does not pay to verify.Get a publish token from the dashboard. The token is shown once. Store it on the dialler. If you lose it, revoke it and mint a new one.from must be an approved number you own. to is the callee. CallerAPI uses to only to bind the announcement, then drops it.The announcement is valid for 90 seconds. Announce at dial time, not earlier. A successful response includes credits_charged: 2. Not enough credits returns 402.Do not put the publish token in a SIP header. Do not send it to the terminating switch.The number must be approved before you can announce. A number still in review returns 403. Modified at 2026-09-21 16:59:48
