States

Call

queued → ringing → in_progress → completed

Terminal failures: failed, busy, no_answer.

Creates start in queued. TelDev is not a carrier; the control plane records state. The mocked Telnyx adapter does not advance live PSTN.

Message

queued → sending → sent → delivered

Terminal failures: failed, undelivered.

Creates start in queued.

Session

| Status | Meaning |

| --- | --- |

| open | Session exists; no agent stream |

| streaming | Agent set; stream_url is live on wss://rt.teldev.bot |

| ended | Stream or conversation closed |

Number

Seed and newly provisioned numbers are active.

Campaign approval

Approval is per MNO. cmp_12 is not approved on T-Mobile. Unknown MNO is rejected unless the campaign lists *. That is fail-closed: no proof, no send.