> ## Documentation Index
> Fetch the complete documentation index at: https://docs.telegent.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Phase 4 — Production Cutover

> Move the partner to production credentials, provision the first live number, and confirm monitoring is in place.

**Goal:** Move the partner to production credentials, provision the first live number, and confirm monitoring is in place.

***

## Checklist

| # | Task                                                                                                     | Owner    | Notes                                     |
| - | -------------------------------------------------------------------------------------------------------- | -------- | ----------------------------------------- |
| 1 | Production `AccountKey` and `AccountSecret` issued.                                                      | Telegent | —                                         |
| 2 | Production webhooks confirmed reachable from Telegent infrastructure.                                    | Joint    | —                                         |
| 3 | Production Message Route + Voice Route created (partner-owned going forward).                            | Partner  | Joint call for first-time setup if needed |
| 4 | First production number provisioned end-to-end (Product → Package → Subscriber → Number → Subscription). | Partner  | Capture MSISDN + TNID                     |
| 5 | First production outbound SMS sent and delivered.                                                        | Joint    | —                                         |
| 6 | First production inbound SMS received and parsed.                                                        | Joint    | —                                         |
| 7 | Partner-side monitoring / alerting in place (webhook failures, token expiry, error rates).               | Partner  | —                                         |
| 8 | On-call escalation path documented (who pages whom, what hours, how).                                    | Joint    | —                                         |
| 9 | Go-live sign-off.                                                                                        | Joint    | Date + initials                           |

***

### First Production Number — End-to-End Flow

The first live number must be provisioned in this exact dependency order:

<Steps>
  <Step title="Create Product">
    `POST /v1.0/products` — defines what you're selling (eSIM, data, SMS bucket, etc.)
  </Step>

  <Step title="Create Package">
    `POST /v1.0/packages` — bundles one or more Products into a priced offering
  </Step>

  <Step title="Create Subscriber">
    `POST /v1.0/subscribers/create` — the end user who will own the number
  </Step>

  <Step title="Provision Number">
    `POST /v1.0/numbers/provision` — assign the number to the Subscriber and Account

    Save the `PhoneNumberAssigned` (MSISDN) and `PhoneNumberId` (TNID).
  </Step>

  <Step title="Create Subscription">
    `POST /v1.0/subscriptions` — links the Subscriber + Number + Package and starts billing
  </Step>
</Steps>

***

<Check>
  **Phase complete when:** First production message has flowed both directions, monitoring is live, and the escalation path is written down.
</Check>

***

<CardGroup cols={2}>
  <Card icon="arrow-left" href="/onboarding/phase-3" title="Previous: Phase 3 — API Walkthrough & Testing">
    Sandbox testing sign-off
  </Card>

  <Card icon="arrow-right" href="/onboarding/phase-5" title="Next: Phase 5 — Post-launch">
    First 30 days stabilization
  </Card>
</CardGroup>