Configuration
Feature flag, defaults, and limits that govern the phone-numbers module.
Limits and defaults
| Setting | Value | Effect |
|---|---|---|
| Feature flag | phone_numbers | 403 with "feature":"phone_numbers" when off |
| Name length | 255 characters | 422 beyond it |
List page | default 1 | clamped to a minimum of 1 |
List per_page | default 15, max 100 | clamped into that range |
| Fallback message / description length | 1,000 characters | 422 beyond it |
| Fallback SIP URI length | 255 characters | 422 beyond it |
| Fallback number / caller ID format | E.164 (+ then 7–15 digits) | 422 when malformed |
| Webhook URL length | 2,048 characters | 422 beyond it |
| Webhook secret length | 2,048 characters | 422 beyond it |
| Webhook timeout | 1–300 seconds | server.timeoutSeconds |
| Webhook header value length | 4,096 characters | 422 beyond it |