# Phone

## Fields

| Field | Description | Type | Min/max | Notes |
|  --- | --- | --- | --- | --- |
| [Phones](/connectivity/docs/api-reference/phones)/`Phone` | Phone number details for a contact person/point. | object | 0..1 | - |
| `Phone`/`@Extension` | The extension number that must be dialled in addition to the `@PhoneNumber`. | string | 0..1 | Only accepted when `@PhoneTechType="1"`. |
| `Phone`/`@PhoneNumber` | The international phone number. | string | 0..1 | Format: `\+[0-9]+` |
| `Phone`/`@PhoneTechType` | The type of phone line/device. | [PTT](/connectivity/docs/codes-ptt) | 0..1 | - |


## XML


```xml
<Phone
  Extension="2"
  PhoneNumber="+31666666666"
  PhoneTechType="1" />
```

## Related endpoints

* [/ota/OTA_HotelDescriptiveContentNotif](/connectivity/docs/ota-hoteldescriptivecontentnotif)