# Telephone

## Fields

| Field | Description | Type | Min/max | Notes |
|  --- | --- | --- | --- | --- |
| [Customer](/connectivity/docs/api-reference/customer)/`Telephone` | Booker telephone details. | object | 0..1 | The element is omitted and absent from the payload. Make sure your implementation accepts and processes reservations when the field is absent. |
| `Telephone`/`@PhoneNumber` | Booker telephone number. | string | 0..1 | - |


## Related endpoints

* [/ota/OTA_HotelResNotif](/assets/ota-resnotif.99acf9eadea7e54a11ed96b74a5df2555a0948fb44d41006f828b6ffa2cfc6d8.53c68abe.md)
* [/ota/OTA_HotelResModifyNotif](/assets/ota-resmodifynotif.94d47fd99a32c125da2793014a9f2f5a8b6788e218ecfd4fbcd5487cd7c0a264.53c68abe.md)