# 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.014078d5d8ed724cd2f52725ac5975843152adbc27b610bb193f64923d90addd.53c68abe.md)
* [/ota/OTA_HotelResModifyNotif](/assets/ota-resmodifynotif.0e3269d9ffe7c0b2f5a9c19f5fff358932675dd9802dad4f9e2ab9423765349f.53c68abe.md)