---
schema_version: "1"
id: 5cff81c0b93211586d3810c50bb82c627878b0e4dc26fdf1d61ad06d69504493
title: XTN - Extended Telecommunication Number
collection: legacydeveloper
version: current
locale: en-us
portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/life_sciences_dev_guide/map_hl7_XTN.md
canonical_url: https://developer.salesforce.com/docs/atlas.en-us.life_sciences_dev_guide.meta/life_sciences_dev_guide/map_hl7_XTN.htm
source_site: developer.salesforce.com
content_type: documentation
content_hash: 9b53e60fee8fa7910651c8e8ebced231ea6700e63f33efd5481f3890f24f4990
description: The Extended Telecommunication Number (XTN) HL7 segment maps to the ContactPointPhone object in Salesforce.
---
# XTN - Extended Telecommunication Number

The Extended Telecommunication Number (XTN) HL7 segment maps to the ContactPointPhone object in Salesforce.

## HL7 V2.3 - Clinical Data Model Mapping

Here’s how the segments defined by HL7 V2.3 for XTN map to fields in Salesforce standard objects.

![Note](https://developer.salesforce.com/docs/atlas.en-us.life_sciences_dev_guide.meta/life_sciences_dev_guide/images/icon_note.png)

#### Note

Only the segments supported by Salesforce are mentioned below.

Table 1. XTN - Salesforce
| XTN | Salesforce Field | Type | Notes |
| --- | --- | --- | --- |
| XTN.1 - Telephone Number | ContactPointPhone.Telephone​Number | Phone | N/A |
| XTN.2 - Telecommunication Use Code | Contact​Point​Phone​.Usage​Type | Picklist | N/A |
| XTN.2 - Telecommunication Use Code | Contact​Point​Email​.Usage​Type | Picklist | N/A |
| XTN.3 - Telecommunication Equipment Type | Contact​Point​Phone​.Phone​Type | Picklist | N/A |
| XTN.4 - Email Address | Contact​Point​Email​.EmailAddress | Email | N/A |
| XTN.6 - Area/City Code | Contact​Point​Phone​.AreaCode | String | Some systems may break down the phone number into multiple components, such as country code, area code, local number, extension, and so on. In such cases, the full number may have to be assembled. |
| XTN.8 - Extension | Contact​Point​Phone​.ExtensionNumber | String | N/A |