Telecommunication Use Code
| Code | Description | Comment | Version |
| ASN | Answering Service Number | | added v2.3 |
| BPN | Beeper Number | Retained for backward compatibility as of v 2.6 | added v2.3.1 |
| EMR | Emergency Number | | added v2.3 |
| NET | Network (email) Address | Retained for backward compatibility as of v 2.6 | added v2.3 |
| ORN | Other Residence Number | | added v2.3 |
| PRN | Primary Residence Number | | added v2.3 |
| PRS | Personal | Not tied to a location or role | added v2.6 |
| VHN | Vacation Home Number | | added v2.3 |
| WPN | Work Number | | added v2.3 |