| Code | Display | Definition |
| phone | Phone | The value is a telephone number used for voice calls. Use of full international numbers starting with + is recommended to enable automatic dialing support but not required. |
| fax | Fax | The value is a fax machine. Use of full international numbers starting with + is recommended to enable automatic dialing support but not required. |
| email | Email | The value is an email address. |
| pager | Pager | The value is a pager number. These may be local pager numbers that are only usable on a particular pager system. |
| url | URL | A contact that is not a phone, fax, pager or email address and is expressed as a URL. This is intended for various personal contacts including blogs, Skype, Twitter, Facebook, etc. Do not use for email addresses. |
| sms | SMS | A contact that can be used for sending an sms message (e.g. mobide phones, some landlines) |
| other | Other | A contact that is not a phone, fax, page or email address and is not expressible as a URL. E.g. Internal mail address. This SHOULD NOT be used for contacts that are expressible as a URL (e.g. Skype, Twitter, Facebook, etc.) Extensions may be used to distinguish "other" contact types. |