Home Active Directory User Account Attributes in AD: Part 2 Outlook LDAP Attributes (Phone/Notes Tab)

User Account Attributes in AD: Part 2 Outlook LDAP Attributes (Phone/Notes Tab)

User Account Attributes in AD: Part 2 Outlook LDAP Attributes (Phone/Notes Tab)

This article is the second in a series that offers a reference point between AD Attributes and their associated values displayed in Outlook. In this post, we explore the Phone/Notes Tab within Outlook and discuss the associated Outlook LDAP Attributes. On a semi-related note, we have included a comparison between a fairly typical VB and Powershell scripting example that demonstrates how to enumerate mandatory and optional attributes within the user class.

Outlook Attributes
Outlook Address Book General Tab – Ldap Attributes Mapping (Part 1)

ADUC Attributes
Active Directory Users and Computers – General Tab (Part 3)
Active Directory Users and Computers – Address Tab (Part 4)
Active Directory Users and Computers – Account Tab (Part 5)

Outlook LDAP Attributes: Mappings – “Phone/Notes” Fields

Here’s a mapping for Outlook LDAP Attributes within the Phone/Notes Tab:

[Move to General Tab]


Name in Outlook LDAP Attribute Format Attribute-ID
DisplayName displayName Single 1.2.840.113556.1.2.13
Business telephoneNumber Single
Business 2 otherTelephone Multi 1.2.840.113556.1.2.18
Fax facsimileTelephoneNumber Single
Assistant telephoneAssistant Single 1.2.840.113556.1.2.79
Home homePhone Single 0.9.2342.19200300.100.1.20
Home 2 otherHomePhone Multi 1.2.840.113556.1.2.277
Mobile mobile Single 0.9.2342.19200300.100.1.41
Pager pager Single 0.9.2342.19200300.100.1.42
Notes info Single 1.2.840.113556.1.2.81
Picture thumbnailPhoto Single 2.16.840.1.113730.3.1.35

How many phone numbers can be listed against each phone type attribute?

The primary phone number fields are only able to store a single value, whilst the otherXXXXX attributes are able to store multiple values. That is, a user may have multiple “otherTelephone” numbers stored as an array but only one primary “telephoneNumber”. In addition to the fields listed above, there are a number of less visible fields, such as otherMobile and so on.

I thought telephoneNumber was already mapped out in the General Tab?

The telephoneNumber attribute is mapped in two places: The Phone number field under the general tab, and under the Phone/Notes tab it is mapped to the Business field within the “Phone numbers” section.

I thought assistant was already mapped in the General Tab?

You’d think so wouldn’t you? No – this is not the case. I guess it may seem intuitive for some, but the assistant field under the Phone/Notes field actually maps to a phone number – the telephoneAssistant attribute. This would be where the Assistant’s phone number would be stored (seems logical, I guess).

How do I retrieve a complete list of all User Attributes?

If you’d like to establish exactly which attributes are exposed through the user class,

$Schm = [DirectoryServices.ActiveDirectory.ActiveDirectorySchema]::GetCurrentSchema();
($Schm.FindClass("user")).MandatoryProperties|select name,syntax
($Schm.FindClass("user")).OptionalProperties|select name,syntax

Stay tuned for Part three – I promise, we’ll stop talking about Outlook LDAP attributes and properties – more about User Attributes in general.