Presence Data Source and Category Instance ID

Enhanced presence data of the same kind can be published from various data sources. For example, a presence state can describe the status of a user, a device used by the user, or a meeting scheduled for the user. In Microsoft Lync 2010, they are represented by a user state, a machine state, a phone state, and a calendar state, respectively. Each corresponds to state category instance identified by a unique instance ID.

Also, contact information is assembled from various data sources including Active Directory service, Address Book Server, and the user. In Lync 2010 the contact information are published and subscribed to in pieces that are contained in different contactCard category instances identified by their instance IDs.

In Lync 2010, instance IDs are also used to identify different types of publications of the same presence data. For example, a static user state category instance has an instance ID different from that of a time-bounded user state category instance.

The following table lists the instance IDs of the category instances that are used by Lync 2010 and that can be subscribed to remotely.

Note

The LSxx[MD5(key)] notation in the expression of an instance ID means the xx least significant bits of the MD5 hash of a given key.

Category name	Instance ID	Category data
contactCard	0	User identity as specified in the underlying Active Directory domain service, including the display name and e-mail address. This is a read-only category instance.
	0x1	User-specified contact information through the Lync Options dialog box, including the user-specified phone numbers.
	0x2	User properties that include the user’s work or home address.
	0x3	Contact data obtained from the Address Book Services, including a user's title, company name, office location, and available telephone numbers.
	0x4	Server-provisioned user-specific application data, such as the unified communications-enabled voice mail URL.
	0x5	Presentity information
	0x6	The title and office location of the user.
state	0	Static aggregate state
	0x1	User-boundeded aggregate state
	0x100000000	User-bounded aggregate machine state
	0x20000000	Static user state
	0x24000000	Time-bounded user state
	0x30000000|LS28[MD5(GRUU)]	Machine state. The 4 most significant bits of this instance ID value hold a value of 3 and the 28 least significant bits contain the 28 least significant bits of the MD5 hash of the device GRUU value.
	0x40000000|LS28[MD5(SMTP address)]	Calendar state for a meeting. The 4 most significant bits of this instance ID value hold a value of 4 and the 28 least significant bits contain the 28 least significant bits of the MD5 hash of the user’s SMTP address.
	0x50000000|LS28[MD5(SMTP address)]	Calendar state containing an activity for an OOF meeting. The 4 most significant bits of the instance ID value hold a value of 4 and the 28 least significant bits contain the 28 least significant bits of the MD5 hash of the user’s SMTP address.
	0x60000000|LS28[MD5(SMTP address)]	Calendar state containing an activity for an OOF message. The 4 most significant bits of the instance ID value hold the value of 4 and the 28 least significant bits contain the 28 least significant bits of the MD5 hash of the user’s SMTP address.
	0x70000000|LS28[MD5(TEL URI)]	Phone state for a RCC call. The 4 most significant bits of the instance ID value hold the value of 7 and the 28 least significant bits of the instance ID value correspond to the 28 least significant bits of the MD5 hash of the TEL URI of the RCC phone set.
	0x80000000|LS28[MD5(SIP URI,GRUU)]	Phone state for a VoIP call. The 4 most significant bits of the instance ID value hold the value of 8 and the 28 least significant bits correspond to the 28 least significant bits of the MD5 hash of a comma-separated string consisting of the user’s SIP URI and the GRRU of the device in use. An example of such instance ID is 0x898E1BEB.
	0x90000000|LS28[MD5(PSTN URI,GRUU)]	Phone state for a PSTN phone call. The 4 most significant bits of the instance ID hold the value of 9 and the 28 least significant bits of the instance ID value correspond to the 28 least significant bits of the MD5 hash of a comma-separated string consisting of the PSTN Uri and the GRUU of the PSTN phone set.
calendarData	0	Calendar data for working hours.
	0x40000000|LS30[MD5(Mailbox URI)]	A calendar period as a contiguous block of free-busy time slots. The two most significant bits of the instance ID value hold the value 4 and the 30 least significant bits correspond to the 30 least significant bits of the MD5 hash of the URI of the mailbox from which the calendar data is obtained.
note	0	Personal note that can be set by the user.
	0x40000000|0x00000000|LS28(MD5(Mailbox URI)]	Static OOF message as provisioned from the Microsoft Exchange store. The 4 most significant bits of the instance ID hold the value 4 and the 28 least significant bits are assigned the 28 least significant bits of the MD5 hash of the URI of the mailbox from which the OOF message is obtained
	0x40000000|0x40000000|LS28(MD5(Mailbox URI)]	Time-bounded OOF message as provisioned from the Microsoft Exchange store. The 4 most significant bits of the instance ID hold the value 4 and the 28 least significant bits are assigned the 28 least significant bits of the MD5 hash of the URI of the mailbox from which the OOF message is obtained
services	0	Presence capabilities of the supported modalities
device	LS32[MD5(GRUU)]	Device information. The instance ID value is the 32 lowest significant bits of the MD5 hash of the device GRUU.