Server based Search- Exact match and Prefix match in Lync Server 2010

Server based Search- Exact match and Prefix match in Lync Server 2010

Guys,

We are using Lync Serer 2010 since long however you know how the server based search is work? Here are few scenarios; basically Server-based search usage can be configured by using the in-band provisioning setting, AbsUsage.

This in-band provisioning setting having three possible values:

1.    WebSearchAndFileDownload. IP phones (for example, Polycom CX700 IP desk phone) use server-based search, and Lync 2010 clients use GAL download. This is the default.

The Lync desktop client defaults to GAL download for the following reasons:

·       There may be temporary outages for the Address Book Service depending on the server maintenance schedule. When the Address Book Server is unavailable, all prefix and exact match searches fail.

·       Server-based search does not work in branch office resiliency mode.

2.    WebSearchOnly. Both IP phones and Lync 2010 clients use Server-based search.

3.    FileDownloadOnly. Both IP phones and Lync 2010 clients use GAL download.

Server-based search can be used for both exact and prefix searches. The exact and prefix match searches are different, and the various scenarios when the Lync client would perform an exact match search versus prefix match search.

The Lync client sends a SOAP query through HTTPs to the user’s Front End pool. Search results are returned in an XML format.

Exact Match Search

Exact match search is performed by the Lync client whenever it needs GAL contact data for a specific contact. In an exact match query, the Lync client requests the GAL contact data by using a SIP URL or email address. Passing a SIP URL or email address in the request ensures the GAL contact data returned is unique because the SIP URI and email address are both unique contact identifiers.

Prefix Match Search

Prefix search is invoked when a user initiates a search from the following:

·       The main UI search box.

·       The People picker dialog box (that can be opened, for instance, from the Conversation Window, the call forwarding dialog box, or call transfer).

When a prefix search is performed, the client sends a SOAP query with the search term and number of search results to be returned by the Address Book Service. Lync client shows the top 50 results whereas IP phones and Lync mobile clients show the top 20 results.

Thank you.