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In the example below, an imaginary person Janne Teräslähti is the recipient of the message. When you hover over the name a window opens showing Janne's title and department. Green indicator color before Janne's name and next to Janne's profile picture also tell's that Janne has no appointments at this time. We can also start a Lync-conversation with Janne from this hovering info box.
If you double-click Janne's name, a window with more information opens: 
This way you can find a contact's phone number quickly and easily.
Henkilötietojen "pikanäkymä"