Microsoft lync integration with siebel

Hi All,

we have customer who is looking for the lync integration with Siebel.

1.provide a applet button in siebel.

2.user clicks on the button.

3.depends on the record data(lets say email id) a lync window should launch and a call must be placed.

let me know if anybody worked on these or any suggestions are welcome.

also if any Open UI implementation would be great help.

Thanks and Regards

Rajesh