Yannick implemented a small script displaying the status information on Ekiga.net.
In order to use it, simply add this to your page :
<script src="http://www.ekiga.net/status/presence.php?user=YOUR_ID_ON_EKIGA.NET"></script> where YOUR_ID_ON_EKIGA_NET is simply your username.
You can see how it looks like on my blog.
If you click on the button while the user is online, it should ask Ekiga to call the correct SIP address. This has been tested with Firefox, and it works well.