Click-to-dial software with Gigaset phones


I’m using a PBX running with Asterisk.

I’m searching a while now for software to make it possible to dial from Outlook.
When dialing my Gigaset DE900 IP Pro Phone must be automatically ringing and i can make a call.
Does anyone knows if it is possible and what software i can use?

Best regards,
Joost Lauwen