Setting up a Gigaset A510 IP phone with FreePBX

We are currently using FreePBX to handle about 70 polycom phones. Our phone server is running Asterisk.

What I would normally do was add an extension to the FreePBX system, and set up the phone that correlated the SIP and it would just work. ( not very knowledgeable )

But now I have a new phone; gigaset A510 and I have no idea how to set this up. Is there anyone who has experienced or know a tutorial online that I can use?