I'm trying to use the asterisk zimlet, but it doesn't really do anything. Deploying went well, I configured the zimlet with the IP of my asterisk-server and the IP of the zimbra-server, but when I'm using the zimlet simply nothing really happens.
A little window is popping up, informing me that it is dialing and then it can't bind the IP of my asterisk-server.
The logs (zimbra and asterisk) show also nothing about this connection and I haven't a firewall installed.

I'm using Zimbra v.5 on Ubuntu 6.

I hope someone can help me, thanks.