So I've read a lot of articles about installing Microsoft Lync, and desided to go for it. I only need the messenger part (calling from pc to pc with video). I do not need the IP/SIP telephoni part of Lync. My problem: It works fine internal. But external users can only write to each other. When they try to call, the user recieving the call, cannot answer it, and gets a "network error", when he clicks the answer button.
I have followed this guide:
And one thing that you should know. I have only install Lync on one server. Not 2. I have a dedicated public ip for Lync, where I can forward the traffic to the lync server throug a Cisco Asa 5505.
Any ideers ?