I work for a University, and we have a Unity 4.0(3) server and two Call Managers running 3.3(3)sr1. I am getting ready to place them all behind our firewall, but I need to know if there needs to be any ports open for the Unity server to work. Or, d...

I am wanting to place both call managers and our unity servers behind our firewall, but I need to know what to put in our PIX 525 firewall to assure that the proper ports are open for our IP phones to access these servers. IOS on the PIX is 6.3(4). ...

We have a 7920 wireless IP phone that I've updated to the latest firmware (1.07). My problem is that on a few of our AP350's (3 that I known of), the 7920 will not register with the call manager. It will associate and authenticate, and I can even h...

I have a question, we have a Ciscoworks 2.2 server we just installed that is placed behind our firewall. It is on the same VLAN as our servers, which are also blocked from other internal VLAN's. Which ports need to be opened internally for the serv...