IP communicator registering over WAN to CUCM

[fran19422]

I am trying out a centralized CUCM deployment.

I have IP communicator on a remote site that I want to register with my CUCM server at another site.

I have changed the IP Communicator "preferences - network - tftp setting" IP address to that of remote CUCM public IP address.

Now what port(s) do I need to open on the CUCM cluster's internet facing router to allow that connection ?

Is this all I need to do to enable network connectivity between IP Communicator and a remote CUCM ?

Thanks kindly.

[paolo bevilacqua · Accepted solution]

Connecting sofphone over the Internet directly is really not recommended.

You will meet many, many issues of one way voice and security as well.

If you want things to works sure and easy, use VPN.