accessing a video server from other server in a computer

I install a server program in my computer. I can access my server from the internet. I use dialup internet connection. I have a video security server connected to my computer by the lancard I have a 5 port switcher with cat5 cables. there I connect my video server and a point of sale display. I can access all that from my computer localy. I am making a web page and postin in the server but I want to access the video server too from the internet. How I do that. If I use the IP of my ISP I connect to my computer server but I can't connect to the video server or the point of sale.

Help Please!

 

 

 

 

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