I have a Samsung iDCS phone system with Voice Mail that I can access via Telnet using the network port and the private IP I assigned it. I used a 1-to-1 NAT on my firewall and assigned it a public IP. Using this IP it will not connect.
I tested the Telnet service through the firewall using another server with the same setup and was successful.
Why can I not connect to my phone system this way?