Print over the internet to Lanier LD015

I have a client with a Server 2008R2 Terminal Server, they are working from home, and have a Lanier LD015 Printer configured on the home lan, I configured their home firewall to allow Port 9100 through the firewall from the Static IP of the office only, forwarded to the IP of the printer. I then installed the Lanier on the Server, using the home IP (also static) This would not work, however, it works fine with an Epson c65 printer, which they used to have at home, anyone have any ideas? I need to solve this quickly for my client.

Thank!