Epson EpsonNet C82391 Series Administrator's Manual page 246

4. The following screen appears. The address you set here
becomes the port for Internet printing. Make the settings
described below.
Enter Printer URI:
Enter the target printer's URI up to 49 characters. The URI you
set here must be same as the IPP URL you have set for the IPP
setting screen in EpsonNet WebAssist. Do not use the
following characters; | \ [ ] { } < > # " `
Format: http://the IP address of the printer:631/the printer
name
Example: http://192.168.100.201:631/EPSON_IPP_Printer
Use Proxy:
When using the proxy server, select this box and enter the
Proxy Server Name and Port Number. All communication is
done via the proxy server.
Enter Proxy Server Name:
Enter the proxy server name or the IP address of the proxy
server. You can enter up to 256 characters, but only 127
characters are valid. Do not use the following characters; | \
[ ] { } < > # " `
13-4
EpsonNet Internet Print Utility