Compuprint 3056 Network Interface Tools - Manual (Page 6)

6
DHCP.You can also change the default “Port Name” if necessary. And
then click the “Next” button.
5.Select the “Custom” and click the “Settings” button.
6. Select the “RAW” in “Protocol”, and enter the number “9900” into
the item “Port Number”. And then click “OK” button.