Use the "rhpp" command to view and configure RHPP settings.
View settings
msh> rhpp
Changing rhpp port number
msh> rhpp port [1024-65535]
The default is 59100.
Setting timeout
msh> rhpp timeout [30-65535]
The default is 300 seconds.
"RHPP" is an abbreviation of "Reliable Host Printing Protocol", which is the manufacturer-original printing protocol.