I have an HP7310 network attached.  Looks like it uses port 9100

I want to print to it.  And from my Asterisk at home server.

I see that I do not have the "Printing Support" group installed.  I guess this would be the first set.

Then I see http://hpinkjet.sourceforge.net/hplip_readme.html

Is this driver included in the Centos repos?

There are a number of caveats.

Of course, for me, the biggest is need to do a make.  I bet the AAH build doesn't have what that will take!