Go to the following web sites for general information about PPP:
For ANU PPP information, go to the PPP repository of Australian National University, http://pserver.samba.org/cgi-bin/cvsweb/ppp/.
For technical information, FAQs, discussions about Solaris system administration, and earlier versions of PPP, go to Sun Microsystems' system administrators' resource, http://www.sun.com/bigadmin/home/index.html.
For modem configuration and advice about many different implementations of PPP, refer to Stokely Consulting's Web Project Management & Software Development web site: http://www.stokely.com/unix.serial.port.resources/ppp.slip.html.