point-to-point link
Click on the red underlined text to get to the source
... ISO's OSI Model) protocol
information over point-to-point links; it also provides ways to
test and configure lines and the upper level protocols on the
OSI Model ...
... Perkins, D., "The Point-to-Point Protocol: A Proposal for Multi- Protocol Transmission of Datagrams Over Point-to-Point Links", RFC 1171(-> 1331(-> 1548(-> 1661std51))), CMU, July 1990. ...