ppp 2.4.4rel-10ubuntu2.8.10.1 (amd64 binary) in ubuntu intrepid

 The Point-to-Point Protocol provides a standard way to transmit
 datagrams over a serial link, as well as a standard way for the machines
 at either end of the link to negotiate various optional characteristics
 of the link.
 .
 This package is most commonly used to manage a modem for dial-up or
 certain kinds of broadband connections.