@misc{rfc3301,
    series =    {Request for Comments},
    number =    3301,
    howpublished =  {RFC 3301},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC3301},
    url =       {https://www.rfc-editor.org/info/rfc3301},
    author =    {Bernard Sales and Paolo Crivellari},
    title =     {{Layer Two Tunnelling Protocol (L2TP): ATM access network extensions}},
    pagetotal = 19,
    year =      2002,
    month =     jun,
    abstract =  {L2TP {[}RFC2661{]} specifies a protocol for tunnelling PPP packets over packet based networks and over IP networks in particular. L2TP {[}RFC2661{]} supports remote access by ISDN and PSTN networks. This document augments the procedures described in {[}RFC2661{]} to further support ATM SVC or PVC based access networks. The extensions defined within this document allow for asymmetric bi-directional call establishment and service selection in the ATM access network.},
}