@misc{rfc5143,
    series =    {Request for Comments},
    number =    5143,
    howpublished =  {RFC 5143},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC5143},
    url =       {https://www.rfc-editor.org/info/rfc5143},
    author =    {Luca Martini and Jeremy Brayley and John Shirron and Stephen Vogelsang and Andrew G. Malis},
    title =     {{Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) Circuit Emulation Service over MPLS (CEM) Encapsulation}},
    pagetotal = 24,
    year =      2008,
    month =     feb,
    abstract =  {This document describes a historical method for encapsulating Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) Path signals for transport across packet-switched networks (PSNs). The PSNs explicitly supported by this document include MPLS and IP. Note that RFC 4842 describes the standards-track protocol for this functionality, and new implementations must use RFC 4842 rather than this document except when interoperability with older implementations is desired. This memo defines a Historic Document for the Internet community.},
}