MEF 29 is a specification document developed by the Technical Committee of the MEF.
"There are many ways in which Service Provider technology can be deployed to support the UNI- to-UNI Ethernet Services Attributes specified in MEF 10.2 . The network between these UNIs can be broken up into smaller Ethernet Sub-Networks with defined interfaces between them. This document defines an abstract set of Ethernet Service Constructs that are widely ap- plicable regardless of how the UNI-to-UNI Network is broken down. Follow-on MEF specifica- tions that wish to define specific types of Ethernet Sub-Networks or interfaces can do so by re- ferring to and building upon this specification."