MEF 37 is a specification document developed by the Technical Committee of the MEF.
"This document defines the updated version of the Abstract Test Suite for External Network Network Interface (ENNI) in accordance with the requirements and service attributes specified in the ENNI Phase 1 Metro Ethernet Forum Technical Committee document, MEF 26.
This document represents the updated versions of the former ENNI Basic ATS and ENNI Protection ATS documents. The original four parts of the project were resplit into two conformance testing levels in 2010. The MEF decided to prioritize test cases verifying a certain group of requirements, as documented in Appendix I. This document defines Abstract Test Cases covering these requirements."