AT&T has been certified by the Metro Ethernet Forum’s (MEF) test lab and has passed the industry association’s most stringent MEF-14 evaluation for performance. The MEF-14 evaluation includes a set of 170 tests, such as an analysis of service performance for frame delay, frame delay variation and frame loss ratio, as well as bandwidth profile service attributes. AT&T received certification of its Ethernet Private Line, Virtual Private Line, and Private Line for Wide Area Network family of services.
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