MEF 91 refers to Performance Tiers (PT0.3 to PT4) and associated Performance Objectives. However, with Geosynchronous Earth Orbit (GEO) satellites, it is only possible for Carrier Ethernet services to meet the performance objectives of PT4 CoS Label L, and only with FD (95th percentile).
This amendment to MEF 91 ‘Carrier Ethernet Test Requirements’ adds references to MEF 23.2.2 (and MEF 23.2) in order to include Performance Tier (PT5) for satellite-based services to the existing set of Performance Tiers (PT0.3 through PT4).
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