User-Network Interface
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User Network Interface (UNI) is a demarcation point between the responsibility of the service provider and the responsibility of the subscriber. This is distinct from an Network to Network Interface or NNI that defines a similar interface between provider networks.
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[edit] Specifications defining a UNI
[edit] Metro Ethernet Forum
The Metro Ethernet Forum's Metro Ethernet Network UNI specification defines a bidirectional Ethernet reference point for ethernet service delivery.
[edit] Optical Internetworking Forum
The Optical Internetworking Forum defines a UNI software interface for user systems to request a network connection from an ASON/GMPLS control plane.