Bootstrapping Server Function
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A Bootstrapping Server Function (BSF) is an element in the Cellular network which delivers functions to authenticate user equipment for additional services as Mobile TV and others.
BSF is standardised in recent versions of 3GPP Standards: GAA (Generic Authentication Architecture) und GBA (Generic Bootstrapping Architecture), and 3GPP TS 33.919, 33.220 24.109, 29.109