Which reference point is used between the UTRAN and serving gateway for user plane tunneling when a direct tunnel is established?

Which reference point is used between the UTRAN and serving gateway for user plane tunneling when a direct tunnel is established?

Build Your Dreams
PassGuide 650-082

Which reference point is used between the UTRAN and serving gateway for user plane tunneling when a direct tunnel is established?

Build Your Dreams
PassGuide 650-082

A.
S12

B.
S5

C.
S4

D.
S8a



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