The HNB-GW provides the point of interconnect between a HNB or Femto Cell and a service provider’s core network. As well as presenting an Iu-CS and Iu-PS interface towards an MSC and SGSN respectively, the HNB-GW also terminates the IPSec tunnel which spans the Iuh interface between itself and the HNB. The HNB-GW is defined in the 3GPP ‘s Release 8 specifications.
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