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Reply To: Routing area Update



you should read the 3GPP documents I pointed out earlier ^^

3GPP 23.060 Inter SGSN Routeing Area Update

The new SGSN sends SGSN Context Request (old RAI, TLLI, old P TMSI Signature, New SGSN Address) to the old SGSN to get the MM and PDP contexts for the MS.