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Diameter S6a CLR to MME on transition to 3G registration

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An UE is registered in roaming in LTE network in combined registration (in both MME and VLR).
When the UE returns to its home network in 3G network, does the home network generate both MAP-CANCEL (to the previous VLR) and CLR (to the previous MME)?
Is it implementation dependent in the Home network? (HLR & HSS)
If only MAP-CANCEL is generated, when the MME will remove the IMSI records from its internal database?

posted Jun 18, 2018 by Michael Semama

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