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Reply To: Call flow for international Roaming

#38080
Jacck Sparrow
Guest

MAP-Process Unstructured SS Request is the MAP Message used for USSD Processing.

in HLR IMSI Related to MSISDN

in MSC/VLR IMSI related to MSRN

IMSI is used as Common Reference between HLR and MSC For Call routing.Obviously MSC Provides MSRN Per IMSI Based Query.
And this is Temprory until that call.

Mapping TWO IMSI in VLR-Not Possible.This is out of GSM STandards and I never seen such a thing.But Mapping can be possible in HLR.

Rgds