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Reply To: What is BSIC?


Hi Atul,

Thank you for your contribution to this thread.

In the case of inter-MSC handover, MSC-A is the switching element. All call control (including CDR and signaling) remains in MSC-A for the entire duration of the connection, this is called the anchor principle, and of course the connection between MSC-A and MSC-B is maintained during this time. After the call is finished, all data related to MS from VLR-A is tranfered to MSC-B by mean of MAP messages. MSC-A cannot be out of the picture.

The LU will be executed only after the end of the call.