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Reply To: Behavior of MS when changing LAC Cell ID

#68659
pix
Guest

hi pis,

upon changing LAC, the MS intiates a Location Area update (CH REQ -> IMM ASSIGNMENT -> SDCCH)

During the LAU process, the MSC may request a TMSI reallocation (optional, but often done), and will perform all the usual checks : ciphering, authentication)

regards
pix