FIELD: information technology.
SUBSTANCE: invention relates to network communication technologies. Method comprises receiving, by a second mobility management network element, notice sent by a home subscriber server (HSS) or home location register (HLR), on cancelling registration of second mobility management network element as a service node of short messages service (SMS); cancelling, b second mobility management network element, registration of second mobility management network element in as SMS service node in HSS or HLR; and not cancelling, by second mobility management network element, evolved packet system (EPS) service for user equipment, deleting, by second mobility management network element, information on subscription relating to short messages of user equipment, receiving, by second mobility management network element, tracking area update request or combined tracking area update request for user equipment.
EFFECT: technical result is improved data transmission security.
16 cl, 14 dwg
