Patent ID: 8346720
Filing Date: 2013-01-01
Classification: H04L

Abstract:
1. An information update system comprising: a plurality of application server apparatuses to serve a subscriber with respective application services through a corresponding SIP (session initiation protocol) server; and a home subscriber server apparatus to store information regarding the subscriber and connected to the application server apparatus and to the SIP server, wherein each of the plurality of application server apparatuses comprises a transmitting unit to transmit an update request signal to the home subscriber server apparatus for requesting updating of the information regarding the subscriber, the update request signal including update contents, and the home subscriber server apparatus comprises: each of the plurality of application server apparatuses adds an identifier for identifying an updating method to the update request signal to be transmitted to the home subscriber server apparatus, and the selector selects the updating method identified by the identifier added to the update request signal out of the plurality of updating methods, and further wherein