A METHOD AND APPLICATION OF ACQUIRING THE CIRCUIT SWITCHED DOMAIN INFORMATION FOR THE IP MULTIMEDIA SUBSYSTEM APPLICATION AND A METHOD, APPARATUS AND SYSTEM FOR CHANGING THE CIRCUIT SWITCHED DOMAIN INFORMATION

摘要

A method and application of acquiring the circuit switched domain information for the IP multimedia subsystem application are provided, the home subscriber server HSS receives the inquiry order from the application server AS through the sh interface; the HSS returns the response message according to the inquiry order, and it carries the user circuit switched domain information requested by the AS in the response message. Or, the HSS receives the subscribing request transmitted by the AS through the sh interface; the HSS records the subscribing relationship, and transmits the notification message to the AS when the user circuit switched domain information changes, which carries the user circuit switched domain information subscribed by the AS. The AS applies the user circuit switched domain information to the IP multimedia subsystem domain based on the service logic. Further more, a method, system and apparatus for changing the circuit switched domain service information are also provided. In the case of the current user subscribes both of the IMS domain and the CS domain and after the IMS domain service information updates, it can set the user CS domain service information related to the user IMS domain service information in phase, ensure the consistent of the two domains service setting, and improve the service experience of the user.