METHOD FOR REGISTRATION OF A PLURALITY OF PERMANENTLY REGISTERED USERS IN AN IMS SUBSYSTEM OF AN NGN SYSTEM

摘要

A method to improve the registration of "Permanently Registered Users" (User1, User2,... User 5OO) in an NGN - IMS subsystem. The permanently registered users are coupled to the IMS subsystem via a group device (AGW1, IP-PBX, SIP/H.323 GW) that is registered in the IMS subsystem as a dedicated IMS virtual user by means of its IMPI/ IMPU identifier. The HSSA/UPSF server is then allowed to download the user profiles in bulk. This results in fewer loads on the IMS and in a shortened start-up time of the group device(s).