CENTRAL REGISTRATION CALL FOR protocol to synchronize information on your calls

摘要

The present invention relates to a system comprising a communication network (300) with at least a serving session network node, through which communication initiation requests of the communication network are routed, and an application services providing network node (420), which interfaces with the serving session network node (100). The application services providing network node (420) is configured for providing functions related to a group of several terminal devices (10, 11, 15) of one user. A communication initiation request is addressed to the user on the basis of a user related identifier associated with the group of several terminal devices (10, 11, 15) and comprised by the communication initiation request. A protocol network node is configured for registering protocol information about a communication session upon reception of a detection signalization indicating the communication initiation request to the user having the corresponding service available. Such a system allows to have synchronized call protocol information in short term.