Patent ID: 7899033

Claim:
A method comprising: receiving a pushed value associated with a party at a telecommunication network element from an event notification system, the pushed value being a function of a plurality of service pushed values associated with the party; receiving an incoming call for the party at the telecommunication network element after receiving the pushed value; conditionally invoking, with the telecommunication network element, an Internet Protocol Multimedia Subsystem (IMS) service for the incoming call based on the pushed value; and sending a subscribe message to the event notification system from the telecommunication network element, wherein, in response to the subscribe message, the event notification system: sends a plurality of subscribe messages from the event notification system to a plurality of services; receives a plurality of notification messages from the plurality of services, the plurality of notification messages comprising the plurality of service pushed values; determines the pushed value associated with the party as the function of the service pushed values; and pushes, to the telecommunication element, the pushed value in a notification message.