Patent ID: 9258367
Filing Date: 2016-02-09
CPC Classification: H04L

Claim Text:
1. A method for managing, by a proxy server, communication sessions between entities in a communication network, the method comprising: registering an entity with a session control server in order for the entity to participate in communication sessions in the communication network; after registering the entity, conveying messages between the entity and the session control server that establish a communication session between the entity and the at least one other entity in the communication network; in response to establishment of the communication session, establishing a subscription between the proxy server and the session control server that enables the proxy server to be notified of events relating to a registration status of the entity, such that establishing the subscription is delayed relative to registering the entity; and after establishing the subscription, revoking the communication session between the entity and the at least one other entity in response to being notified of an event relating to the registration status that warrants revoking the communication session.