An Accessing Busy Resources service is adapted to receive subscription requests from clients for notification of when a busy resource is free, and to monitor network resources to determine if they are free. Upon notification, the Accessing Busy Resources service de-subscribes the client. The network...http://www.google.com.au/patents/US7865547?utm_source=gb-gplus-sharePatent US7865547 - System and method for accessing busy IP network resources
