US Patent 7751797 Systems and methods for providing presence information

Systems and methods for providing presence information to dispatch stations are provided. Presence information regarding a dispatch station in a first network can be provided to a dispatch station located in a second network using a private call alert with a “Do Not Alert” flag set. A dispatch processor in the first network can include a presence notification list, which identifies the dispatch station in the second network that should be notified of changes in the presence information for the dispatch station in the first network.