MEDIATOR BASED ARCHITECTURE FOR FIRST RESPONDER INTEROPERABILITY SYSTEMS (FRIS)

A communication server has a message transfer unit that transfers messages between users operating under different, potentially non-compatible communication systems. A translator is connected to the message transfer unit. The translator translates messages sent to the message transfer unit into formats compatible with the different communication systems. A registration unit is used to associate communication systems with an incident. Communications between the different communication systems is restricted by incident and by registration. A voice/data mediator is used to conduct communication sessions through the message transfer unit. The communication sessions are conducted by the voice/data mediator between participants that are designated by a user. The participants are selected from users within communication systems that are registered with an incident.