Two-Way Voice Communications among Responding Agencies

At an incident site, voice communications among the diverse response agencies can be hampered by lack of direct connectivity between their discrete communications systems. Methods of integrating these communications systems to allow on-site direct communications between incident responders, regardless of their legacy systems, are advancing. Trunked radio systems provide a partial solution to this problem. In recent years a large number of options have become available for sending voice and free text messages over a host of media including radio, cellular telephone and Internet services.