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Backup communications systems for CALWAS alerts include: • CESFRS - California Emergency Services Fire Radio System • CESRS - California Emergency Services Radio System • CLEMARS - California Law Enforcement Mutual Aid Radio System • CLERS - California Law Enforcement Radio System • CLETS - California Law Enforcement Telecommunications System NAWAS is an integral part of the tsunami alerting system. Reports of major earthquakes occurring at any point in the Pacific Basin, which may generate seismic sea waves, are transmitted to the Honolulu Observatory for evaluation. The Observatory staff determines action to be taken and relays it over the NAWAS circuits to inform the West Coast states. The State NAWAS circuit is used to relay the information to local Warning Points in coastal counties. This information is also transmitted to local jurisdictions over appropriate radio systems, teletype and telephone circuits to ensure maximum dissemination. 3.10.7 CALIFORNIA PUBLIC SAFETY MICROWAVE NETWORK (CAPSNET) For more than 50 years, the State's radio systems have relied on the State-owned and operated California Public Safety Microwave Network (CAPSNET) to provide critical communications links allowing law enforcement, fire and critical infrastructure support personnel to remain in constant contact with their dispatch centers, backups and chains of command during routine operations and during times of crisis and disaster. In the event of a major disaster, it is likely to be the only State communications network still operating as it is the only way to get emergency radio traffic from many remote mountaintop transmitter sites to distant dispatch centers. It is a vital backup link throughout the State for all critical emergency messages due to potential overloading and failure of commercially provided carrier networks. 3.10.8 OPERATIONAL AREA SATELLITE INFORMATION SYSTEM (OASIS) The Operational Area Satellite Information System (OASIS) is a system that consists of a communications satellite, multiple remote sites, and a hub that allows virtually uninterruptable communication between State, regional, and operational area level EOCs. The system, which uses technology similar to cellular telephones, has 60 channels. When a user picks up the line, the system automatically searches for the best available channel and is capable of conducting six simultaneous voice conversations and one data channel at a rate of 9600 baud. 3.10.9 EMERGENCY DIGITAL INFORMATION SYSTEM (EDIS) The Emergency Digital Information Service (EDIS) is a Statewide alerting system that allows authorized emergency managers to transmit detailed information to news media outlets to include streamed audio and pictures. The system integrates seamlessly into various communication systems throughout the State. EDIS is maintained by Cal OES and provides this service without charge to local, State and Federal agencies serving in California. WN