Most SCADA MAS radio networks are configured in a star configuration. The master radio(s) connect to a host computer that polls multiple RTUs (Remote Terminal Units). An omni-directional antenna is most often employed. Many different protocols are used under both IP and serial RS-232 data formats to perform the polling process.
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All Alligator Communications radios are protocol transparent. The data stream must simply comply with Ethernet IP or RS-232 asynchronous requirements. The Alligator radios are designed to flexibly handle both solicited and unsolicited data transmissions from remote terminal locations. Special packet queing is used to facilitate high QOS (Quality of Service) for high priority messages.
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To prevent network flooding, Alligator Communications radios employ optional packet filtering at both the MAC and IP address levels. This filters out packets that are not intended to be carried over the radio network.
For network security, the AES-256 encryption option is selected. This encryption is highly secure. The key generation is performed using the SHA-256 secure hash algorithm.
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Remote control and monitoring of all radios uses the Telnet IP protocol. Security is established by using AES-256 encryption. The Telnet IP port can be user defined for additional security.
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Repeater operation can be employed using back to back model 2888E radios. This extends the radio network distance or for RF shadowed areas. The repeater permits concurrent use of IP and RS-232 data formats.