22 | About the Radio
Aprisa SRi User Manual 1.1.0
Product Features
Functions
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Point-to-Multipoint (PMP) operation
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Unlicensed frequency bands in the frequency range of 902-928 MHz as permitted by the local
regulator
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Channel size of 50 kHz
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Half duplex RF Point-To-Multipoint operation
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Jam resistant frequency hopping spread spectrum technology operating where other licence free
radios have difficulty in break through
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Full band and reduced non-overlapping zone options allow a tailored approach to interference
management for maximum range
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Ethernet data interface and RS-232 / RS-485 asynchronous
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Data encryption and authentication using 128,192 and 256 bit AES and CCM security standards
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Terminal server operation for transporting RS-232 / RS-485 traffic over IP or Ethernet and converting
IP packets to a local physical serial port
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Mirrored Bits ® and SLIP support for RS-232
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IEEE 802.1Q VLAN support with single and double VLAN tagged and add/remove VLAN manipulation
to adapt to the appropriate RTU / PLCs
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QoS supports using IEEE 802.1p VLAN priority bits to prioritize and handle the VLAN / traffic types
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QoS per port (Ethernet, serial, management)
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L2 / L3 / L4 filtering for security and avoiding narrow band radio network overload
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L3 Gateway Router mode with standard static IP route for simple routing network integration
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L3 Router mode with per Ethernet interface IP address and subnet
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L2 Bridge mode with VLAN aware for standard Industrial LAN integration
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Ethernet and serial payload compression to increase the narrow band radio capacity
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SuperVisor web management support for element and sub-network management
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SuperVisor Extended Network Management (EXM) extending SuperVisor management beyond the
single radio network providing configuration and monitoring to other Aprisa SR family products
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SNMPv1/2/3 & encryption MIB supports for 4RF SNMP manager or third party SNMP agent network
management
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SNMP context addressing for compressed SNMP access to remote radios
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SNTP for accurate wide radio network time and date
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Transparent to all common SCADA protocols; e.g. Modbus, IEC 60870-5-101/104, DNP3 or similar
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Complies with international standards, including FCC, EMC, safety and environmental standards