The SX1115 is compatible with Cisco's WT2700 Wireless Technology Suite for operation in the 5.8 GHz U-NII (Unlicensed National Information Infrastructure) band. The RF Head (referred to as an outdoor unit or ODU) interfaces between the uBR7246/7223 router and antenna. The Tx and Rx signals sent between the router and ODU operate at IF frequencies that are combined onto a single IF cable using frequency division duplexing (FDD) along with the 24 MHz reference signal and DC bias. The ODU then provides the conversions necessary to operate in the U-NII band.