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LoRaWAN Regional Parameters ©2016 LoRa™ Alliance Page 18 of 45 The authors reserve the right to change specifications without notice. 2.3.3 CN779-787 Data Rate and End-device Output Power encoding 1 There is no dwell time limitation for the CN779-787 PHY layer. The TxParamSetupReq 2 MAC command does not have to be implemented by CN779-787 devices. 3 The following encoding is used for Data Rate (DR) and End-device Output Power (TXPower) 4 in the CN780 band: 5 DataRate Configuration Indicative physical bit rate [bit/s] TXPower Configuration 0 LoRa: SF12 / 125 kHz 250 0 10 dBm 1 LoRa: SF11 / 125 kHz 440 1 7 dBm 2 LoRa: SF10 / 125 kHz 980 2 4 dBm 3 LoRa: SF9 / 125 kHz 1760 3 1 dBm 4 LoRa: SF8 / 125 kHz 3125 4 -2 dBm 5 LoRa: SF7 / 125 kHz 5470 5 -5 dBm 6 LoRa: SF7 / 250 kHz 11000 6..15 RFU 7 FSK: 50 kbps 50000 8..15 RFU Table 17: Data rate and TX power table 6 2.3.4 CN779-787 JoinAccept CFList 7 The CN780 ISM band LoRaWAN implements an optional channel frequency list (CFlist) of 8 16 octets in the JoinAccept message. 9 In this case the CFList is a list of five channel frequencies for the channels four to eight 10 whereby each frequency is encoded as a 24 bits unsigned integer (three octets). All these 11 channels are usable for DR0 to DR5 125kHz LoRa modulation. The list of frequencies is 12 followed by a single RFU octet for a total of 16 octets. 13 14 Size (bytes) 3 3 3 3 3 1 CFList Freq Ch4 Freq Ch5 Freq Ch6 Freq Ch7 Freq Ch8 RFU The actual channel frequency in Hz is 100 x frequency whereby values representing 15 frequencies below 100 MHz are reserved for future use. This allows setting the frequency of 16 a channel anywhere between 100 MHz to 1.67 GHz in 100 Hz steps. Unused channels have 17 a frequency value of 0. The CFList is optional and its presence can be detected by the 18 length of the join-accept message. If present, the CFList replaces all the previous channels 19 stored in the end-device apart from the three default channels as defined in Chapter 6. 20 The newly defined channels are immediately enabled and usable by the end-device for 21 communication. 22