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LoRaWAN Regional Parameters ©2016 LoRa™ Alliance Page 9 of 45 The authors reserve the right to change specifications without notice. In this case the CFList is a list of five channel frequencies for the channels four to eight 1 whereby each frequency is encoded as a 24 bits unsigned integer (three octets). All these 2 channels are usable for DR0 to DR5 125kHz LoRa modulation. The list of frequencies is 3 followed by a single RFU octet for a total of 16 octets. 4 5 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 6 frequencies below 100 MHz are reserved for future use. This allows setting the frequency of 7 a channel anywhere between 100 MHz to 1.67 GHz in 100 Hz steps. Unused channels have 8 a frequency value of 0. The CFList is optional and its presence can be detected by the 9 length of the join-accept message. If present, the CFList replaces all the previous channels 10 stored in the end-device apart from the three default channels as defined in Chapter Error! 11 Reference source not found.. The newly defined channels are immediately enabled and 12 usable by the end-device for communication. 13 2.1.5 EU863-870 LinkAdrReq command 14 The EU863-870 LoRaWAN only supports a maximum of 16 channels. When ChMaskCntl 15 field is 0 the ChMask field individually enables/disables each of the 16 channels. 16 17 ChMaskCntl ChMask applies to 0 Channels 1 to 16 1 RFU .. .. 4 RFU 5 RFU 6 All channels ON The device should enable all currently defined channels independently of the ChMask field value. 7 RFU Table 6: ChMaskCntl value table 18 If the ChMaskCntl field value is one of values meaning RFU, the end-device should reject 19 the command and unset the "Channel mask ACK" bit in its response. 20 2.1.6 EU863-870 Maximum payload size 21 The maximum MACPayload size length (M) is given by the following table. It is derived from 22 limitation of the PHY layer depending on the effective modulation rate used taking into 23 account a possible repeater encapsulation layer. The maximum application payload length in 24 the absence of the optional FOpt control field (N) is also given for information only. The 25 value of N might be smaller if the FOpt field is not empty: 26 27 DataRate M N 0 59 51 1 59 51 2 59 51 3 123 115 4 230 222 5 230 222

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