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LoRaWAN 1.0.2 Regional Parameters ©2017 LoRa Alliance™ Page 26 of 55 The authors reserve the right to change specifications without notice. The newly defined channels are immediately enabled and usable by the end-device for 700 communication. 701 2.4.5 EU433 LinkAdrReq command 702 The EU433 LoRaWAN only supports a maximum of 16 channels. When ChMaskCntl field is 703 0 the ChMask field individually enables/disables each of the 16 channels. 704 705 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 29: ChMaskCntl value table 706 If the ChMask field value is one of the values meaning RFU, then end-device should reject 707 the command and unset the "Channel mask ACK" bit in its response. 708 2.4.6 EU433 Maximum payload size 709 The maximum MACPayload size length (M) is given by the following table. It is derived from 710 limitation of the PHY layer depending on the effective modulation rate used taking into 711 account a possible repeater encapsulation layer. The maximum application payload length in 712 the absence of the optional FOpt control field (N) is also given for information only. The 713 value of N might be smaller if the FOpt field is not empty: 714 715 DataRate M N 0 59 51 1 59 51 2 59 51 3 123 115 4 230 222 5 230 222 6 230 222 7 230 222 8:15 Not defined Table 30: EU433 maximum payload size 716 717 If the end-device will never operate with a repeater then the maximum application payload 718 length in the absence of the optional FOpt control field should be: 719 720 DataRate M N 0 59 51 1 59 51 2 59 51 3 123 115 4 250 242 5 250 242 6 250 242

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