Issue link: https://read.uberflip.com/i/1428395
LoRaWAN ® L2 1.0.4 Specification © 2020 LoRa Alliance ® Page 37 of 90 The authors reserve the right to change specifications without notice. The newly defined or modified channel is enabled and can be used immediately for 1159 communication. The RX1 downlink frequency is set equal to the uplink frequency. 1160 The end-device SHALL acknowledge the receipt of a NewChannelReq by returning a 1161 NewChannelAns command. The payload of this frame contains the following information: 1162 1163 Size (octets) 1 NewChannelAns payload Status Table 36: NewChannelAns payload format 1164 1165 1166 The status (Status) bits have the following meaning: 1167 1168 Bits 7:2 1 0 Status RFU Data-rate range ok Channel frequency ok Table 37: Status field format 1169 1170 1171 Bit=0 Bit=1 Data-rate range ok The designated data-rate range exceeds the ones currently defined for this end- device The data-rate range is compatible with the capabilities of the end- device Channel frequency ok The end-device cannot use this frequency The end-device is able to use this frequency. Table 38: NewChannelAns Status bits signification 1172 1173 If either of those bits equals 0, the command did not succeed, and the end-device SHALL 1174 keep its previous state. 1175 1176 The DlChannelReq command allows the Network to associate a different downlink frequency 1177 with the RX1 slot. This command is applicable for all regions supporting the NewChannelReq 1178 command (e.g., EU863-870 and CN779-787, but not US902-928 or AU915-928). In regions 1179 where that command is not defined, the end-device SHALL silently drop it. 1180 1181 1182 The command sets the center frequency for the downlink RX1 slot as follows: 1183 1184 Size (octets) 1 3 DlChannelReq payload ChIndex Frequency Table 39: DIChannelReq payload format 1185 1186 1187 The channel index (ChIndex) is the index of the channel whose downlink frequency is 1188 modified. 1189 The frequency (Frequency) field is a 24-bit unsigned integer. The actual downlink frequency 1190 (in Hz) is 100 × Frequency, where values representing frequencies below 100 MHz are 1191