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17	17	rejoin feature is that if the ACK packet sent by the platform to the node is not received within the set time range, the offline detection will be started.
18	18
19		-== 2.1offline rejoining （LWS007) ==
	19	+== offline rejoining （LWS007) ==
20	20
21	21
22	22	(% style="color:blue" %)**AT Command: AT+DDETECT**
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65	65
66	66	* **Example 1:** Downlink Payload: 320105A00B40  ~/~/ Set AT+DDETECT=1,1440,2880
67	67
68		-*
	68	+*
69	69	** 0x01** : Flag**
70	70
71	71	**0x05A0 **: ACK_Timout_1 : 1440minutes (24 hours)
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74	74
75	75	* **Explain**: Enable Online Detect, if end node doesn't receive any downlink within ACK_Timout_1( 1440 minutes or 24 hours). End node will use confirmed uplink to send packets during ACK_Timout_1 (the 24th hour) to ACK_Timout_2 ( the 48th hour). If from the 24th to 48th hour, end node got an downlink from server, it will switch back to unconfirmed uplink. end node will restart ACK_Timout_1. If from the 24th to 48th hour, end node still not got any downlink, means device doesn't get ACK from server within last 48 hours. Device will process rejoin, rejoin request interval is AT+RJTDC period. For AU915/ US915, device will use the sub-band used for last join.
76	76
77		-== 2.2 Change Uplink Interval ==
78		-
79		-Feature: Change LoRaWAN End Node Transmit Interval.
80		-
81		-
82		-(% style="color:blue" %)**AT Command: AT+TDC**
83		-
84		-(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:727.222px" %)
85		-|(% style="background-color:#4f81bd; color:white; width:165px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:227px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:329px" %)**Response**
86		-|(% style="width:165px" %)AT+TDC=?|(% style="width:227px" %)Show current transmit Interval|(% style="width:329px" %)30000(((
87		-OK
88		-
89		-the interval is 30000ms = 30s
90		-)))
91		-|(% style="width:165px" %)AT+TDC=60000|(% style="width:227px" %)Set Transmit Interval|(% style="width:329px" %)OK(((
92		-Set transmit interval to 60000ms = 60 seconds
93		-)))
94		-
95		-(((
96		-(% style="color:blue" %)**Downlink Command: 0x01**
97		-
98		-Format: Command Code (0x01) followed by 3 bytes time value.
99		-)))
100		-
101		-(((
102		-If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
103		-)))
104		-
105		-* **Example 1**: Downlink Payload:** 0100001E**  ~/~/ Set Transmit Interval (TDC) = 30 seconds
106		-
107		-* **Example 2**: Downlink Payload:** 0100003C**  ~/~/ Set Transmit Interval (TDC) = 60 seconds
108		-
109	109	(% style="display:none" %) (%%)
110	110
111		-
112	112	= 3. Examples and Explanations =
113	113
114	114	(% style="color:blue" %)**Switching platforms by rejoin function: Use device LHT65N to switch from TTN to ChirpStack as an example.**
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116	116	The following example shows the parameters of the LHT65N. Users need to check the Wiki instructions to confirm the parameters of the equipment they have purchased.
117	117	([[User Manual for LoRaWAN End Nodes)>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes]])
118	118
119		-
120	120	== 3.1 Configure appropriate operation times ==
121	121
122		-(% style="color:blue" %)**Firstly, the user sent downlink commands through the original registration platform (TTN) to modify the required TDC time and offline detection time.**(%%)
123	123
124		-(% style="color:red" %)**Note: Users need to set the TDC time shorter than the offline detection ACK_Timeout_1, the best offline detection time is more than twice the TDC time.**
	89	+Firstly, the user sent downlink commands through the original registration platform (TTN) to modify the required TDC time and offline detection time.
125	125
126		-Configuration via TTN downlink：
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129	129