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45	45	|(% style="width:117px" %)China Mobile|(% style="width:151px" %)No need configure|(% style="width:474px" %)China Mainland, HongKong|(% style="width:135px" %)
46	46	|(% style="width:117px" %)China Telecom|(% style="width:151px" %)ctnb|(% style="width:474px" %)China Mainland|(% style="width:135px" %)
47	47
48		-(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:878px" %)
49		-|(% style="background-color:#4f81bd; color:white; width:117px" %)**SIM Provider**|(% style="background-color:#4f81bd; color:white; width:151px" %)**AT+QCGDEFCONT=**|(% style="background-color:#4f81bd; color:white; width:474px" %)**Command Explanation**|(% style="background-color:#4f81bd; color:white; width:135px" %)**Comments**
50		-|(% style="width:117px" %)**[[1NCE>>https://1nce.com]]/[[NB card purchased by the customer>>https://1nce.com]]**|(% style="width:151px" %)iot.1nce.net/xxx|(% style="width:474px" %)This command sets the PSD connection settings for PDN connection on power-up. When the MT attaches to the NB-IoT network on power-on, a PDN connection setup is performed. Therefore, PDN connection settings are stored in NVRAM so that they can be used by the modem during the attachment.|(% style="width:135px" %)
51		-
52	52	== 2.2 Speed Up Network Attach time ==
53	53
54	54
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616	616
617	617	e.g.
618	618
619		-* AT+URL1=11, "i"
620		-* AT+URL2=11,"faaaa241f-af4a-b780-4468-c671bb574858"
	615	+* AT+URL1=11, "i";
	616	+* AT+URL2=11,"/faaaa241f-af4a-b780-4468-c671bb574858"
621	621
622	622	[[image:image-20240729172500-14.png||height="403" width="700"]]
623	623
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960	960	* (% style="color:#037691; font-weight:bold" %)**AT+FDR**(%%)**       **~/~/ Reset Parameters to Factory Default.
961	961	* (% style="color:#037691; font-weight:bold" %)**AT+FDR1**(%%)**     **~/~/ Reset parameters to factory default values except for passwords.(new)
962	962
	959	+
963	963	=== Version Confirmation ===
964	964
965	965	We are now dividing the **old firmware**(without FDR1 function) with the **new firmware**(with FDR1 function) by whether it contains FDR1 functionality. Please refer to the table:
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989	989	)))
990	990	|(% style="width:210px" %)RS485-NB|(% style="width:150px" %)Before V1.0.8|(% style="width:150px" %)After V1.0.8 (including V1.0.8)
991	991
	989	+
992	992	=== UART connection and firmware update methods ===
993	993
994	994
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1022	1022
1023	1023	**Procedure for querying the password(new firmware):**
1024	1024
1025		-Refer to [[the old and new firmware division>>http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#HVersionConfirmation]] above, and run the firmware first after updating the firmware.
	1023	+Refer to [[the old and new firmware division>>http://wiki.dragino.com/xwiki/bin/view/Why%20can%27t%20the%20password%20access%20AT%20command%20after%20upgrade%28-NB%29%3F/#H3.A0VersionConfirmation]] above, and run the firmware first after updating the firmware.
1026	1026
1027	1027	* After the firmware upgrade is complete, switch back to the **FLASH** and reset the node to **run the new firmware once**.
1028	1028	* Then place the switch at the **ISP** and connect to the STM32CubeProgrammer (same as when burning the firmware).

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