Changes for page Debug NB-IoT Connection

Summary

• Page properties (1 modified, 0 added, 0 removed)

Details

Page properties

Content

...	...	@@ -1,38 +1,103 @@
	1	+(% class="wikigeneratedid" %)
	2	+**Table of Contents:**
	3	+
	4	+{{toc/}}
	5	+
	6	+
	7	+
	8	+
	9	+
1	1	= **For BC95-G** =
2	2
	12	+----
3	3
4		-(% style="color:blue" %)**1. Check the reason why you can't access the network:**
5	5
6		-1) AT+CEREG=5
	15	+== (% style="color:blue" %)**1. Check the reason why you can't access the network**(%%) ==
7	7
8		-2) AT+CEREG?  ~/~/This process may be longer, please repeat the input
	17	+(% style="color:#037691" %)**1) AT+CEREG=5**
9	9
10		-3) Mainly check the two parameters cause_type and reject_case
	19	+(% style="color:#037691" %)**2) AT+CEREG?**  (%%) ~/~/  This process may be longer, please repeat the input
11	11
	21	+(% style="color:#037691" %)**3) Mainly check the two parameters **(% style="color:red" %)**cause_type and reject_case**
12	12
	23	+
13	13	[[image:image-20220530093747-3.png]]
14	14
15	15
	27	+== (% style="color:blue" %)**2. Network access operation:**(%%) ==
16	16
17		-(% style="color:blue" %)**2. Network access operation:**
	29	+(% style="color:#037691" %)**1) AT+CFUN=0**
18	18
19		-1) AT+CFUN=0
	31	+(% style="color:#037691" %)**2) AT+NBAND=X**  (%%) ~/~/  X means the local frequency band number
20	20
21		-2) AT+NBAND=X  ~/~/X means the local frequency band number
	33	+(% style="color:#037691" %)**3) AT+NRB**
22	22
23		-3) AT+NRB
	35	+(% style="color:#037691" %)**4) After waiting for a period of time, you can use **(% style="color:red" %)**AT+CSQ **(%%)**to query the network access**
24	24
25		-4) After waiting for a period of time, you can use AT+CSQ to query the network access
26	26
27		-
28	28	[[image:image-20220530093821-4.png]]
29	29
30	30
31		-
32	32	(% style="color:blue" %)**Remarks:**
33	33
34		-~1. The operating voltage of the SIM card used must be less than 3.0V
	43	+~1. The operating voltage of the SIM card used must be less than 3.0V.
35	35
36		-2. The network access time varies with the signal strength
	45	+2. The network access time varies with the signal strength.
37	37
38		-3. If you have not been able to access the network, please try to access the network manually
	47	+3. If you have not been able to access the network, please try to access the network manually.
	48	+
	49	+
	50	+== (% style="color:blue" %)**3. Check the PS Attach or Detach  **(%%) ==
	51	+
	52	+(% style="color:#037691" %)**1) AT+CGATT?**
	53	+
	54	+(% style="color:#037691" %)**Response
	55	++CGATT: <state>
	56	+OK**
	57	+
	58	+(% style="color:#037691" %)**Write Command
	59	+AT+CGATT=<state>**
	60	+
	61	+(% style="color:#037691" %)**<state> Integer type. Indicates the state of PS attachment.
	62	+0 Detached
	63	+1 Attached**(%%)
	64	+
	65	+
	66	+**Note:Generally, when registering with an operator, attaching GPRS is automatic, and CGATT can manually attach the network.**
	67	+
	68	+
	69	+== (% style="color:blue" %)**4. Check the signaling connection status:**(%%) ==
	70	+
	71	+(% style="color:#037691" %)**1) AT+CSCON?**
	72	+
	73	+(% style="color:#037691" %)**Response
	74	++CSCON: <n>,<mode>
	75	+OK**
	76	+
	77	+(% style="color:#037691" %)**<n> Enable/disable the URC.
	78	+0 Disable the URC
	79	+1 Enable URC +CSCON: <mode>
	80	+<mode>Signaling connection status.
	81	+0 Idle
	82	+1 Connected**
	83	+
	84	+
	85	+== (% style="color:blue" %)**5. Check the PDP Context Activate/Deactivate**(%%) ==
	86	+
	87	+(% style="color:#037691" %)**1) AT+CGACT?**
	88	+
	89	+(% style="color:#037691" %)**Response
	90	+[+CGACT: <cid>,<state>]**
	91	+
	92	+(% style="color:#037691" %)**[+CGACT: <cid>,<state>]
	93	+[…]
	94	+OK**
	95	+
	96	+(% style="color:#037691" %)**<state> Integer type. The state of PDP context activation.
	97	+0 Deactivated
	98	+1 Activated
	99	+<cid> Integer type. A numeric parameter which specifies a particular PDP context definition (see
	100	+AT+CGDCONT).**(%%)
	101	+
	102	+
	103	+(% style="color:red" %)**Note: Note that having a cell ID attached to the network does not necessarily mean successful activation. For data exchange, such as initiating HTTP requests, activation is necessary to use them.**