BG96 NB-IoT mode private network not working band3

IoT Modules LPWA Module
1

hi
we have private Nokia network, Band 3 spectrum with 20 MHz dedicated assignment for NB-IoT inband signaling.
PLMN is 99920
I am not able to register the SIM card using Quectel BG96.
I have tried the AT commands, as per user guide and followed up few references from the forum,
I will be grateful to have further help from the pro Quectel forum member,

It looks like I am very close,
I am attaching the putty log for the AT commands I have tried,
+QCFG: “nwscanseq”,030201
OK

APP RDY

at

OK

at+cops?

+COPS: 0

OK

at+cgdcont?

+CGDCONT: 1,“IP”,“nbiot”,“0.0.0.0”,0,0,0,0

OK

at+cgatt?

+CGATT: 0

OK

at+creg?

+CREG: 0,0

OK

at+creg=1

OK

at+cfun=1

OK

at+csq

+CSQ: 99,99

OK

APP RDY

at

OK

at+csq

+CSQ: 99,99

OK

at+cpin?

+CPIN: READY

OK

at+qcfg=@

ERROR

at+qcfg=“nwscanseq”

+QCFG: “nwscanseq”,030201

OK

at+qcfg="s

ERROR

at+qcfg=“nwscanseq”,030201

OK

at+qcfg=“nwscanseq”

+QCFG: “nwscanseq”,030201

OK

at+qcfg=“nwscanseq”

+QCFG: “nwscanseq”,030201

OK

at+qcfg=“iotopmode”

+QCFG: “iotopmode”,1

OK

at+qcfg="a

ERROR

at+qcfg=“band”

+QCFG: “band”,0xf,0x3,0x10

OK

at+qcfg=“band”,0xf,0x4,0x4,1

ERROR

at+qcfg=“band”,0xf,0x4,0x4

ERROR

AT+QCFG=“band”,0x0,0x0,0x0

ERROR

at&w

OK

at+qcfg=“band”,0,4,4

OK

at+qcfg=“band”

+QCFG: “band”,0xf,0x4,0x4

OK

at+cops?

+COPS: 0

OK

at+cops=?

+COPS: (1,“999 20”,“999 20”,“99920”,9),(0,1,2,3,4),(0,1,2)

OK

at+qcsq

+QCSQ: “NOSERVICE”

OK

at+qcsq=?

+QCSQ: “NOSERVICE”,“GSM”,“CAT-M1”,“CAT-NB1”

OK

at+qcsq:"CAT-NB-

ERROR

at+qcsq:“CAT-NB1”,-52,-81,195,-10

ERROR

at+qcsq=“CAT-NB1”,-52,-81,195,-10

ERROR

at+csq

+CSQ: 99,99

OK

at+qspn

ERROR

at+qspn=?

OK

at+qspn?

ERROR

at+qspn

ERROR

at+qs

ERROR

at+qcsq=?

+QCSQ: “NOSERVICE”,“GSM”,“CAT-M1”,“CAT-NB1”

OK

at+qcsq=“CAT-NB1”,-52,-81,195,-10

ERROR

at+gsn

860536049415567

OK

2

based on your at log ， pls lock band 3 with the below at cmd

AT+QCFG=“BAND”,0,4,4 // Lock to B3（catm & nb）

to check mor info ，pls send the below at cmd

at+cereg?;+cgreg?;+cops?;+qcsq;+qnwinfo

AT+QMBNCFG=“DEACTIVATE”

AT+QMBNCFG=“autosel”,0

reboot module, then try these command again：

AT+CGDCONT?

AT+CGCONTRDP

AT+COPS?

AT+CIMI

AT+QCSQ

AT+QMBNCFG="LIST‘

AT+QCFG=“emmcause”

for more analysis ， we need your help and collect QXDM log 。

3

further more i tried below, but still device is not scanning the NB iot

at+qcfg=“nwscanseq”,03
at+qcfg=“nwscanmode”,3
at+qcfg=“iotopmode”,1
at+cfun=0
at+cfun=1
at+cops=1,2,“99920”,9
at+qcfg=“band”,0,4,4
at+qcsq=“CAT-NB1”,-52,-81,195,-10
at+cgdcont=1,“IP”,“nbiot”

4

hi Stephen
thank you for your time
I am trying your suggestions now,
could you please suggest how to reboot the module without unplug it from the usb.
I have the USB pluggable dongle which I am accessing remotely.
Thank you
Abhishek

5

hi Stephen
Below is the print for the AT commands,
Please ignore the text, it is printing twice due to some reason with putty terminal

OK
aatt++cceerreegg??
+CEREG: 0,2

OK
aatt++ccooppss??
+COPS: 0

OK
aatt++qqccssqq
+QCSQ: “NOSERVICE”

OK
aatt++qqnnwwiinnffoo
+QNWINFO: No Service

OK
aatt++qqmmbbnnccffgg=="“ddeeaaccttiivvee”"
ERROR
aatt++qqmmbbnnccffgg=="“DDEEAACCTTIIVVAATTEE”"
OK
aatt++QQMMBBNNCCFFGG=="“aauuttoosseell”",00
OK

6

hi Stephen
please find further logs post reboot

OK
aatt++ccggddccoonntt??
+CGDCONT: 1,“IP”,“nbiot”,“0.0.0.0”,0,0,0,0

OK
aatt++ccggccoonnttrrddpp
OK
aatt++ccooppss??
+COPS: 0

OK
aatt++cciimmii
999200000000000

OK
aatt++qqccssqq
+QCSQ: “NOSERVICE”

OK
aatt++qqmmbbnnccffgg=="“LLIISSTT”"
+QMBNCFG: “List”,0,0,0,“Att_Non_Volte_Lab”,0x05010310,201712191
+QMBNCFG: “List”,1,0,0,“China_Common”,0x05802800,201806231
+QMBNCFG: “List”,2,0,0,“ROW_Commercial”,0x05800801,201806301
+QMBNCFG: “List”,3,0,0,“Verizon_Commercial”,0x05803801,201806301
+QMBNCFG: “List”,4,0,0,“Telstra_Commercial”,0x05801806,201903191
+QMBNCFG: “List”,5,0,0,“SKT_Commercial”,0x05804803,201907061

OK
aatt++qqccffgg=="“eemmmmccaauussee”"
OK

please advise how to enable or collect QXDM logs
thank you