Sodaq Sara R410M - NBiot connection problem (AT commands, nbIOT_test_udp)

1

Hello!

I’ve got my new Sodaq Sara, but unfortunately I coulnd’t connect to the NBiot network yet.

I followed the instructions here https://support.sodaq.com/sodaq-one/sodaq-sara-r410m/ , uploaded the Passtrough code with Arduino IDE successfully, and gave the AT commands but I get the following result:

AT+URAT=8
OK

AT+URAT?
+URAT: 8
OK

AT+CMEE=2
OK

AT+CGDCONT=1,“IP”,“u.iot.mt.gr.hu”
OK

AT+CGDCONT?
+CGDCONT: 1,“IP”,“u.iot.mt.gr.hu”,“10.36.66.144”,0,0,0,0
OK

AT+CFUN=1
OK

AT+CFUN?
+CFUN: 1
OK

AT+COPS?
+COPS: 1,0,“216 30 Telekom HU”,9
OK

AT+COPS=1,2,“21630”
OK

AT+COPS?
+COPS: 1,2,“21630”,9
OK

AT+CSQ
+CSQ: 31,99
OK

AT+CREG=2
OK

AT+CREG?
+CREG: 2,3
OK

AT+CGPADDR
+CGPADDR: 1,10.36.66.144
OK

AT+USOCR=17
+USOCR: 0
OK

AT+USOST=0,“37.97.216.22”,3000,4,“Data”
+USOST: 0,4
OK

AT+USOCL=0
OK

The problem is,

AT+CREG?
+CREG: 2,3 means that “registration denied”??
What’s wrong? The same SIM card works with the Sodaq NB-IoT Shield (N211 module), with same NB-IoT network perfectly.

But it seems like AT+USOST command sent the message succesfully out? How can it be?

By the way, I tried the nbIOT_test.ino and the nbIOT_test_udp.ino sketches too, they say “Failed to connect to the modem!”. So I’m stuck…

Please help!

2

Have you already tried AT+CREG=1?

3

Not yet! Thanks for the suggestion I’ll try it :slight_smile:

4

I tried, unfortunately it didn’t help. Everyhing is the same…

5

Seems like the problem is solved:
I just had to use

AT+CEREG=2

instead of

AT+CREG=2

6

@Zsofia_Papp

Thanks for letting us know.
I updated the example sequence on the support pages!

Best regards,
Jan