SARA board CSQ 99,99

Hi

I can’t get a connection using my SARA board.

I as previously on the early access network and now this is on the newer network, using sim cards from the “starters pack”

The firmware seems ok, but I get no signal quality

OK
06.57,A07.03
OK
+CSQ: 99,99

This is my config
+NCONFIG: “AUTOCONNECT”,“TRUE”
+NCONFIG: “CR_0354_0338_SCRAMBLING”,“TRUE”
+NCONFIG: “CR_0859_SI_AVOID”,“TRUE”
+NCONFIG: “COMBINE_ATTACH”,“FALSE”
+NCONFIG: “CELL_RESELECTION”,“FALSE”
+NCONFIG: “ENABLE_BIP”,“FALSE”
+NCONFIG: “NAS_SIM_POWER_SAVING_ENABLE”,“TRUE”

Hi @jonathanrcarter

Your NCONFIG settings look good.
If you have multiple sim you can try another sim.
The simcards are not bound to an imei.

It should take up to maximum of 1 minute to get a proper CSQ to connect.

Best regards,
Jan

yes , I thought so,

I have tried again today from another location but also with no success

is there any way I can be in a blind spot for coverage or do you think t-mobile should have good service everywhere?

BINGO, after 27 mins… I got a connection

Initializing and connecting… Failed to connect!
Failed to connect!
Connected succesfully!
Sending message: “Hello World!”… Could not queue message!
Pending Messages: 0 | Failed Messages: 0
Sending message: “Hello World!”… Could not queue message!
Pending Messages: 0 | Failed Messages: 0
Sending message: “Hello World!”… Could not queue message!

@jonathanrcarter

The T-Mobile NB-IoT network should have really good coverage.
I see that after 27min you are connected but still cannot send a message.

If you have an other gsm/lte/nbiot antenna can you try to connect with a different antenna?
If with this other antenna you still have trouble to connect, we should swap your board for a new one.

Best regards,
Jan

thanks,

I get a 22,99 in about 1 min now

I still can’t send any messages , I switched to using the nbIOT_test_udp script now I assume the UDP is what I should be using , of should I be using COAP?

I actually tried the PING and get

+CME ERROR: 30

I’ll have to look that up somewhere

Hi @jonathanrcarter,

You can use both UDP and COAP with an N211 module.
It depends on the network settings if it will accept COAP and/or UDP.

This should be configured into your account / postman. Did you create a norrth application and add your nbiot device to this with the postman instruction you gor from T-Mobile?

After getting a correct CSQ, you should wait till you are connected to the network.
Repeat AT+CGATT? till you get a 1 as a return value.

Most important AT commands can be found here:
http://support.sodaq.com/sodaq-one/at/

Best reagrds,
Jan

Hi @jonathanrcarter, did it last to get connection for arround 27 mins more times ? Or for the following tries it was connecting propperly ?