Unable to send UDP packets via NTN connectivity

Hello,

I am evalating the nRF9151-SMA-DK with a Monogoto SIM card that uses Skylo NTN connectivity.

I am able to reach the internet, since DNS resolution works:

Ready
> AT%XSYSTEMMODE=0,0,0,0,1

OK
> AT%XBANDLOCK=2,,"23,255,256"

OK
> AT%LOCATION=2,"45.40946744518183","11.910658449997351","0",0,0

OK
> AT+CGDCONT=0,"IP","go.mono"

OK
> AT+CEREG=5

OK
> AT+CNEC=24

OK
> AT+CSCON=3

OK
> AT%MDMEV=2

OK
> AT+CFUN=1

OK

%MDMEV: SEARCH STATUS 1

+CEREG: 2,"3AA3","00110383",14

%MDMEV: PRACH CE-LEVEL 0

+CSCON: 1,7,4

+CEREG: 5,"3AA3","00110383",14,,,"11100000","00111000"

%MDMEV: SEARCH STATUS 2

+CSCON: 0,7,4
> AT#XGETADDRINFO="google.com"

#XGETADDRINFO: "142.251.14.138"

OK

%MDMEV: PRACH CE-LEVEL 0

+CSCON: 1,7,4

Then I have set an UDP server, public on the internet, at address <server_ip>

I tested the reachaiblity of the server from public network with my pc as a client using a python script to send UDP packets.

However, when sending UDP packets with the nRF9151, nothing gets to the server.

> AT#XSOCKET=1,2,0

#XSOCKET: 0,2,17

OK

> AT#XSENDTO=0,0,0,"<server_ip>",9999,"test"

#XSENDTO: 0,0,4

OK

The provider confirms the SIM card is configured correctly, however I am unable to continue testing.

Can you help me?

Related