Telit ME310M1-W1N Satellite NTN Network

This guide provides the steps to connect the Telit ME310M1-W1N Development Kit to Skylo satellite Non-Terrestrial Networks (NTN) using a Monogoto SIM.

Quick Navigation

• Set up the ME310M1-W1N

• Connect the ME310M1-W1N to Skylo

• Test the connection by sending UDP payload

• Useful Links

Set up the ME310M1-W1N

• Connect the Power cable to the ME310M1-W1N

• Connect the USB cable to the ME310M1-W1N (EVB)

• Connect the LTE antenna

• Connect the GPS antenna

• Insert the Monogoto SIM

Run the latest module and application firmware

Update the ME310M1-W1N with the latest module firmware that supports NTN

How to download and update the ME310M1-W1N modem and application firmware

Update module firmware

1. Download the latest module firmware ME310M1-W1N NTN.

2. Download the Cinterion XFP tool TC-XFP-4.3.3.

3. Open Telit Cinterion XFP Programmer

4. Upload the .bin file (e.g. stream_ME310M1-W1N_MCU_48.00.503-B008-P0U.500000_signed.bin) and select Program.

For more information, see Telit's getting started page.

Open a serial connection with the ME310M1-W1N

You can use the Serial Terminal ComPort, or any program of choice (e.g. PuTTY for Windows, or screen/minicom/miniterm for macOS/Linux).

Set the baud rate to 115200 . To test the connection with the ME310M1-W1N module, enter AT and expect the answer OK.

Keep the AT Commands manual next to you for more details about the commands. Click here to download the latest version.

Check SIM Status

Enable the module

AT+CFUN=1

Check SIM status

AT+CPIN?

Expected response: +CPIN: READY

+CPIN: READY means that the SIM is ready and does not require any PIN entry.

Query Device Information

Useful for confirming firmware, hardware and SIM identity.

Request the hardware model

AT+GMM

Example response: ME310M1-W1N

Request the firmware version

AT+CGMR

Example response: M0U.500003-B008

The minimum required module firmware is M0U.500003-B008

Request the IMSI

AT+CIMI

Request the ICCID (Integrated Circuit Card ID), which is the identification number of the SIM

AT%XICCID

Acquire GPS location

To establish a satellite connection, a location has to be set.

Put the radio in flight mode

AT+CFUN=4

Activate GPS within the ME310M1-W1N module

AT$GPSP=1

Start the GNSS scan

AT$GPSACP

Example response:

$GPSACP: 134454.000,3144.5416N,03459.4203E,3.4,303.7,3,0.0,0.0,0.0,060926,06,7.4,7.0

Save the location as we need it later on.

Shut down the GPS

AT$GPSP=0

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Connect the ME310M1-W1N to Skylo

Disable radio

AT+CFUN=4

Enable NTN mode (NB-IoT over satellite)

AT%RATIMGSEL=4

Check whether the modem supports multiple NTN bands.

AT%GETCFG="BAND"

Band	Name	DL freq. (MHz)	UL freq. (MHz)
255	L-band (NTN 1.6 GHz)	1525–1559	1626.5–1660.5
256	S-band (NTN 2 GHz)	2170–2200	1980–2010
252	AWS-4	2180–2200	2000–2020
23	Skylo (same as Band 252)	2180–2200	2000–2020

Set GPS location

Configure static UE position mode:

AT%SETCFG="NTN_UE_POS_MODE","1"

Format:

AT%SETCFG="NTN_UE_STATIC_POS","<latitude>","<longitude>","<altitude>"

Set the location which has just been acquired, e.g.:

AT%SETCFG="NTN_UE_STATIC_POS","31.742360","34.990338","303.7"

Configure the NTN operator profile for Skylo

AT%NWOPER="default",,"skylo"

Subscribe to network status events

Enable SIB31 reception events

AT%NOTIFYEV="SIB31",1

Enable Timing Advance events

AT%NTNEV="TA",1

CEREG network registration status events

AT+CEREG=2

Enable the radio

AT+CFUN=1

Set APN

AT+CGDCONT=1,"IP","data.mono"

Automatic Network Selection

AT+COPS=0

The initial NTN registration may take several minutes. Example responses:

%NOTIFYEV: "SIB31"
%NTNEVU: "TA","RACH",501,21894,667760
%NTNEVU: "TA","TAC",1,140,667931
+CEREG: 5,"3A9D","0007DBBD",14

CEREG State Codes

Value	Meaning
0	Not registered, not searching
1	Registered (home network)
2	Not registered, searching
3	Registration denied
4	Unknown / out of coverage
5	Registered & roaming

Radio & Signal Checks

Request network info

AT#RFSTS

Example response:

#RFSTS: "901 98",32233,-121,-111,-10,3A9D,0,0,0,1,0,"7DBBD","240075909193025","Skylo Technologi",3,255,0,0,3

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Test the Connection by Sending UDP Payload

To send UDP data, send three AT commands:

1. Activate PDP context

AT#SGACT=1,1

Expected response: #SGACT: 10.116.194.83

1. Connect socket

Replace <ip-address> with the ip address of your UDP server

AT#SD=<connId>,<txProt>,<rPort>,"<IPaddr>",<closureType>,<lPort>,<connMode>

1. Set the IP address and port, e.g.:

AT#SD=1,1,1055,"18.199.15.247",0,5000,1

Expected response: OK

1. Send UDP data through socket 1

AT#SSEND=1

Example response: >

1. Enter the payload

> Hello from Telit NTN

1. Close the UDP socket

Ctrl+Z

Expected response: OK

You can test the UDP connection with the Ubidots platform which runs a UDP server. Learn more.

Test the Connection by Sending PING

To send PING, send three AT commands:

1. Activate PDP context

AT#SGACT=1,1

Expected response: #SGACT: 10.116.194.83

1. Send 2 PINGs to IP address 8.8.8.8.

AT#PING="8.8.8.8",5

If the connection is active, you will see 2 PINGs with a number representing the response time in milliseconds. Example response:

#PING: 01,8.8.8.8,4,114
#PING: 02,8.8.8.8,2,114

Great work on connecting the Telit ME310M1-W1N to Monogoto! Have a look at the Things logs in the Monogoto Hub to find more details about the established connection.

Switch Between NTN and Public Networks

Use the following commands to switch from NTN to public networks:

Disable radio

AT+CFUN=4

Enable public networks

AT%RATIMGSEL=1

Reset the module

AT+CFUN=1,1

Enable radio

AT+CFUN=1

Set APN

AT+CGDCONT=1,"IP","data.mono"

Automatic Network Selection

AT+COPS=0

Activate PDP context

AT#SGACT=1,1

Expected response: #SGACT: 10.116.194.83

Switch Back to Satellite NTN

Put the radio in flight mode

AT+CFUN=4

Enable NTN mode (NB-IoT over satellite)

AT%RATIMGSEL=4

Set GPS location

Configure static UE position mode:

AT%SETCFG="NTN_UE_POS_MODE","1"

Set the location which has just been acquired, e.g.:

AT%SETCFG="NTN_UE_STATIC_POS","31.742360","34.990338","303.7"

Configure the NTN operator profile for Skylo

AT%NWOPER="default",,"skylo"

Enable SIB31 reception events

AT%NOTIFYEV="SIB31",1

Enable Timing Advance events

AT%NTNEV="TA",1

CEREG network registration status events

AT+CEREG=2

Enable the radio

AT+CFUN=1

Set APN

AT+CGDCONT=1,"IP","data.mono"

Automatic Network Selection

AT+COPS=0

The initial NTN registration may take several minutes. Example responses:

%NOTIFYEV: "SIB31"
%NTNEVU: "TA","RACH",501,21894,667760
%NTNEVU: "TA","TAC",1,140,667931
+CEREG: 5,"3A9D","0007DBBD",14

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Useful Links

• Telit ME310M1-W1N NTN APP Note

• Telit ME310M1-W1N NTN Operating Guide

• Telit ME310M1-W1N NTN AT Commandsֿ

• Telit ME310M1-W1N NTN User Guide