Murata ALT1250 Satellite NTN Network
The guide provided below contains AT command instructions for the Murata ALT1250 module designed to work with Skylo Satellite IoT for Non-Terrestrial Networks (NTN).
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The guide provided below contains AT command instructions for the Murata ALT1250 module designed to work with Skylo Satellite IoT for Non-Terrestrial Networks (NTN).
Last updated
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The Type 1SC module is the world’s smallest Cat. M1/NB-IoT module with global certification. It supports GPS/GNSS, OpenMCU, and Integrated SIMS.
Connect the UBC Cable to the EVK kit.
Connect the LTE antenna
Insert the Monogoto SIM
Use the USB to connect your computer to the AT CMD port of the EVK Kit
Connect to the EVK kit using a terminal program. You can use PuTTY for Windows, or Screen, minicom, or Miniterm for Mac or Linux.
Set the baud rate to 115200 Enter AT, if the connection with the LBAD0XX1SC-DM modem has been established, the board will answer with OK.
Check the status of the SIM card. The correct response should be: +CPIN: READY
+CPIN: READY means that the SIM is ready for use and does not require any PIN entry.
Execute various commands based on the software version you are using. Make sure to execute the commands that correspond to your version.
Query device information
Request the product type, hardware, and firmware version:
Example response:
Revision: RK_03_02_00_00_41841_001
Request the IMSI (International Mobile Subscriber Identity):
Request the ICCID (Integrated Circuit Card ID), which is the identification number of the iSIM
Set the error reporting to verbose, resulting in more descriptive error messages (optional):
Check the SIM initialization selection policy is currently using:
Expected response:
SIM_INIT_SELECT_POLICY:5. The last digit indicates the Active SIM:
0 indicates External (SIM card)
5 indicates Internal (iSIM)
Enable the External SIM card
Disable radio
Set the APN to data.mono:
Lock the modem to a specific region/band
Lock the modem to a GNSS mode to Internal GNSS Mode
Reset in order for the parameters to take effect
Disable radio
Enable GNSS and NTN reception notification:
Report notification about Timing Advance calculation:
Send registration status
Enable iGNSS
it is crucial to wait until a valid GPS location is acquired before continuing operations. This ensures that the device is properly connected to the satellite network and can function accurately within its coverage. example response
%IGNSSEVU: // Wait to FIX URC is received ←"FIX",1,"09:25:24","11/09/2024","xxxxx","-yyyyyy","113.6",1726046724000,4.6,"0.000000","B",7
Enable radio
Example response:
The table below provides an overview of the possible values for CEREG state change reports, indicating the module's network registration status.
0
Not registered, and the module is not searching for a network.
1
Registered to the home network.
2
Not registered, but the module is attempting to attach or searching for a network.
3
Registration denied by the network.
4
Unknown (for example, out of coverage)
5
Registered and roaming.
request a specific network measurement, such as signal strength, noise levels, or other metrics:
Example response: %MEAS:Signal Quality:RSRP= -115,RSRQ= -15,SINR= -3,RSSI= -120.
request physical connectivity
A UDP payload test when the modem has an active data connection with a Satellite.
Send UDP Payload to the IP address 34.192.142.126:
Example response::
Set and Active UDP Socket
Example response::
Send UDP Socket
Example response::
info UDP Socket
Example response::
Close UDP Socket
Example response::
A PING test can be performed to test if the modem has an active data connection with a satellite network.
Send PING to the IP address 8.8.8.8:
Example response:
When transitioning between satellite and public networks using the Murata Kit use the following commands:
This command activates the CAT-M mode for public networks, allowing the device to switch from satellite connectivity to a cellular public network.
This command activates the NBNTN mode, returning the device to satellite network connectivity.
Keep the AT Commands manual next to you for more details about the commands. to download the latest version, and scroll down to Documentation and Resources to find the AT Commands Manual.
Great work on connecting the Murata LBAD0XX1SC-DM to Monogoto! Have a look at the Things logs in the to find more details about the established connection.
