> For the complete documentation index, see [llms.txt](https://docs.monogoto.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.monogoto.io/getting-started/general-device-configurations/iot-devices/quectel-bg950s-gl.md). # Quectel BG950S-GL The Quectel BG950S-GL module supports LTE Cat M1 and Cat NB2 technologies with integrated GNSS, offering ultra-low power consumption. It complies with 3GPP Release 14 standards, making it ideal for power-sensitive and location-aware IoT applications. ### Prerequisites * Monogoto SIM * BG950S-GL ### Quick Navigation * [Set up EVB Kit ](#set-up-umts-and-lte-evb-kit) * [Useful Links](#useful-links) ## Set up EVB Kit ![Quectel BG950S-GL modem](/files/C2PHoBW1sIUX7jFy4b2O) #### Set up the EVB Kit * **Connect the LTE antenna** * Insert the **Monogoto SIM** #### **Connect your PC to the EVB Kit** Use the USB to UART converter cable to connect your computer to the **COM1 MAIN** port of the EVB Kit {% hint style="info" %} When using Windows, [install the driver](https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M0mPxGpottOEfcucXOR%2Fuploads%2FDiNf9oe2RoYtpFrVIA8L%2FUSBMSER.zip?alt=media\&token=18d8a2f5-8e8e-47d2-a553-ddc9fe7653cd) using the disk or USB stick provided by Quectel. {% endhint %} Connect to the EVB kit (WCH USB-Serial **Ch** **A**) using a **terminal program**. You can use PuTTY for Windows, or screen, minicom, or miniterm for Mac or Linux. Once the modem has started, it will report: ``` RDY APP RDY ``` Enter `AT`, if the connection with the BG950S-GL modem has been established, the board will answer with `OK`. ## Connect the BG950S-GL to Monogoto {% hint style="info" %} Keep the **AT Commands manual** next to you for more details about the commands. [**Click** ](https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M0mPxGpottOEfcucXOR%2Fuploads%2FmlGFvvryFqAlm4FB39qt%2FQuectel_BG95BG77BG600L_Series_QCFG_AT_Commands_Manual_V2.0.pdf?alt=media\&token=15dabb47-b5b0-4cfa-ad4a-11cecc9f9211)**here** to download the latest version. {% endhint %} #### **Reset the modem** to its default configuration: Restore factory settings: ``` AT&F1 ``` **Set the error reporting to** **verbose**, resulting in more descriptive error messages (optional): ```bash AT+CEREG=2 ``` Check the **status of the SIM card**. The correct response should be: `+CPIN: READY` ``` AT+CPIN? ``` {% hint style="warning" %} If you receive an error, the SIM may not be inserted properly or the SIM is protected with a PIN. By default, Monogoto SIMs are not PIN protected. {% endhint %} ### Query device information Request the **product type, hardware,** and **firmware** **version**: 
AT+QGMR
Example response: BG950SGLAAR02A01\_01.001.01.001 Request the **IMSI** (International Mobile Subscriber Identity): ``` AT+CIMI ``` Request the **ICCID** (Integrated Circuit Card ID), which is the identification number of the SIM card ```bash AT%CCID ``` ### Network Configuration It is possible to let the modem select the network automatically, or to manually define a network to connect with. #### **Option 1: Automatic Network Selection** To set the modem to **automatic network selection,** enter the command: ```bash AT+COPS=0 ``` Check the **network and cellular technology the modem** is currently using: ``` AT+COPS? ``` Expected response: `+COPS: 0,0,"",X`. The last digit indicates the cellular technology:\ `7` indicates **LTE Cat-M1**\ `8` indicates **NB-IoT** #### Option 2: Manual Network Selection Start with searching for available networks: ``` AT+COPS=? ``` {% hint style="warning" %} It may take several minutes before the modem responds. {% endhint %} The modem responds with the **names** and the **MCCMNC** codes of the available networks. It also shows the cellular technologies the networks support: ``` +COPS: (1,"vodafone NL","voda NL","20404",8),(1,"NL KPN","NL KPN","20408",0),(1,"vodafone NL","voda NL","20404",9),(1,"T-Mobile NL","TMO NL","20416",0),(1,"NL KPN","NL KPN","20408",8),(1,"vodafone NL","voda NL","20404",0),(1,"T-Mobile NL","TMO NL","20416",8),(1,"T-Mobile NL","TMO NL","20416",9),,(0,1,2,3,4),(0,1,2) ``` **Manually set the network and the cellular technology**: ``` AT+COPS=1,2,"XXXXX",7 ``` Replace `XXXXX` with the **MCCMNC** code of your operator, for example`"20404"` for Vodafone NL. Use `7` for **LTE Cat-M1**. ### Network Activation **Set the APN to** `data.mono`: ```json AT+CGDCONT=1,"IP","data.mono" ``` Validate if the **APN** is set correctly: ``` AT+CGDCONT? ``` Expected response: `+CGDCONT: 1,"IP","data.mono","10.X.X.X",0,0,0,0,0,0` **Activate the PDP (packet data protocol) context**: ``` AT+CGACT=1,1 ``` **Test** if the PDP context is activated: ``` AT+CGACT? ``` Expected response: `+CGACT: 1,1` #### Query the signal measurement request a specific network measurement, such as signal strength, noise levels, or other metrics: ``` AT%MEAS="8" ``` Example response: `%MEAS:Signal Quality:RSRP=-90,RSRQ= -19,SINR= -11,RSSI= -65` **Reports the information of serving cells** ```bash AT+QENG="servingcell" ``` Example response: +QENG: "servingcell","NOCONN","eMTC","FDD",425,02,3,394,1400,3,5,5,322,-92,-19,-62,-10,38 **Check the radio signal strength and signal quality:** ```bash AT+CSQ ``` {% hint style="info" %} `+CSQ` returns 2 values separated by a comma. The first value represents the **signal strength** and provides a value between 0 and 31; higher numbers indicate better signal strength. The second value represents the **signal quality** indicated by a value between 0 and 7. If `AT+CSQ` returns `99,99`, the signal is undetectable or unknown. {% endhint %} #### Validate if your device received an **IP address**: ```bash AT+CGPADDR ``` Expected response: `+CGPADDR: 1,XX.XXX.XX.XXX` {% hint style="success" %} Do you see an IP address? **Congratulations! You’ve successfully connected the Quectel modem to Monogoto 🎉** {% endhint %} ## Test the connection by sending a PING A PING test can be performed to test if the modem has an active data connection with a mobile network. {% hint style="warning" %} When cellular modems are idle for a long period of time, cell towers might drop the data connection to save resources. Sending regular PINGs is a good method for testing the data connection, as well as for keeping the connection alive because the operator registers your device as being actively used. {% endhint %} **Send 5 PINGs** to the IP address `8.8.8.8`: ``` AT%PINGCMD=0,"8.8.8.8",5 ``` Example response: ``` %PINGCMD:1,"8.8.8.8",698,116 %PINGCMD:2,"8.8.8.8",232,116 %PINGCMD:3,"8.8.8.8",616,116 %PINGCMD:4,"8.8.8.8",220,116 %PINGCMD:5,"8.8.8.8",206,116 ``` ## Test the connection by sending a UDP payload A UDP payload test when the modem has an active data connection with a Satellite. **Send UDP Payload** to the IP address `18.199.15.247` ``` AT%SOCKETCMD="ALLOCATE",1,"UDP","OPEN","18.199.15.247",1055 ``` response: ``` %SOCKETCMD:1 OK ``` **Set and Active UDP Socket** ``` AT%SOCKETCMD="SETOPT",1,36000,1 AT%SOCKETCMD="ACTIVATE",1 ``` response: ``` OK ``` **Send UDP Socket** ``` AT%SOCKETDATA="SEND",1,13,"48656C6C6F2C20776F726C6421" ``` response: ``` %SOCKETDATA:1,13 ``` **info UDP Socket** ``` AT%SOCKETCMD="INFO",1 ``` response: ``` %SOCKETCMD:"ACTIVATED","UDP","10.22.243.30","34.192.142.126",12345,7 OK ``` **Close UDP Socket** ``` AT%SOCKETCMD="DELETE",1 ``` response: ``` OK ``` ## Useful Links * [Quectel BG950S-GL product page](https://www.quectel.com/product/lpwa-bg950s-gl-cat-m1-nb2/) * [BG950S-GL\_User\_Guide\_V1.0](https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M0mPxGpottOEfcucXOR%2Fuploads%2FmCytM70V2sdHz0p55jeH%2Fquectel_bg950s-gl_user_guide_v1-0.pdf?alt=media\&token=e27e2f51-1d9a-42c4-98e4-0cd01da09571)