# Quectel CC660D-LS Satellite NTN Network
The Quectel CC660D-LS series supports IoT-NTN (satellite), It complies with 3GPP Release 17 standards, ensuring optimal performance for advanced IoT applications
### Prerequisites
* Monogoto SIM
* [CC660D-LS](https://www.quectel.com/product/cc660d-lbs-satellite-communication-module/?creative=\&keyword=\&matchtype=\&network=x\&device=c\&gad_source=1\&gclid=Cj0KCQiAgdC6BhCgARIsAPWNWH2Pp47q24jMAJ3lK1_kdgRP_hTyuox3TjkF4ULWn1q-_7WJ-GhkTjoaAvMdEALw_wcB)
## Set up EVB Kit
#### Set up the EVB Kit
* **Connect the LTE antenna** and **GPS 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 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 CC660D-LS modem has been established, the board will answer with `OK`.
## Connect the CC660D-LS to Monogoto
{% hint style="info" %}
Keep the **AT Commands manual** next to you for more details about the commands. [**Click** ](https://www.quectel.com/wp-content/uploads/2021/03/Quectel_BG95BG77BG600L_Series_QCFG_AT_Commands_Manual_V2.0-1.pdf)**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**:
ATI
Example response: \
Quectel\_Ltd \
Quectel\_CC660D-LS \
Revision: CC660DLSAAR01A01
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.
**Set the APN to** `data.mono`:
```json
AT+QCGDEFCONT="IP","data.mono"
```
**Lock the modem to a specific region/band**
```
AT+QBAND=1,23
```
{% hint style="info" %}
Although the modem may support many different NTN bands,
Band 23 = Canada
band 255 = L band Global (Taiwan, Australia, New Zealand, Japan)
band 256 = S band Europe
{% endhint %}
**Send registration status**
```
AT+CEREG=2
```
**Set GPS location**
```bash
AT+QGNSSINFO=LATITUDE,LONGITUDE,ALTITUDE,SPEED,ACCURACY
```
{% hint style="info" %}
example
AT+QGNSSINFO=33.998737,-84.095023,40,0,0
{% endhint %}
**Check the current network registration status**
```
AT+QENG=0
```
**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 UDP payload
{% hint style="warning" %}
When using Non-Terrestrial Networks, data can only be sent using UDP.
{% endhint %}
In order to send data using UDP, 3 AT Commands needs to be sent:
1. **Create UDP socket**
2. **Send UDP data**
3. **Close UDP Socket**
### **1. Create UDP socket**
```
AT+QIOPEN=1,0,"UDP","18.199.15.247",1055,1234,0
```
Example response:
`+QIOPEN:0,0`\ `AT+QISEND=0,2,12`
### **2. Send UDP data**
```
AT+QISEND=0,11,Hello World
```
Example response:
`OK`\ `SEND OK`
{% hint style="warning" %}
Make sure to exactly count the number of characters you send, or you will receive an error.
{% endhint %}
### **3. Close UDP socket**
End your UDP session by closing the UDP socket.
```
AT+QICLOSE=0
```
Expected response: `OK`
## Useful Links
* [Quectel CC660D-LS product page](https://www.quectel.com/product/cc660d-lbs-satellite-communication-module/)
* [Quectel CC660D-LS AT Command](https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M0mPxGpottOEfcucXOR%2Fuploads%2Fs1f8DsClZ8LsLeUz04Hy%2FQuectel_CC660D-LS_AT_Commands.pdf?alt=media\&token=957e43a3-053b-4dc9-98d4-5472b7cbbcb4)
* [Quectel CC660D-LS TCP/IP Application Note](https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M0mPxGpottOEfcucXOR%2Fuploads%2FRfcQUSqnmNWZdk7pd85M%2FQuectel_CC660D-LS_TCP\(IP\)_Application_Note_V1.0.pdf?alt=media\&token=374e0c98-059c-44e8-be3b-37fcbabc4a7a)