# SIM7000G 1NCE OS UDP

> For the complete documentation index, see [llms.txt](https://help.1nce.com/llms.txt).

```powershell PowerShell
AT+CIPSTART="UDP","udp.os.1nce.com","4445"

OK

CONNECT OK
AT+CIPSEND

> welcome to 1nce os

SEND OK

This is a UDP response message from my server!

AT+CIPCLOSE

CLOSE OK
AT+CIPSHUT

SHUT OK

```

# Preparation

Configure the SIM7000G module with the appropriate network settings, such as the APN and operator ID, and ensure that it is connected to the cellular network.

# Start a UDP Connection

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A UDP connection towards a server with a given UDP port can be started with 'AT+CIPSTART=...'. The AT Command needs to list the UDP protocol, the target URL or IP and the used UDP Port. If the connection is successfully opened, 'CONNECT OK' is returned.

# Send UDP Data

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With 'AT+CIPSEND' the data send mode is activated. Any input send to the modem will be forwarded via the UDP connection. To deactivate the send mode, '1A' encoded as a HEX value needs to be send to the SIM7000G. The modem will acknowledge the sent message with 'SEND OK'.

# Receive UDP Data

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By default, the modem will forward any incomming UDP data while the connection is open to the serial output interface.

# Close UDP Connection

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An active UDP connection can be closed with 'AT+CIPCLOSE'. The modem will close the UDP connection and respond with 'CLOSE OK'.

# Close Data Session

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To close the entire data session that was opened with 'AT+CIICR', 'AT+CIPSHUT' needs to be used. The command will respond with 'SHUT OK'. Afterwards a new session can be started at any point.

# Wrap Up

This guide showed the basic setup of a SIM7000G with a 1NCE SIM to send and receive data using a UDP connection.

For more details and documentation please refer to the AT Command manual of the SIM7000G.