Device to Cloud Getting Started Onboard UDP Devices Step by Step

Introduction

This chapter describes how you can onboard your UDP device to Device to Cloud.

To onboard a UDP device to Device to Cloud perform the following steps:

  1. Register the device in the device inventory of Device to Cloud
  2. Configure your UDP device for Device to Cloud
  3. Verify if your UDP device can send and receive UDP messages with Device to Cloud

The second step is performed on your UDP device and depends heavily on the modem manufacturer. The way to configure APN, DNS, socket parameters, and transmission behavior is different for each vendor and firmware.

For a general overview of UDP, when to choose it, and limitations, see About UDP .

Please note that UDP is only supported with SIM cards that have access to the Device to Cloud APN. Please contact D2C support to get a SIM card.

Register UDP device with Device to Cloud

Before your UDP modem can exchange payload data with Device to Cloud, register the device in the inventory.

For UDP devices, the recommended registration path is the API endpoint documentation:

Please make sure that the nodeID in the device provisioning request uses the format urn:gsma:imei:<imei> and that you configure the correct modem IMEI. D2C identifies UDP devices via the Telekom mobile network (SIM IMSI/MSISDN) and uses the registered IMEI mapping for tenant routing. The IMEI of the registered device must match exactly with the IMEI in the device provisioning request.

Configure UDP device for Device to Cloud

After successful registration, configure your UDP modem to send datagrams to the Device to Cloud UDP endpoint.

Device to Cloud UDP endpoint parameters

ParameterValue
Hostnameudp.d2c.iot.telekom.de
Port15501
APNDEVICE-TO-CLOUD.IOT.TELEKOM.DE
Important:
The D2C UDP endpoint is only reachable via the Telekom mobile network using the Device to Cloud APN. It is not accessible from the public internet.

Device-specific UDP configuration

The practical AT command flow depends on your modem vendor.

DeviceDescription
Quectel BC660KStep-by-step AT command examples for serial setup, network attach, UDP socket setup, uplink, and downlink behavior.

Verify connection between UDP device and Device to Cloud

In the previous sections, you registered your UDP device and configured it for the D2C UDP endpoint. The next step is to verify end-to-end communication.

Typical checks:

  1. Verify that the modem attaches to the mobile network and receives an IP address.
  2. Verify that a UDP socket can be opened to udp.d2c.iot.telekom.de:15501.
  3. Send an uplink payload and verify that it is received in the platform.
  4. Create a downlink message and verify that it is delivered to the modem.

For detailed modem-side verification examples use:

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