Get started with the XBee Smart Modem Development Kit Configure and update your XBee
Digi XBee3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
33
8. Wait for a connection. You may wait for up to 5-6 minutes.
n If you have a connection: This process is complete. The LED on the development board
blinks when the XBee Smart Modem is registered to the cellular network. See Check for
cellular registration and connection.
n If you do not have a connection: If the LEDremains solid, registration has not
occurred properly.
a. Repeatsteps 1-5 to make sure you have correctly configured NB-IoT.
b. Ifyou still do not have a connection, contact your carrier to confirm that the
carrier has correctly configured the service.
l If the carrier makes a change to the service, reset the module and wait
5-6 minutes.
l If the carrier does not make a change to the service, then contact Digi
support.
Check for cellular registration and connection
In the following examples, proper cellular network registration and address assignment must occur
successfully. The LED on the development board blinks when the XBee Smart Modem is registered to
the cellular network; see Associate LED functionality. If the LEDremains solid, registration has not
occurred properly.
Registration typically takes 5 - 6 minutes the first time a device is connected to the network.
Note Make sure you are in an area with adequate cellular network reception or the XBee Smart
Modem will not make the connection.
Note Check the antenna connections if the device has trouble connecting to the network.
In addition to the LED confirmation, you can check the AT commands below in XCTU to check the
registration and connection.
To view these commands:
1. You must have previously added at least one device. See Add a device.
2. Open XCTU.
3.
Click the Configuration working mode button.
4. Select a device from the Radio Modules list. XCTU displays the current firmware settings for
that device.
Note To search for an ATcommand in XCTU, use the search box .
The relevant commands are:
n AI (Association Indication) reads 0 when the device successfully registers to the cellular
network. If it reads 23 it is connecting to the Internet; 22 means it is registering to the cellular
network.
n MY (Module IPAddress) should display a valid IPaddress. If it reads 0.0.0.0, it has not
registered yet.
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