Help Center> IoT Device Access> FAQs> Device Integration> How Do I Know the Strength of the NB-IoT Network Signal?
How Do I Know the Strength of the NB-IoT Network Signal?
Run the AT+CSQ command to query the NB-IoT signal strength.
The returned value is +CSQ. <rssi>,<ber>
A larger value of rssi indicates a stronger signal. The formula for calculating the signal strength is as follows: Signal strength = 113 dBm + (rssi x 2)
- rssi = 0: The signal is poor.
- rssi = 31: The signal is very strong.
- rssi = 99: There is no signal.
- The ber field is not used. It is fixed at 99.
If there is no signal or the signal is poor, contact the carrier.
Parent topic: Device Integration
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