set up AirLink GX450 LTE Cellular Modem, no incoming calls

Hi, I have a customer that wants to use the AirLink GX450 LTE Cellular Modem for sending sms Text form a closed private network at a prominent engineering college. The only way he will consider using this is if incoming calls can be blocked. He requires only one way communications and will not allow calls coming back. Is this possible to do on this modem or any modem?

Speak to the service provider about barring incoming calls :question:

eg, … ll-barring