Telit UL865 3G Modem ATD*99***1# Command "NO CARRIER" Problem

Published: 5/10/2017
Telit UL865 3G Modem ATD*99***1# Command "NO CARRIER" Problem
Source: ELECTRONICS.STACKEXCHANGE.COM

Currently, I am working on Telit UL865-EUD 3G Modem. I worked with Telit GL865 GPRS modem before that's why I am familiar with AT commands and initialization logic. My problem is that my UL865 modem always returns "NO CARRIER" to ATD*99***1# command. It is not only specific to ATD*99***1#. It results also same with other ATD Commands. UL865 module is working. I attached to the network and open

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