Roaming sim card on EHS6 | Thales IoT Developer Community
February 27, 2017 - 12:23pm, 5746 views
I am using a roaming SIM card on EHS6 module and facing some difficulties when selecting network operator.
1, I sometimes experience switching of network operators. The module sometimes stays on a network for a few seconds and then switches to another network.
2, When disconnection happens, I send AT+COPS=0 but receive error: "operation temporary not allowed" or no response from module. I wait for 5 minutes but still no response, so I send some random character and the operation was aborted.
3, I try sending AT+COPS=2 to deregister, then send AT+COPS=0 to test and the above mentioned happens.
Probably I am facing the same problem?
I am wondering if probably there are cases where AT+COPS=0 is not supposed to be used?