SIM Card Recognition Failure

Symptom: SIM card could not be detected.

Check List:

* If it is not S-Series, please skip the steps included with EX08 card test.

1. Check if any physical damage or contact problem for the SIM card slot of the cellular module.

2. Test the SIM card on your cellphone.

3. Try different SIM cards on the cellular module.

4. Swap a cellular module, if you have one.

5. If failure happens on above 4 steps. And if the PBX is installed with the other EX08 board, try to install the cellular module on the other EX08 board.

Log & Packet Capture: 

If you can’t resolve the issue, please submit the following information to Yeastar.

1. Post us the test result of the check list.

2. Post us the System Log (S-Series), Dmesg Log (U-Series & Gateway)