Login in to your ATA and navigate to Voice -->User(FPL)-->Supplementary Service Settings --> CID Setting
Ensure CID setting is set to "yes".
CWCID Setting should be set to "yes" too.
Test by calling your FPL number using Fongo Mobile on smartphone.
Then in your ATA under Voice-->Line (FPL) status, check Last Caller Number. If your Fongo Mobile number is listed, then the ATA has received CID info.
If the issue persists, then the problem involves your phone--or possibly a compatibility issue between your phone and your ATA.
You may need to change Ring Waveform and Ring Voltage under Voice-->Regional-->Ring and Call Waiting Tone Spec
Try Sinusoid for Ring Waveform and 90 for Ring Voltage. Ring Frequency is typically 20.
But you should be checking with the customer service department for your phone for the proper voltage and waveform. I do not accept responsibility for bricked phones (or ATAs).
Lastly, if you have a fake ATA, you should expect problems:
http://voipfan.net/other/fakepap2.php.