Java - How to detect PCI modem on window 7 (64bit) -


I want to create a Java application like callerID application.
When this is an incoming call, this app will show the phone number in the textbox.
I search the internet, someone has said using this site like the Java Communications API, just like this site.
Check it - I have taken the same step on that site but I get NoSuchPortException when the port "COM3" is found. 

  CommPortIdentifier portId1 = CommPortIdentifier.getPortIdentifier ("COM3");   
 When I'm testing by other callerID applicaiton, then my PCI modem was running fine. 
 Everyone detects PCI modem.   
 
 
 Calculate the ports available on your system as follows:.  
 Then connect to the modem and try one by one to get the port. / P>

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