I'm not sure what you are asking. Are you having a problem with the 3CX Phone, or provisioning the ATA portion of the 3102?
If it's the ATA...
You are going to have to do it manually.
Get the PSTN portion working first.
Pay attention to the ports of each device.
Post back once you've given it a go and some settings can be "tweaked" to allow both parts of the 3102 to work with 3CX.