If you want to try setting it up with J-Field:
1. Create a general group profile for an RTN. You'll need to give it a bogus IP. Use port 8010.
2. In Base/Rover setup, Connect the Triumph-LS to the Triumph-3 by Bluetooth
3. Click on the Left pane (communication settings)
4. Click on TCP Server Configuration
5. Click on Cellular
6. Make sure that the cellular module is Off (If it is on, select Off, return to base rover main screen and hit To Base, then follow directions above starting at step 3
7. If cellular is off, then click settings and change the AP Name to the appropriate Verizon static IP APN. If it's a Javad card, use we01.vzwstatic (other regions of the country will have variations of this APN).
8. Return to Base Rover main screen and hit To Base.
9. Click on Left pane (communication settings), click TCP Server Configuration, Click on Cellular, and turn on the Cellular Module.
10. Return to the main Base Rover screen and hit To Base.
Remember to make sure that the cellular antenna is attached and that it is attached to the correct port.
If you are successful, the cellular LED will be green. On your first attempt give it a few minutes to find the network. You can click on the panel just below Disconnect and see the cellular status for the Triumph-3. Hopefully you will see the Operator show "Verizon" and the RSSI with an appropriate signal value.
I think that's all of the steps. Basically you want to make the change to the APN with the cellular modem off, then turn the cellular modem on. To Base sends the settings that you made, so when you click Cellular Module OFF it isn't actually turning it off until you hit To Base and conversely to turn it on you must select Cellular Modem On and then hit To Base to send the command.