Port 1689 is used by Firefox (Mozilla browser).
Port 1822 is used for ES-ELMD. I have heard this term before but honestly don't recall what it signifies and haven't been able to find anything useful on Google.
Port 3232 is an MDT port. A mobile radio transceiver configuration which is becoming increasingly popular includes a radio transceiver connected to both a digital control head and a mobile data terminal (the control head being used for voice communications and the mobile data terminal, or "MDT", being used for communication of digital signals).
Are all of these connections originating from the same IP address? Are they coming from an internal IP address (one of the computers on your network) or an external IP? Do they happen a lot, or just a couple of times?