the problem persists with terminal 1 location or the actual terminal? If its at the location, things to think about that will cause freezing.
1.check patch cables(make sure there is no gunk or any kind of build up.
2.check the jack and test the line from that location.(you can also switch ports on the switch to see if that resolves the issue.
3.also check you power conditioning, you can experience weird occurrences with faulty electric stuff. This also includes power cables and if you have a battery backup there.
I recently went to a location in surf city called blvd clams.
they managed to blow 5 scanners 2 1210 and a pole display. we upgraded there conditioning to ground guards and it resolved the issue.
When it freezes, does it freeze to where u have to reboot it to get it to work? does it flash cannot locate fileserver? If its frozen try sticking a keyboard to the terminal and see if you can end task on aloha. let me know if its just locking up on aloha or the entire terminal