No adapters. For each of the two Obi202s, only SP1 and SP2 are in use, GV on SP1 and CC on SP2, per the popular CC with CNAM arrangement on here.
Interesting tidbit, one of the units is HardwareVersion 1.2 and the second is HardwareVersion 1.4.
I would encourage syslogging even if you get too much detail. When I did it to troubleshoot issues in the past, it can point you to various commonalities, that may (or may not) occur before each reboot or dropped call.