I have a problem with a TA on a Windows 2000 machine. After about 24 hours, the ISDN dialup starts to fail with error 651. If I shut the machine down, unplug the cable from the ISDN wallbox, plug it back in and reboot, it works again (for about 24 hours). Unplugging the cable from the wallbox seems to be crucial.
I have tried updating the drivers for the TA but no luck. I am thinking faulty TA. Any ideas?
Thanks!