The system:
OS 100 v2.66 with a SVMi-4e, 8 phones 5 loop start lines on a 6TRK
full Auto Attendant

The problem:
when a user call forwards their desk phone to an external number (ie. cell phone) by using the 601 feature then 9 then the number, and a caller dials their extension number from the Auto Attendant, the call is not completed, the system DOES pick up a line and DOES receive dial tone, but never dials anything (listened to the line with a butt set during testing). The system will not drop the line (pull bridge clips to clear line).

The kicker:
call forwarding works fine when an internal user dials the forwarded extension.

The nitty gritty:
I spent an hour and fifty minutes troubleshooting with Samsung Tech Support to no avail...we were unable to resolve the issue and the call ended with "default and reprogram the system" which I think is Korean for "get off my phone loser, and don't call back!" :shrug:

The question:
Is there anything you can recommend checking or testing before I have to yank the system out and put their old system back in (it's a fresh install)?

Thanks in advance for any suggestions or assistance you may give.