CallPath call STLPIND (MWI) - unknown problem
STLPIND failed because of an unexpected or unknown error. The CallPath return code and the parameters passed to and from the call are printed in the error.
STLPIND sets or resets an MWI indicator on a phone.
If this problem occurs frequently, trace it and contact Blueworx Support.
White (error_id = 20501)
Log, System Monitor