CallPath call STLXTND (Extend_Call) - unknown problem
STLXTND 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.
STLXTND performs a single step transfer on switches that support this call.
If this problem occurs frequently, trace it and contact Blueworx Support.
White (error_id = 20501)
Log, System Monitor