CallPath call STLPIND (MWI) - response not received within timeout period
An earlier STLPIND call timed out waiting for a response from CallPath indicating that CallPath has not yet received a confirmation. If the confirmation arrives after the timeout, it is ignored. The MWI number and other details relating to the earlier STLPIND call are printed in the error.
STLPIND sets or resets an MWI indicator on a phone.
If this problem is caused by a timeout, increase the timeout value in the Set_MWI custom server call. If this reduces the problem, the problem may be caused by the system load.
White (error_id = 20501)
Log, System Monitor