On a very busy mainframe system, you may have to wait several minutes before you know whether the connection is successful.
Depending on the server configuration selected, the Arbutus zSeries Server may submit a session job. If the system is busy or unable to start the job, the server cancels the session after a specified time. The “Timeout. Job XXXX cancelled” message appears in the Server Activity log, where XXXX is the job number assigned by the server.
The default value for this time-out is 300 seconds, but another value may have been set by the system administrator.