Output service executes on the global and processes SYSOUT data sets destined for:

• JES3 managed devices
• PSF managed devices
• System Application Printer Interface (SAPI) applications
• NJE (BSC and SNA)
• Process SYSOUT (PSO)

The output service driver receives control after a job completes breakdown in main service, after a job spins off an output data set, or after JES3 spins off an output data set.

JES3 output service performs three distinct functions:

• Queueing output
• Scheduling output
• Writing output