An entry exists in this table for each job in the device,
no matter what the state of the job is. Each device is
represented as a separate device entry in the Host Resources
MIB device table as a device of type 'printer', 'scanner',
'fax', etc. The management station references each job using
the xcmJobIdentifierOnSystem assigned by this logical
(for spooling) device that accepted the job submission
(by some other protocol).