Modules

The principal modules associated with transaction routing are as follows:

DFHAPRT
is the relay program for non-APPC devices, and for APPC devices when the device initiates a transaction by sending an attach FMH5 to CICS®.
DFHCRT
is the relay program for APPC devices when CICS sends an attach FMH5 to the device.
DFHRTSU
is the program which maintains the state of a surrogate APPC session during syncpoint
DFHXTP
is the data transformation program for terminal sharing. It constructs and interprets data streams flowing between terminal-owning and application-owning regions, for both APPC and non-APPC transaction routing environments.
DFHZTSP
is the terminal sharing program. It is used by transaction routing for devices of all types, exclusively so for non-APPC devices.
DFHZXRL
runs in the application-owning region to route APPC requests to the terminal-owning region.
DFHZXRT
runs in the terminal-owning region to receive APPC requests from the application-owning region, and issue them to the APPC device.
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