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use the same transaction list, different from the transaction
list for 2795's assigned to the AS^for corresponding
rotary-switch settings (transaction code). Therefore, if
both 2795's and 2796's are attached to a given area station,
the transaction number selected on the 2795's references
one transaction list and is subject to certain control steps
and routing, while the corresponding transaction number
selected on the 2796's references another transaction list
and is subject to different control steps and routing.
Transaction Expansion
The DEU transaction selection may be expanded beyond
the nine transaction codes on the left-hand rotary switch by
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using "transaction expansion." Transaction expansion allows
the right-hand (upper right-hand for 2796) rotary switch to
supply a second digit to the transaction code, allowing a
maximum selection of 81 different transactions.
DEU transactions selected by transaction expansion
must be single data entry transactions.
Transaction expansion is a prerequisite when using the
routing capability provided by the Expanded Capability
feature.
Transaction expansion is activated when the programmer
defines the transaction codes in the transaction group
(TGROUP) macro. See IBM System/360 Operating System,
Basic Telecommunications Access Method, GC30-2004; or
IBM System/360 Disk Operating System, Basic Telecommu
nications Access Method, GC30-5001.
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