NDC+

NDC+ is the terminal control application from NCR. It is table-driven and can be
customised to meet your own requirements.
NDC+ is the 4th generation version of NDC, and has been developed for NCR’s 4th
generation SSTs and Account Services Terminals. It allows you to run 4th generation
and Personas terminals in your network, in either Diebold Emulation of Native mode.

The NDC+ software system is made up of two parts:
-Terminal application
-Central application

The terminal application gathers transaction details from the cardholder and sends
these details in a transaction request message to the Central
When a terminal receives a transaction reply from the central, it completes the
transaction.

The terminal application responds to terminal commands from the central, such as
go-in-service or go-out-of-service, and requests for information, such as tallies, by sending solicited status messages to central. An unexpected event can be reported to central using an unsolicited status message.

The central application receives transaction request messages from the terminal,
and determines whether the transaction should be approved or declined. It controls
the terminal by sending terminal commands to it and acting on responses received.

The central application must be able to decode and act on the messages it receives
from the terminal.

The central application must also be able to code the messages in the form that the
NDC+ software in the terminal understands.