Functional Description - Avaya Nortel Communication Server 1000 Reference

NT8D41BA Quad Serial Data Interface Paddle Board
Figure 151: NT8D41BA QSDI paddle board

Functional description

The NT8D41BA QSDI paddle board has four asynchronous serial ports. These serial ports are
connected to the I/O panel in the back of the shelf using special adapter cables. The serial
ports can be used to connect the Meridian 1 system to a terminal, a printer, a modem, or to an
other system processor.
The QSDI paddle board design contains four Universal Asynchronous Receiver/Transmitters
(UARTs) and the logic necessary to connect the UARTs to the system processor bus. See
Figure 152: NT8D41BA QSDI paddle board block diagram
474 Circuit Card Reference
Comments? infodev@avaya.com
on page 475. Other logic on the
July 2011