Computer Hardware Installation Guide

Functional description 803

Figure 262

NT8D41AA SDI paddle board

Functional description

The NT8D41AA SDI paddle board has two 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

system to a terminal, a printer, a modem, or to an other system processor.

The SDI paddle board contains two Universal Asynchronous

Receiver/Transmitters (UARTs) and the logic necessary to connect the

UARTs to the system processor bus. See Figure 263 "NT8D41AA SDI

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 01.04 Standard

Release 5.0 23 May 2008