Physical Description - Avaya Nortel Communication Server 1000 Reference

Physical description

The NT8D41BA Quad Serial Data Interface paddle board is a printed circuit board measuring
31.12 by 12.7 cm (12.25 by 5.0 in.). See
page 474.
The QSDI paddle board can be used in a system backplane for a total of four serial ports. Up
to 12 other serial ports can be added by plugging standard serial cards into standard system
slots. The serial ports on the card are addressed as a pair of consecutive addresses (0 and 1,
2 and 3, up to 14 and 15), using switches SW15 and SW16.
The front edge of the card has four serial port connectors, an Enable/Disable switch (ENB/
DIS), and a red LED. The LED indicates the card status. It is lit when the following occurs:
• the ENB/DIS switch is set to disable
• all four ports are disabled in software
• all four ports are not configured in the configuration record
Circuit Card Reference
Figure 151: NT8D41BA QSDI paddle board
Physical description
on
July 2011 473