Computer Hardware Installation Guide

1108 QPC841 Quad Serial Data Interface card
Table 452
Connector J2 pin assignments
Pin
Number Port Signal Purpose in DTE mode Purpose in DCE mode
1
FGD Frame ground Frame ground
2
TD Transmitted data Transmitted data
3
RD Received data Received data
4
RTS Request to send (not
used)
Request to send (Note 2)
5
2
CTS Clear to send (Note 1) Clear to send
6
DSR Data set ready (Note 1) Data set ready
7
GND Ground Ground
8
CD Carrier detect (Note 1) Carrier detect (not Used)
20
DTR Data terminal ready Data terminal ready (Note 2))
9
TD Transmitted data Transmitted data
10
RD Received data Received data
11
RTS Request to send (not
used)
Request to send (Note 2))
12 3
CTS Clear to send (Note 1) Clear to send
13
DSR Data set ready (Note 1) Data set ready
25
GND Ground Ground
24
CD Carrier detect (Note 1) Carrier detect (not used)
23
DTR Data terminal ready Data terminal ready (Note 2))
14
TD Transmitted data Transmitted data
15
RD Received data Received data
16
RTS Request to send (not
used)
Request to send (Note 2))
17 4
CTS Clear to send (Note 1) Clear to send
18
DSR Data set ready (Note 1) Data set ready
19
GND Ground Ground
Note 1: In DTE mode, the signals CD, DSR, and CTS are tied to +12 volts (through a resistor) to
indicate that the QSDI port is always ready to transmit and receive data.
Note 2: In DCE mode, the signals DTR and RTS are tied to +12 volts (through a resistor) to indicate
that the QSDI port is always ready to transmit and receive data.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.