Nortel Networks Circuit Card 311 - Manual (Page 1108)

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
.