Nortel Networks Circuit Card 311 - Manual (Page 814)

814 NT8D41AA Serial Data Interface Paddle Board
the maintenance terminal without having to stop the system. This is also
used to perform a parallel reload of the system software without affecting
the operation of the switch.
Connector pin assignments
The RS-232-C signals for port 1 are brought out on connector J1 and
the RS-232-C signals for port 2 are brought out on connector J2. The
pinouts of J1 and J2 are identical, so
Table 315 "Connectors J1 and J2 pin
assignments" (page 814) can be used for both ports.
Table 315
Connectors J1 and J2 pin assignments
Pin # Signal Purpose in DTE mode Purpose in DCE mode
1 C
D Carrier detect (Note 1) Carrier detect (Not used)
2 R
D Transmitted data Received data
3 T
D
Received data Transmitted data
4 D
T
R
Data terminal ready Data terminal ready (Note 2)
5 G
N
D
Ground Ground
6 D
S
R
Data set ready (Note 1) Data set ready
7 R
T
S
Request to send (Not Used) Request to send (Note 2)
8 C
T
S
Clear to send (Note 1) Clear to send
Note 1: In DTE mode the signals CD, DSR, and CTS are tied to +12 volts to signify that the port on
the SDI paddle board is always ready to transmit and receive data.
Note 2: In DCE mode the signals DTR and RTS are tied to +12 volts to signify that the port on the
SDI paddle board 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
.