814 NT8D41AA Serial Data Interface Paddle Board
the maintenance terminal without having to stop the system. This is alsoused to perform a parallel reload of the system software without affectingthe operation of the switch.
Connector pin assignments
The RS-232-C signals for port 1 are brought out on connector J1 andthe RS-232-C signals for port 2 are brought out on connector J2. Thepinouts of J1 and J2 are identical, so Table315 "Connectors J1 and J2 pinassignments" (page 814) can be used for both ports.
Table315
Connectors J1 and J2 pin assignments
Pin # Signal Purpose in DTE mode Purpose in DCE mode
1C
DCarrier detect (Note 1) Carrier detect (Not used)
2R
DTransmitted data Received data
3T
DReceived data Transmitted data
4D
T
R
Data terminal ready Data terminal ready (Note 2)
5G
N
D
Ground Ground
6D
S
R
Data set ready (Note 1) Data set ready
7R
T
S
Request to send (Not Used) Request to send (Note 2)
8C
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, Nor tel Networks
.