Connector Pin Assignments - Nortel Circuit Card Installation Manual

Connector pin assignments

Table 268
Connector J1 and J2 pin assignments – RS-232-C interface (Part 1 of 2)
Pin number
Ground and
common return
1
7
Data
2
3
Control
4
5
6
8
20
Timing
15
Note: Pins not used are 9 to 14, 16, 18, 19, 21, 22, 25.
QPC513 Enhanced Serial Data Interface card
Table 268 shows the pin assignments for J1 and J2 when the port is
configured for RS-232-C interface, and Table 269 on
assignments for J1 and J2 when the port is configured for the high-speed
interface.
Signal functions
Shielded
Signal ground (SG)
Transmitted data (TX)
Received data (RX)
Request to send (RTS)
Clear to send (CTS)
Data set ready (DSR)
Carrier detect (CD)
Data terminal ready (DTR)
Transmitter signal element timing (DCE)
page 860
Signal source
To DCE From DCE
n/a
n/a
3
—
3
—
—
—
3
—
Circuit Card Description and Installation
Page 859 of 906
shows the pin
EIA
circuit
n/a
n/a AB
— BA
3 BB
— CA
CB
3
CC
3
3 CF
— CD
DB
3