Nortel Networks Circuit Card User Manual

 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 

 shows the pin 

assignments for J1 and J2 when the port is configured for the high-speed 
interface.

1

Shielded

n/a

n/a

7

Signal ground (SG)

n/a

n/a

AB

2

Transmitted data (TX)

3

—

BA

3

Received data (RX)

—

3

BB

4

Request to send (RTS)

3

—

CA

5

Clear to send (CTS)

—

3

CB

6

Data set ready (DSR)

—

3

CC

8

Carrier detect (CD)

—

3

CF

20

Data terminal ready (DTR)

3

—

CD

15

Transmitter signal element timing (DCE)

—

3

DB

Note: Pins not used are 9 to 14, 16, 18, 19, 21, 22, 25.