Nortel Networks 553-3001-211 manual Pin number Signal functions To DCE From DCE Circuit

Page 848 of 894 QPC513 Enhanced Serial Data Interface card

Table 263

Connector J1 and J2 pin assignments – RS-232-C interface (Part 2 of 2)

		Signal source
				EIA
Pin number	Signal functions	To DCE	From DCE	circuit
17	Receiver signal element timing (DCE)	—	3	DD
24	Transmitter signal element timing (DTE)	3	—	DA

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

Table 264

Connector J1 and J2 pin assignments – high-speed interface (Part 1 of 2)

		Signal source
				EIA
			From	circuit
Pin number	Signal functions	To DCE	DCE	(lead)
Ground and
common return
1	Shield	n/a	n/a
7	Signal ground (SG)	n/a	n/a	AB
Data
2	Transmitted data – lead A	3	—	BA (A)
3	Received data – lead A	—	3	BB (A)
13	Transmitted data – lead B	3	—	BA (B)
16	Received data – lead B	—	3	BB (B)
Control
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

Note: Pins not used are 9, 10, 11, 18, 19, 21, 22, 25.

553-3001-211 Standard 2.00 September 2004