Nortel Networks 553-3001-211 manual Backplane pinout and signaling, Patch pair or

Page 502 of 894 NT7D16 Data Access card

Backplane pinout and signaling

Two 40-pin, and two 20-pin edge connectors connect the card to the backplane. The detailed pinout configurations are listed in Tables 165 and 166.

Table 165

RS-232-C and RS-422 pinouts for first three DAC ports (Part 1 of 2)

	I/O cable			RS-232-C
		Pair				RS-422	Patch pair or
Pair	Pin	color	Unit no.	Signal	Pin no.	Signal	octopus
1T	26	W-BL	UNIT 0	TD0	2	RDA0
1R	1	BL-W		RD0	3	RDB0
2T	27	W-O		DTR0	20	SDA0
2R	2	O-W		GND0	7	SDB0	Connector
3T	28	W-G		DCD0	8		1
3R	3	G-W		DSR0	6
4T	29	W-BR		RI0	22
4R	4	BR-W		CTS0	5
5T	20	W-S	UNIT 1	TD1	2	RDA1
5R	5	S-W		RD1	3	RDB1
6T	31	R-BL		DTR1	20	SDA1
6R	6	BL-R		GND1	7	SDB1	Connector
7T	32	R-O		DCD1	8		2

Note 1: The RS-232 pinout follows the standard set by the QPC723 RILC.

Note 2: The RS-422 pinout follows the standard set by the QPC430 AILC (first pair: Receive

Data; second pair: Send Data). Receive and Send are designated with reference to the DTE; therefore, they must be turned over in the cross-connect since most DTE have first pair as Send Data and second pair as Receive Data.

553-3001-211 Standard 2.00 September 2004