Nortel Networks 1750 Appendix A, Technical specifications, X.21 cable pinouts continued, Standard

			Appendix A	Technical specifications 95
Table 33 X.21 cable pinouts (continued)
Standard-			Standard-
wired end		Pair number	wired end
28-pin male	Signal name	and conductor	15-pin male		Notes
20	DTRA	Pair 9A	No conn		The term No conn means
					the wire does not connect
					to a pin in the 15-pin
					connector.
23	DTRB	Pair 9B	No conn		The term No conn means
					the wire does not connect
					to a pin in the 15-pin
					connector.
8	DCDA	Pair 10A	No conn		The term No conn means
					the wire does not connect
					to a pin in the 15-pin
					connector.
10	DCDB	Pair 10B	No conn		The term No conn means
					the wire does not connect
					to a pin in the 15-pin
					connector.
18	LL	Pair 11A	No conn		The term No conn means
					the wire does not connect
					to a pin in the 15-pin
					connector.
21	RL	Pair 11B	No conn		The term No conn means
					the wire does not connect
					to a pin in the 15-pin
					connector.
25	TM	Pair 12A	No conn		The term No conn means
					the wire does not connect
					to a pin in the 15-pin
					connector.
26	M0	Pair 12B	No conn		The term No conn means
					the wire does not connect
					to a pin in the 15-pin
					connector.
27	M1	Pair 13A	No conn		The term No conn means
					the wire does not connect
					to a pin in the 15-pin
					connector.
28	M2<-SIGNAL GROUND	Pair 13B	8		Wires 13B and 14B
					connect to pin 8 in the
					15-pin connector.

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