Patton electronic 2701/B Appendix D, X.21 Interface DB-15 Female Connector DTE /DCE Configuration

APPENDIX D

INTERFACE PIN ASSIGNMENT

X.21 Interface

(DB-15 Female Connector)

(DTE /DCE Configuration)

Pin #	Signal
1	Frame Ground
2	T (Transmit Data-A)
3	C (Control-A)
4	R (Receive Data-A)
5	I (Indication-A)
6	S (Signal Element Timing-A)
7	BT (Byte Timing-A)
8	SGND (Signal Ground)
9	T/ (Transmit Data-B)
10	C/ (Control-B)
11	R/ (Receive Data-B)
12	I/ (Indication-B)
13	S/ (Signal Element Timing-B)
14	BT/ (Byte Timing-B)

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