ADTRAN TSU IQ+, 1204002L2 user manual 1 B+D Isdn

Appendix A. Pinouts

Table A-6. 4-Wire, V.34, and BRI ISDN DBU Card

Pin Assignments

Pin	Name	Description
4-wire Switched 56
1	R1	Transmit Data from DSU to Network-Ring 1
2	T1	Transmit Data from DSU to Network-Tip 1
3-6	-	Not Used
7	T	Receive Data from Network to DSU-Tip
8	R	Receive Data from Network to DSU-Ring
V.34 and 1 B+D ISDN
1-3	-	Not Used
4	T	Network-Tip
5	R	Network-Ring
6-8	-	Not Used

Table A-7. Pin Assignments for the PRI DBU Card

Pin		Name	Description
1	R1	RXDATA-RING	Receive data from the net-
			work
2	T1	RXDATA-TIP	Receive data from the net-
			work
3		UNUSED	--
4	R	TXDATA-RING	Send data toward network
5	T	TXDATA-TIP	Send data toward network
6,7,8		UNUSED	--

A-4 TSU IQ+ User Manual 61200275L1-1