Cabletron Systems 2E42-27R manual 3.4.1.2 2E43-27 or 2E43-27R Cable Connections

Connecting to the Network

b.Verify that the RJ45 connectors on the twisted pair segment have the proper pinouts (Figure 3-7) and check the cable for continuity.

		TO
	SmartSwitch RJ45 Port
	RX+
		1
NOTE:	RX–	2
RX+/RX– and TX+/TX–
must share a common	TX+	3
color pair.
	TX–	6

TO

10BASE-T Device Port

1 RX+

2 RX–

3 TX+

6 TX–

RJ45 to RJ45

1574-30

Figure 3-7 Cable Pinouts - (RJ45) Crossover Cable

c.Check that the twisted pair connection meets the dB loss and cable specifications outlined in Chapter 2.

If a link is not established, contact the Cabletron Systems Global Call Center. Refer to Section 1.6 for details.

4.Repeat steps 1 through 3 above, until all connections have been made.

3.4.1.22E43-27 or 2E43-27R Cable Connections

When facing the front panel of a 2E43-27 or 2E43-27R, the left RJ21 is the connector for 10BASE-T ports 1 through 12. The right RJ21 is for the 10BASE-T ports 13 through 24 connections. All 24 ports have internal crossovers.

2E42-27/2E42-27R/2E43-27/2E43-27R User’s Guide 3-11