Cabletron Systems 2E42-27R, 2E43-27R manual Connecting a UTP Segment to the FE-100TX

Connecting to the Network

3.Tighten the two screws on the RJ21 straight cable connector or RJ21 angle adapter, as applicable, to secure it to the device.

NOTE

The cable pinouts for a 25-pair cable (RJ21) can be found in the Cabletron Systems Cabling Guide. Refer to Section 1.7 for details on how to obtain this document.

4.If using the RJ21 angle adapter, plug the RJ21 right-angled connector as shown in Figure 3-9.

5.Verify that a link exists by checking that the port RX LED is ON (flashing yellow, blinking green, or solid green). If the RX LED is OFF and the TX LED is not blinking yellow, perform the following steps until it is on:

a.Verify that the 10BASE-T device at the other end of the twisted pair segment is ON and connected to the segment.

b.Verify that the RJ45 connectors on the twisted pair segment have the proper pinouts and check the cable for continuity.

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.

6.Repeat steps 1 through 5 above, until all connections have been made.

3.4.2Connecting a UTP Segment to the FE-100TX

NOTE

To ensure proper operation, use only Category 5 Unshielded Twisted Pair (UTP) cabling that has an impedance between 85 and 111 ohms.

An FE-100TX installed in port slot 25 and/or 26 has an internal crossover switch. When connecting a workstation, use a straight-through cable and set the Fast Ethernet Interface Module crossover switch shown in Figure 3-10to the crossed over position marked with X.

2E42-27/2E42-27R/2E43-27/2E43-27R User’s Guide 3-13