Cisco CX-FEIP-2TX= Installation and con?guration Spécifications télécharger pdf (Page 20)

20 Second-Generation Fast Ethernet Interface Processor (FEIP2) Installation and Conﬁguration

What Is the FEIP2?

Warning The ports labeled “Ethernet,” “10BaseT,” “Token Ring,” “Console,” and “AUX” are

safety extra-low voltage (SELV) circuits. SELV circuits should only be connected to other SELV

circuits. Because the BRI circuits are treated like telephone-network voltage, avoid connecting the

SELV circuit to the telephone network voltage (TNV) circuits.

Table 4 lists the pinouts and signals for the FEIP2-2TX’s RJ-45 connectors.

Table 4 RJ-45 Connector Pinout (FEIP2-2TX)

Note Referring to the RJ-45 pinout in Table 4, proper common-mode line terminations should be

used for the unused Category 5, UTP cable pairs 4/5 and 7/8. Common-mode termination reduces

the contributions to electromagnetic interference (EMI) and susceptibility to common-mode

sources. Wire pairs 4/5 and 7/8 are actively terminated in the RJ-45, 100BASE-TX port circuitry in

the FEIP2-2TX.

Depending on your RJ-45 interface cabling requirements, use the pinouts in Figure 13 and

Figure 14.

Figure 13 Straight-Through Cable Pinout, RJ-45 Connection to a Hub or Repeater (FEIP2-2TX)

Figure 14 Crossover Cable Pinout, RJ-45 Connections Between Hubs and Repeaters (FEIP2-2TX)

Pin Description

1 Receive Data + (RxD+)

2 RxD–

3 Transmit Data + (TxD+)

6 TxD–

Hub or repeaterFEIP

3 TxD+

6 TxD–

1 RxD+

2 RxD–

3 RxD+

6 RxD–

1 TxD+

2 TxD–

H3137

Hub or repeater

3 TxD+

6 TxD–

1 RxD+

2 RxD–

3 TxD+

6 TxD–

1 RxD+

2 RxD–

H3138

Hub or repeater

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 41 42

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Cisco CX-FEIP-2TX= Installation and con?guration Spécifications Page 20

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