Juniper-networks J4350 Manual do Utilizador descarregar pdf (Página 59)

Physical Interface Modules Overview

Figure 17: E3 PIM

STATUS

g002334

The T3 and E3 PIMs provide the following key features:

Onboard network processor

Integrated DSU—Eliminates the need for a se pa rate external device

Subrate and scra mbling options with support for major DSU vendors

Independent internal and external clocking system

Loopback (payload–supported only on T3 PIM, local, and remote), bit error

rate test (B

ERT), and T3 far-end alarm and con trol (FEAC) diagnostics

For pinouts

of cable connectors for T3 and E3 PIMs, see “E3 and T3

BNC Connector Pinout” on page 198.

For alarms, see the configu rin g and monitoring alarms informatio n in

the J-series Services Router Administration Guide.

ForinstallingandremovingaPIM,see“ReplacingaPIM”onpage144.

Status LEDs indicate port status. Table 19 describes the meaning of the LED states.

Table 19: Status LEDs for T3 and E3 Por ts

Color State Description

Green

On steadily Online with no alarms or failures.

Red On steadil

Active wit

h a local alarm. The router has

detected a failure.

Field-Replaceable PIMs 39

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Juniper-networks J4350 Manual do Utilizador Página 59