Cisco XR 12000 Series Manual do Utilizador descarregar pdf (Página 37)

2-7

Cisco XR 12000 Series Router SIP and SPA Hardware Installation Guide

OL-17438-04

Chapter 2 Overview: Cisco XR 12000 Series Router Shared Port Adapters

2-Port and 4-Port Channelized T3 to DS0 SPA Overview

The following sections describe the 2-Port and 4-Port Channelized T3 SPA:

• 2-Port and 4-Port Channelized T3 SPA LEDs, page 2-7

• 2-Port and 4-Port Channelized T3 SPA Interface Specifications, page 2-8

• 2-Port and 4-Port Channelized T3 SPA Cables and Connectors, page 2-8

2-Port and 4-Port Channelized T3 SPA LEDs

The 2-Port and 4-Port Channelized T3 SPA has three types of LEDs. There are two LEDs for each port

on the SPA, and one STATUS LED.

Figure 2-2 shows an example of these LEDs on a 4-Port Channelized

T3 SPA.

Figure 2-2 4-Port Channelized T3 SPA Faceplate

Ta bl e 2-4 2-Port and 4-Port Clear Channel T3/E3 SPA Connectors

Connector Label Meaning

TX Transmitted signals appear on the center contact, and the outer shield is ground

for the 75-ohm RG-59 coaxial cable you attach to the TX BNC connector.

RX Received signals appear on the center contact, and the outer shield is ground for

the 75-ohm RG-59 coaxial cable you attach to the RX BNC connector.

1 C/A (Carrier/Alarm) LED 4 RX (Receive) connector

2 A/L (Active Loopback) LED 5 STATUS LED

3 TX (Transmit) connector

C/A

STATUS

SPA-4XCT3/DS0

A/L

C/A

A/L

C/A

A/L

C/A

A/L

3 4 5

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Cisco XR 12000 Series Manual do Utilizador Página 37