Name: Cisco ASR-920-24SZ-IM
Brand: Cisco
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Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Router Hardware Installation Guide

Chapter 1 Overview

Cisco ASR 920 Series Routers Features

• 10GE SFP+—supports 10G mode.

Network Timing Interfaces

Note Network timing interface is available only on Cisco ASR-920-24SZ-IM Router.

• BITS input or output—The BITS interfaces support clock recovery from either a T1 at 1.544 MHz

or an E1 at 2.048 MHz, configurable by software. BITS interface is provided through a standard

RJ-48 connector on the front panel.

• 1PPS input or output and ToD input or output—This shielded RJ-45 interface is used for input

or output of time-of-day (ToD) and 1PPS pulses. ToD format includes both NTP and IEEE

1588-2008 time formats.

The same RS422 pins for 1PPS and TOD are shared between input and output directions. The

direction for each can be independently configurable through software.

• GPS 10 Mhz input and output—10 MHz input for GPS Synchronization. This connector on the

front panel can provide 10MHz output as well from Cisco ASR-920-24SZ-IM Router. The direction

can be configured using software.

• GPS 1 PPS input and output—1 PPS input for GPS Synchronization. This connector on the front

panel can provide 1 PPS output as well from Cisco ASR-920-24SZ-IM Router. The direction can be

configured using software.

External Alarm Inputs

The Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router supports four dry contact

alarm inputs through an RJ-45 jack on the front panel.

• Normally Open—indicates that no current flows through the alarm circuit and the alarm is

generated when the current is flowing.

Each alarm input can be provisioned as critical, major, or minor.

Management Interfaces

The Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router have the following

management interfaces:

Management ENET Port

A single management copper ENET port supporting 10/100/1000Base-T operation is provided on the

front panel. It uses a standard RJ-45 jack.

Note This is not a data plane port.

Note This interface does not support Synchronous Ethernet Clocking.

Cisco ASR-920-24SZ-IM Installation Guide

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