Cisco ASR 920 series Manual de instalación del hardware - Página 16
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Cisco ASR 920 Router Features
Table 1-1
Specification
Combo Ports
Copper Port LEDs
Temperature Sensors
BITS/ToD
External Interfaces
The Cisco ASR 920 routers have these external physical interfaces on the front panel:
Network Interfaces
The network interfaces are provided through fixed ports.
•
•
•
Network Timing Interfaces
•
•
External Alarm Inputs
The Cisco ASR 920 router supports four dry contact alarm inputs through an RJ-45 jack on the front
panel.
•
Each alarm input can be provisioned as critical, major, or minor.
Management Interfaces
The Cisco ASR 920 routers have the following management interfaces:
Cisco ASR 920 Series Aggregation Services Router Hardware Installation Guide
1-6
Cisco ASR-920-12CZ and Cisco ASR-920-4SZ Router Specifications (continued)
ASR-920-12CZ-A/ASR-920-12CZ-D
Ports 4 to 11 are combo ports
Link/Activity/Duplex LED indication Link/Activity/Duplex LED indication
Four temperature sensors
External ports for BITS/TOD
GE SFP ports—supports 100/1000 modes
GE Copper RJ-45 ports—supports 10/100/1000 operation
10GE SFP+—supports 10G/1G mode depending on the SFP+/SFP in the network interface slot.
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.
Normally Open—indicates that no current flows through the alarm circuit and the alarm is
generated when the current is flowing.
Chapter 1
Cisco ASR 920 Series Aggregation Services Router Overview
ASR-920-4SZ-A/ASR-920-4SZ-D
No combo ports
Three temperature sensors
External ports for BITS/TOD
OL-32751-01