Network Timing Interfaces; External Alarm Inputs; Console - Cisco NCS 540 Hardware Installation Manual
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Also See for NCS 540:
- Configuration manual (72 pages) ,
- Command reference manual (84 pages) ,
- Configuration manual (19 pages)
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Cisco NCS 540 Router Overview
Category
1GE
10GE
25GE
40GE
100GE
1
Network Timing Interfaces
• BITS input or output—The BITS interfaces support clock recovery from either a T1 at 1.544 MHz or an
• 1PPS input or output and ToD input or output—This shielded RJ-45 interface is used for input or output
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.
Use an SMB connector on the front panel for the following:
• GPS 10 Mhz input and output—10 MHz input for GPS Synchronization.
• GPS 1 PPS input and output—1 PPS input for GPS Synchronization.
External Alarm Inputs
The router supports four dry contact alarm inputs through an RJ-45 jack at the rear panel.
• Normally Open—indicates that no current flows through the alarm circuit and the alarm is generated
Each alarm input can be provisioned as critical, major, or minor.
Console
The RS232 console port provides transmission (Tx), reception (Rx), and ground (Gnd).
Maximum
Interface
32
1
32 / 40*
8 / 16*
2
2
*4x10GE or 4x25GE option
E1 at 2.048 MHz, configurable by software. BITS interface is provided through a standard RJ-48 connector
on the front panel.
of time-of-day (ToD) and 1PPS pulses. ToD format includes both NTP and IEEE 1588-2008 time formats.
when the current is flowing.
Port Number
0/0 - 31
0/0 - 31, 1/0 - 1*
0/24 - 31, 1/0 -
1*
1/0 - 1
1/0 - 1
Cisco NCS 540 Router Hardware Installation Guide
Network Timing Interfaces
11
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