Related
Documentation
RJ-45 Connector Pinouts for the External Clock Ports on page 107•
• Connecting the M120 Router to an External Clocking Device on page 163
M120 Alarm Relay Contacts on the Craft Interface
The host interface has two alarm relay contacts for connecting the router to external
alarm devices (see Figure 6 on page 11). Whenever a system condition triggers either
the red or yellow alarm on the craft interface, the alarm relay contacts are also activated.
The alarm relay contacts are located below the Routing Engine ports.
Related
Documentation
• M120 Craft Interface Description on page 11
• Maintaining the M120 Power Supplies on page 277
• Replacing Alarm Relay Wires on the M120 Craft Interface on page 183
17Copyright © 2018, Juniper Networks, Inc.
Chapter 3: Chassis Components and Descriptions
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