The pins on the alarm port are passive signals and can be configured as Normally Open (an alarm generated
when current is interrupted) or Normally Closed (an alarm is generated when a circuit is established) alarms.
You can configure each alarm input as critical, major, or minor. An alarm triggers alarm LEDs and alarm
messages. The relay contacts can be controlled through any appropriate third-party relay controller. Ensure
that the shield is terminated to ground at both ends. The open and close configuration is an option controlled
in IOS.
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, connect
the alarm ports only to intra-building or unexposed wiring or cable. The intrabuilding cable must be shielded
and the shield must be grounded at both ends. The intra-building ports of the equipment or subassembly must
not be metallically connected to interfaces that connect to the OSP or its wiring. These interfaces are designed
for use as intra-building interfaces only (Type 2 or Type 4 ports as described in GR-1089-CORE) and require
isolation from the exposed OSP cabling. The addition of Primary Protectors is not sufficient protection in
order to connect these interfaces metallically to OSP wiring.
Warning
Only Pins 1, 2, 4, 6, and 8 are available for customer use. The remaining pins are for Cisco manufacturing
test, and should not be connected. Use a shielded cable for connection to this port for EMC protection. The
External Alarm Input Pinout
table summarizes the pinouts on the alarm port in the
section.
Procedure
Step 1
Attach a RJ45 cable to the alarm port.
Step 2
Attach the other end of the RJ45 cable to the relay controller.
Connector and Cable Specifications
For more information on cable specifications and pinouts, see the
section.
Installing the Cisco ASR 914 Router
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Installing the Cisco ASR 914 Router
Connector and Cable Specifications