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Connecting the Fan Tray Alarm Port
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
Warning
connect the T1/E1 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 port(s) 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 1 and Type 3 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.
Patch Panel Connectors
The PANEL-48-1-DIN and PANEL-48-3-DIN provide 48 DIN 1.0/2.3 connectors on the front side of the
patch panel. These connectors terminate to 75 ohm coaxial cable through the DIN plug.
The PANEL-48-1-RJ48 provide 48 RJ45 connector on the front side of the patch panel. These connectors
terminate to 110 ohm T1/E1 cable through a RJ45 connector.
Figure 23: Patch Panel Connector on the Patch Panel
Connecting the Fan Tray Alarm Port
The fan tray includes an alarm port that maps to 4 dry contact alarm inputs.
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. The
open/close configuration is an option controlled in IOS.
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
Warning
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 port(s) 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.
Cisco NCS 4216 Hardware Installation Guide
60
Installing the Cisco NCS 4216
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