Specifications

Cisco ONS 15454 Product Overview
Alarm Collection and Display
30
Cisco ONS 15454 Product Overview, R3.3
May 2002
Figure 17 External alarm input and output
Provisioning external alarms and controls provides a “virtual wires” option that you
can use to route alarms and controls from different nodes to one or more alarm
collection centers. For example, in Figure 18, smoke detectors are provisioned as
external alarms at Nodes 1, 2, 3, and 4. The alarms are assigned to Virtual Wire 1, and
Virtual Wire 1 is provisioned as the trigger (control) for an external bell at
Node 1.
RelayRelay
RelayRelay
CTC alarm turns on
an external device
External device
generates CTC alarm
External control External alarms
Heat
sensor
Smoke
detector
Light
Bell
38566
= External alarm
= External control