AT&T 76450 - Manual (Page 15)

Common Systems Connection Standards AT&T Services, Inc
Date: June 2013
ATT-TP-76450, Issue 15
Copyright © 2013, AT&T . All Rights Reserved.
Page 15
4 Alarms
Remote (Telemetry) Alarms:
4.1 All power and environmental related equipment (Network Elements – NE) deployed in an
AT&T Transport or Equipment Location (TEL Site) or Non-TEL Site location must be capable of
remote /telemetry surveillance for failed and threshold activities.
•
Remote/telemetry surveillance - Involves providing Alarm, Status and Control (AS&C)
capabilities for network equipment to a remotely located surveillance center. Remote
surveillance interfaces are well-defined and supported in all AT&T regions.
•
For possible remote/telemetry protocol types see table 4.1 below.
Local Alarms:
4.2.1 Local alarms are required for all Power devices. At a minimum Power devices should
provide Major and Minor alarms, intended for either audible and/or visual usage.
4.2.2 Local alarm are required for Environmental alarm sensors. Each sensor would produce a
single alarm or threshold crossing intended for either audible and/or visual usage.
4.2.3 Beyond the requirements listed in sections 4.2.1 and 4.2.2 above, NEs are not required
to provide local alarms. A power alarm or environmental sensor that is unique to a given NE is
not required for local alarming. Local alarm indicators are not required beyond those located on
the face of the device. Customer Premise locations are exempt from local and telemetry alarm
requirements.
•
Local surveillance - Involves the annunciation of equipment alarms via audible and/or
visual alarm indications within the network equipment space.
Separation of Local Alarms:
4.3 For those NEs required to provide local alarms, those local alarms are required to be
provided by separate outputs from the remote alarms.
Footnote: The term "Network Element" is used within this document to refer to any and all
equipment other than switching equipment deployed in an AT&T TEL Site or remote location.
This would include, but is not limited to transport, conditioning, power and testing equipment as
well as environmental and building operations sensors.
Audible Alarm Cut-off (ACO):
(
This section only applies in those cases where local alarms are required.)