•
Equipment protection: A system equipped with two main cards can either operate in
equipment protection mode, or alternatively, the main card in slot MAIN2 operates
as a tributary card. The latter is easier to manage, but does not provide automatic
switch over in case of equipment failures in the transmission and timing
functionality of the main cards.
•
Operations Systems: Remote management with Lucent’s Network Management
Systems or Lucent NMS and local management with Wavestar® ITM-CIT
•
Two possibilities for Power supply :
–
DC (unit contains DC connector)
–
AC via an external AC/DC connector.
•
The Metropolis
®
AMU provides four miscellaneous discrete inputs (MDIs) which
can be used to read external devices assigned by the customer. Examples are
monitoring temperature, humidity, open doors, etc.
The equipment provides four miscellaneous discrete outputs (MDOs) which can be
used to drive external devices assigned by the customer. Examples are signaling
devices, temperature conditioning, etc.
When not assigned by the customer, the Metropolis
®
AMU behave such that
MDO1 has been assigned to indicate power failure (this contact is normally closed
when no power is present). MDO 2, MDO 3, MDO 4 are respectively assigned to
Prompt, Deferred, Information alarms.
Planning Network Applications
Planning considerations
Metropolis
®
AMU
....................................................................................................................................................................................................................................
365-312-847R4.0
Issue 4, November 2006
Lucent Technologies - Proprietary
See notice on first page
4-3