Alcatel-Lucent 1643 AMS Applications And Planning Manual page 124

System Planning and Engineering
• The 1643 AMS 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 1643 AMS behaves such that MDO 1 has
been assigned to indicate a power failure (normally open contacts will close), MDO
1, MDO 2, MDO 3, MDO 4 are respectively assigned to power failure, Prompt,
Deferred, Information alarms.
• Order wire: An external orderwire system can be connected which uses this
orderwire channel for transparent data transmission via the transmission network.
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6-4 Alcatel-Lucent - Proprietary
See notice on first page
General Planning Information
365-312-801R7.2
Issue 3, May 2007