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Section 5: Operation
5-3
LRR Line Card Mode
When configured for LRR Line Card Mode, subscriber alarm messages received on the
10BaseT connection are passed to a 685-5 line card installed in a 685 Digital Alarm Receiver
or a LRR Line card in an MX-8000.
New alarms are briefly displayed in the 7810iR-ent New Alarm window with no audible
alert. When the line card receives and acknowledges the alarm message, the 7810iR-ent
automatically moves the current message into the Alarm History window. The next alarm in
the New Alarm buffer will be displayed in the New Alarm window.
Both the New Alarm window and the Alarm History window are first-in, first-out (FIFO)
buffers that are limited to 49 entries. Once 49 messages have been received, the next
message received will push the oldest alarm off the list. There is no method to save or
archive messages in these buffers.
If the Fail to Manual option is selected during the 7810iR-ent programming, the 7810iR-ent
will allow the operator to select Manual Mode when communication with the line card is lost.
When communication is restored, the 7810iR-ent will send up to 49 unreported messages to
the line card.
If the Fail to Manual option is not selected, a loss of communications between the 7810iR-ent
and the line card will result in AlarmNet being blocked, generating an error message. This
makes all incoming messages from AlarmNet undeliverable or bounced. In this condition,
AlarmNet will route all subscriber message traffic to the secondary CS path (AlarmNet-i,
AlarmNet-M or 800 PLUS).
Alarm Sequence in LRR Line Card Mode
Action
Screen Display
1. LRR Line Card
“
Home” screen showing
a new message being received.
2. The alarm message is sent to the LRR
Line Card, and the local message is
pushed into the History Log, but is not
displayed in the history window.
Summary of Contents for AlarmNet 7810iR-ent
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