User Manual

AS8100 Sitespan
Release Description
DLP 001
605-0000-449
Issue 1.1 Date 28/10/98
Page 4 of 2
Loss of Comms
with ST
Radio monitoring of the
remote Subscriber
Terminal
Sitespan will generate this alarm if the
radio link is lost between the CT and its
independent ST (this alarm is triggered
when a link is present but later broken
because of radio interruption).
Unavailability No radio link. Sitespan will generate this alarm if the
modem failed to establish a link with the
independent ST (this alarm shall pair
with the Loss of Comms with ST)
BER > 10
-3
Radio link performance
parameter
This alarm is generated when the system
detects the radio link between the CT
and its independent ST has a BER less
than 10
-3
. Under this condition, the
unavailability seconds will be
incremented.
Loss of Frame
Alignment
Network Stability
Parameter
This alarm will be generated if the
network clock is outside the ITU
specification, or data stream is corrupted,
or faulty network interface card in the
local switch.
AIS Detected Network Parameter
monitoring the 2MB
performance
When the local exchange transmits all 1’s
in its time slots.
Transmission
System Clock
Failed
Network monitoring When the CT equipment cannot recover
the clock from the incoming data stream,
the system will switch over to its internal
reference clock and generate the
notification
2MB Signal
Loss
Network monitoring When the physical connection between
the TU and the local switch is broken.
ST PSU Tamper ST Equipment
monitoring
This indicates that the ST power supply
casing has been opened.
Switch over to
Battery
ST Equipment
monitoring
This indicates that the mains supply to
the ST has failed and the unit has
automatically switch to battery supplies.
Battery Low ST Equipment
monitoring
This indicates that the battery charge has
fallen to below 70% of its capacity.
Ringer Fail ST Equipment
monitoring
The ST ringer will be checked when an
incoming call is received.
Loss Comms
Alarm
CT Shelf Controller and
Sitespan communication
channel status
Sitespan will report a failure to establish
a communications link with the shelf
controller.