Alarm History At The Hdsl2 Interface - ADC HiGain H2TU-C-202 User Manual

Monitoring System Activity and Performance
Message on Screen Description
TX RAI-CI Transmit RAI-CI - Remote Alarm Indication at the H2TU-R—Upon reception of an RAI (yellow) from the
CPE, the H2TU-R sends an RAI-CI toward the network if the network signal received at the H2TU-R is clear.
If the network signal is impaired (LOS, AIS, or LOF), then the RAI is passed on to the network unaltered.
This is applicable to SF or ESF framing. In an all SF environment, RACI must be enabled to convert SF-RAI
to SF-RAI-CI.
PRM-NE Performance Report Monitoring - Near End—The count of the PRM-NE register at the H2TU-R exceeds
the 10
PRM-FE Performance Report Monitoring - Far End—The count of the PRM-FE register at the H2TU-R exceeds the
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10
DBER Bit Error Rate—The DS1 BER has exceeded the built-in 24-hour threshold limits of approximately 10
LOF Loss of Frame—Indicates the incoming DS1 payload does not contain the specific frame pattern, ESF or
SF, selected by the FRMG option. Only occurs if the FRMG option is set to SF or ESF.
(a) AIS-CI is a modified AIS alarm pattern. Equipment not suited to detect AIS-CI still detects this signal as an AIS. AIS-CI is sent
toward the network indicating that an LOS (RLOS) or AIS (RAIS) has been received from the CPE.

Alarm History at the HDSL2 Interface

The HDSL2 Alarm History screens report alarms at the H2TU-C and the H2TU-R.
HDSL2 alarm history.
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Table 18. DS1 Alarm Descriptions (Continued)
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BER threshold at 648 events since 12:00:00 AM.
BER threshold at 648 events since 12:00:00 AM.
Table 19 describes the alarms that are reported at the H2TU-C or H2TU-R.
Figure 24. H2TU-C HDSL2 Alarm History Screen
June 6, 2003
LTPH-UM-1208-01
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Figure 24 shows the H2TU-C
H2TU-C-202 List 7G
.