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LTPH-UM-1049-02, Issue 2 Monitoring System Activity and Performance
H2TU-C-319 List 4E January 9, 2002 45
Figure 26. H2TU-R DS1 Alarm History Screen
Table 17. DS1 Alarm Descriptions
Screen Alarm Front-Panel Alarm Description
H2TU-C DSI Alarms (see Figure 25 on page 44)
SPTE Split Equipment A test mode initiated by the HMU which splits the AUX port’s DSX-1 payload and sends it to the
MUX port.
SPTF Split Facilities A test mode initiated by the HMU which splits the AUX facility DS payload from the AUX port
#1 and sends it to the MUX port.
LLOS
(a)
LLOS Local Loss of Signal—Loss of the H2TU-C DSX-1 input signal.
LAIS LAIS Line Alarm Indication Signal—Indicates an AIS (all ones) pattern is being detected at the
H2TU-C DS1 input port. The ALMP option determines whether AIS (default) or LOS is sent
towards the CPE.
DBER xxx-DBER Bit Error Rate—The DS1 BER has exceeded the built-in 24-hour threshold limits of
approximately 10
-6
. (xxx denotes either TUC or TUR.)
H2TU-R DS1 Alarms (see Figure 26 above)
RLOS
(a)
RLOS Remote Loss of Signal— Loss of the H2TU-R DS1 input signal.
RAIS RAIS Remote Alarm Indication Signal—AIS is being detected at the H2TU-R DS1 input port. By
default (see Figure 30 on page 54) AIS-CI
(b)
is sent toward the network.
RAI RRAI Remote Alarm Indication—Indicates an RAI alarm (yellow) from the CPE with errors from the
line unit or network.
TX RAI-CI TRCI Transmit RAI-CI - Remote Alarm Indication at the H2TU-R—Upon reception of an RAI (yellow
LED) from the CPE, the H2TU-R sends an RAI-CI towards 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 PRMN Performance Report Monitoring - Near End—The count of the PRM-NE register at the H2TU-R
exceeds the 10
-6
BER threshold at 648 events since 12:00:00 AM.
PRM-FE PRMF Performance Report Monitoring - Far End—The count of the PRM-FE register at the H2TU-R
exceeds the 10
-6
BER threshold at 648 events since 12:00:00 AM.
Continued
Monitor Performance Event Log Config Inventory Report Rlogon Help
H2TU-R DS-1 Alarm History
-----------------------------------------------------------------------------
Alarm First Last Status Count
RLOS OK 0
RAIS OK 0
RAI OK 0
TX RAI-CI OK 0
PRM-NE OK 0
PRM-FE OK 0
DBER 08/16/01 00:37 08/16/01 00:45 OK 7
Press: C(l)ear Alarm History
------------------------------------------------------------------------------
Use <Space> to cycle through Interface : H2TU-R DS-1
choices and <Enter> to view Statistics : Alarm History
ID: xxxx--xxxx--xxxx--xxxx 08/01/2001 07:05:33 H2TU-C System: Alarm