Sectionalized Analysis Of The Ds1 Interface; Sectionalized Event Definitions - ADC H2TU-C-202 User Manual

LTPH-UM-1161-01
Sectionalized events isolate trouble to a particular circuit leg. For example, an ES listed under the NET-TX
column indicates that an errored second condition exists on the NET-TX circuit leg beginning with the time stamp
and continuing until an OK or other new event is recorded.
Sectionalized events use the status definitions described in
Transmission Leg Event Name
Leg 1 (NET-TX) Alarm
AIS
RAI
OOF
SES
ES
OK
Leg 2 (CPE-RX) Alarm
AIS
RAI
SES
ES
NOT SECT
OK
Leg 3 (CPE-TX) Alarm
AIS
RAI
OOF
SES
ES
OK
Leg 4 (NET-RX) Alarm
AIS-CI
RAI-CI
SES
ES
NOT SECT
OK
(a) An inferred failure or error condition displays in reverse video on the monitor.
H2TU-C-202 List 3F
Leg 1
Network Out (NET-TX)
Network
Leg 4
NET-RX
Figure 28. Sectionalized Analysis of the DS1 Interface
Table 19. Sectionalized Event Definitions
Event Description
HDSL2 LOSW or DS1 LOS received from the network
AIS received from the network
RAI received from the network
More than 2 seconds of OOF received
BPV ≥ 1544, CRC (ESF) ≥ 320, or FE (SF) ≥ 8
BPV, SEF, CRC (ESF), or FE (SF)
Leg 1 is clear
(a)
Inferred alarm because RAI is received from the CPE at leg 3 and leg 1 is clear
Reported only when remote actively sends out AIS to CPE
Leg 1 is in RAI state
(a)
Inferred SES. PRM received from CPE has G6 or SE bit set.
(a)
Inferred ES. PRM received from CPE has any of G1 through G5 set, LV, or FE set.
Cannot be sectionalized; no PRM received from the CPE.
PRM received from CPE has no errors.
LOS received from CPE
AIS received from CPE
RAI received from CPE
More than 2 seconds of OOF received
BPV + EXZ ≥ 1544 of F (ESF) ≥ 320 or FE (SF) ≥ 8
BPV, SEF, CRC (ESF), or FE (SF)
Leg 3 is clear
(a)
Inferred alarm because RAI is received from the network at leg 1 and leg 3 is clear
Remote actively sends out AIS-CO to the network due to an LOS or AIS at leg 3
Remote actively sends out RAI-CI due to leg 3 RAI and leg 1 is clear
(a)
Inferred SES. PRM received from CPE has G6 or SE bit set.
(a)
Inferred ES. PRM received from CPE has any of G1 through G5 set, LV, or FE set.
Cannot be sectionalized; no PRM received from the CPE.
PRM received from CPE has no errors.
June 28, 2002
Figure 27 on page 44
Leg 2
CPE-RX
H2TU-R
Customer Interface
Leg 3
Network In (CPE-TX)
Monitoring System Activity and Performance
and in Table 19 on this page.
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