Alarm Option For The Digital Loop Carrier Feed; Remote Los And Ais Response - ADC HiGain H2TU-C-202 User Manual

LTPH-UM-1208-01

Alarm Option for the Digital Loop Carrier Feed

To improve HDSL2 compatibility with the switch-to-protect features used in Digital Loop Carrier (DLC) feeder
applications, the H2TU-C has an Alarm Pattern (ALMP) option that allows either AIS or LOS DS1 output payload
selection for the following alarms:
•
LOSW on any loop
•
LOS DS1

Remote LOS and AIS Response

Figure 27 shows the different ways the HDSL2 can respond to the network, depending on the configuration of the
TLOS, NLBP, FT1, ALMP, and NAIS configuration options described in
page 16.
Remove alarm
pattern
ADC Option
Standard Option
Default configurations
are in bold.
H2TU-C-202 List 7G
H2TU-R, DS1 Input
YES
LOS event?
NO
[DIS]
NO YES
AIS event?
[DIS]
[AIS]
Figure 27. H2TU-R LOS and AIS Response Priorities
Table 6 on page 15
[ENA]
TLOS
NLBP
[AIS]
[ENA]
FT1
[LOS]
ALMP
[AIS]
NAIS
[CI]
June 6, 2003
and Table 7 on
Loopback to Network
[LOS]
LOS to CPE
AIS to CPE
FT1 idle to NET & CPE
Pass on LOS to NET
Send AIS to NET
Send AIS-CI to NET
Testing
H0029-A
41