Esf/ Sf (Yel) (Grn); B8Zs/ Ami (Yel) (Grn); Llb / Rlb (Yel) (Grn); Front Panel Led Indicators - ADTRAN T200 H4TU-R Installation And Maintenance Practice

Front Panel LED Indicators

There are seven front panel mounted status LED
indicators. Each indicator is described in
Front Panel Name
DSL 1
1223424L2
LOCAL
DSL 1
DSL 2
DSL 2
DS1
ALM
DS1
ESF/ SF
(YEL) (GRN)
B8ZS/
AMI
(YEL) (GRN)
LLB / RLB
(YEL) (GRN)
ALM
LOC
LBK
REM
ESF/SF
TX
TX
M
O
N
RX
RX
B8ZS/AMI
R
S
2
3
2
LLB/RLB
61223424L2-5A
Table 4.
Table 4. Front Panel LED Indicators
Indication Description
Green DSL Loop 1 sync, no errors currently detected, and signal margin ≥3dB
Red No DSL Loop 1 sync, errors being detected, or signal margin <3dB
Green DSL Loop 2 sync, no errors currently detected, and signal margin ≥3dB
Red No DSL Loop 2 sync, errors being detected, or signal margin <3dB
Green DS1 signal is present and no errors currently being detected
Red No DS1 signal or signal is present with errors
OFF No active alarm present
Red Loss of DS1 signal to the unit
Yellow Loss of DSX-1 signal to the H4TU-C
OFF Unit is provisioned for UNFRAMED data
Yellow Unit is provisioned for ESF data
Green Unit is provisioned for SF data
Yellow Unit is provisioned for B8ZS coded data
Green Unit is provisioned for AMI data
OFF Unit is NOT in loopback
Yellow Unit is in loopback (network and/or customer)
Green H4TU-C is in loopback toward this unit
Issue 1, December 2003 3