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2 61221002L2-5B
Table 1 lists and defines the H2TU-C Front Panel
LED indicators.
Each ADTRAN Litespan H2TU-C line card provides
a 1.552 kbps data transport over one unconditioned
CSA copper pair. These CSA loops can range up to 12
kft of 24-AWG twisted pair wire.
The Litespan H2TU-C can be used in Litespan 2000,
Litespan 2012, and Litespan ONU channel bank
assembly (CBA) systems containing Litespan system
software versions of 11.0.0 or higher. Each H2TU-C
works with the following multiple list versions of the
HDSL2 unit remote end (H2TU-R):
Part Number Description
1222024L6 T200 H2TU-R, Local Power
1223024L9 T200 H2TU-R, Local Power
1221026L6 T200 H2TU-R MON
1222026L6 T200 H2TU-R MON
1222026L9 T200 H2TU-R Q
1223026L9 T200 H2TU-R Q
122x024L7 T200 H2TU-R, Local Power
122x026L1 T200 H2TU-R
122x026L5 T200 H2TU-R B
122x026L7 T200 H2TU-R S
(where x = 1, 2 or 3)
The H2TU-C can be deployed in circuits consisting of
one H2TU-C and one H2TU-R. Lightning and power
cross-protection is provided at each twisted pair
interface of the ADTRAN H2TU-C line card. Local
power bus fusing is also used to protect the Litespan
channel bank backplane, Litespan bank power
supplies, and neighboring Litespan line cards in the
event of catastrophic line card failure.
The Litespan H2TU-C uses a DC-to-DC converter to
derive span powering voltage from the Litespan
–48 VDC switched battery supply.
Simplex current of 30 mA of current may be coupled
onto the HDSL2 loop span to power the H2TU-R (see
Figure 2).
NOTE
Depending on the type of H2TU-R used in the
circuit, different provisioning options will be
available.
Table 1. LED Indicators
DELnoitacidnInoitpircseD
TATS
ffO
neerG
neerGgnihsalF
deR
C-UT2HotrewopfossolsetacidnI
R-UT2HehthtiwcnysnisiC-UT2H;noitarepolamroN
R-UT2Hhtiwnoitazinorhcnys2LSDHgniriuqcA
erawmrifdaol/tratsotelbanu;noitacidnieruliaF
SOLH
ffO
deR
deRgnihsalF
deveihcalangis2LSDH
noitazinorhcnysfossol2LSDH
pool2LSDHnodetcetedtluafytiunitnocCD
SOLR
ffO
deR
R-UT2HtatneserpsiEPCehtmorflangis1SD
hctamtonseodgnimarFroR-UT2HtatnesbasiEPCehtmorflangis1SD
LSD
neerG
wolleY
deR
gnihsalF
)retaergroBd6(mumitposinigramRNS2LSDH
)Bd5otBd1(lanigramsinigramRNS2LSDH
)Bd0(roopsinigramRNS2LSDH
>sinoitaunettaeslup2LSDHBd03
CRCH
ffO
wolleY
deR
setunim03tsalehtnihtiwsrorreCRC2LSDHoN
setunim03tsalnisrorreCRC2LSDHeromroruoF
detcetedgnieberasrorreCRC2LSDH
KBL/MRA
ffO
neerG
wolleY
kcabpoolnirodemratonsitinuehT
kcabpoolnisitinuehT
kcabpoolnitontubdemrasitinuehT
SZ8B
neerG
ffO
SZ8BsiedocenilehT
IMAsiedocenilehT