V
E
R
IF
IC
A
T
IO
N
On
c
e th
e
H2T
U
-R
is
in
sta
lle
d,
v
erify th
at
it
is
o
p
er
atin
g p
rop
e
rly
by
m
o
ni
tori
ng
th
e Sta
tu
s
LE
D
s on
th
e f
ro
nt
pa
ne
l.
L
O
GGING
ON
TO
THE
M
AI
N
M
EN
U
Th
e H2
TU-R su
p
p
o
rts l
o
cal an
d
remo
te
lo
g
o
n
th
ro
u
g
h
a
m
ain
ten
an
ce termin
a
l (ASCII
te
rm
in
a
l or
a PC r
u
n
n
in
g
te
rm
in
al
e
m
ul
a
tio
n
sof
twa
re
)
c
o
nn
ec
te
d
to
th
e c
ra
ft p
o
rt
on
th
e
H2
TU-R fro
n
t p
an
el.
L
ogg
in
g
o
n
creat
es
m
enu
s a
n
d
sc
re
ens
fo
r t
h
e
H2
T
U
-R t
h
a
t are
rep
lic
at
io
n
s o
f t
h
ose
vi
ew
ed
at
t
h
e H2
TU-C. On
ce
log
g
e
d
o
n
,
yo
u
c
an
v
ie
w
syste
m
se
ttin
gs a
n
d i
n
v
e
n
to
ry,
in
itia
te
loop
ba
cks,
mo
ni
to
r pe
rf
o
rman
ce,
and
con
figure
th
e ci
rcui
t.
To
lo
g
on
u
sing
a
m
ainte
n
anc
e te
rm
ina
l:
1
P
res
s
+
t
o
r
e
fr
es
h
th
e L
o
go
n
sc
re
en
, i
f n
ece
ss
a
ry
.
2
Pr
e
ss th
e
fi
rst le
tte
r of th
e de
sire
d m
enu
. Use
the
to
c
y
cl
e thro
ug
h m
enu
se
le
c
tion
s, a
n
d p
re
ss
to
c
h
an
g
e a
se
ttin
g
or t
o
d
isp
la
y
a
m
enu
.
L
OOP
BACK
T
ES
TI
NG
In
itia
te
lo
op
b
a
ck
te
stin
g fr
om
th
e m
a
in
te
n
a
n
ce
m
en
u
s, H
2
TU-R
fron
t-p
a
n
el
p
u
sh
bu
tto
n,
H2T
U
-C
f
ro
nt
-p
an
el
p
u
sh
but
to
ns,
or
w
ith
i
nba
nd
cod
es se
nt
b
y
a t
es
t set
(
see
ta
bl
e b
el
o
w)
.
Fo
r m
o
re
info
rm
ation
a
b
ou
t lo
op
b
a
ck
te
stin
g,
re
fe
r
to
th
e H2
TU-C l
in
e u
n
it u
ser
m
an
u
al.
S
tat
us
L
E
D
D
escr
ipt
ions
L
E
D
/S
ta
tu
s
Fu
nc
tion
ALM
So
lid
r
ed
R
em
o
te
L
o
ss
of
D
S
1
Si
gna
l (
R
L
O
S)
p
res
en
t a
t t
h
e
H
2TU
-R
.
Flas
hi
ng
r
ed
on
ce
p
er
s
ec
o
n
d
Lo
ca
l L
o
ss
of
D
S
1 Si
gna
l (LLO
S) pre
sen
t at
th
e H2
TU
-C.
Loo
p
OF
F
N
o
ac
ti
vity
o
n
th
e HD
S
L
2
lo
o
p
.
So
lid gr
ee
n
N
o
rm
al op
er
at
io
n:
t
h
e
HD
SL2
s
p
an
is
sy
nc
hro
n
iz
ed
.
Fl
as
h
ing gre
en
o
n
ce
pe
r se
co
nd
H
D
S
L2
loop
s
yn
ch
roni
za
tion
a
tte
m
p
t.
Flas
hi
ng
g
ree
n 4 t
im
es pe
r se
co
nd
H
D
S
L2 m
arg
in
al
ar
m
o
r l
o
o
p
at
te
nu
at
ion al
ar
m
p
re
se
n
t a
t th
e H
2TU
-R
.
Flas
h
ing
g
ree
n 1
0
ti
me
s pe
r se
co
nd
s
HD
S
L
2
C
R
C
er
ro
r pr
es
en
t at
th
e
H2
T
U
-R
.
ESF
OF
F
U
n
fr
am
ed
D
S
1 pre
se
n
t a
t t
h
e H
2TU
-R
or no
D
S
1 de
te
ct
ed
at
th
e
H
2TU
-R
.
So
lid gr
ee
n
ESF
f
ra
m
ing pre
se
nt
on t
h
e i
n
co
m
ing D
S
1 si
gn
al
.
Fl
as
h
ing gre
en
o
n
ce
pe
r se
co
nd
ESF
f
ra
m
in
g a
n
d
f
ram
e e
rro
r/
CR
C
pre
se
n
t on
t
h
e i
n
co
m
ing
DS
1 s
igna
l.
SF
OF
F
U
n
fr
am
ed
D
S
1 pre
se
n
t a
t t
h
e H
2TU
-R
or no
D
S
1 de
te
ct
ed
at
th
e
H
2TU
-R
.
So
lid gr
ee
n
S
F
fr
ami
n
g
p
res
en
t
on
t
h
e i
n
co
mi
ng
D
S
1
si
g
n
al.
Fl
as
h
ing gre
en
o
n
ce
pe
r se
co
nd
SF
fr
am
in
g and
fr
am
e er
ror pre
se
n
t on t
h
e i
n
co
m
ing D
S
1 si
gn
al
.
B8ZS
OF
F
H
D
S
L2 sp
an
is
n
o
t s
yn
ch
roni
ze
d (no D
S
1 si
g
n
al
de
te
ct
ed
).
So
lid gr
ee
n
B
8
ZS
i
s pr
o
vis
io
ne
d or
i
s de
te
ct
ed
wh
en
set
to
A
U
T
O
.
Fl
as
h
ing gre
en
o
n
ce
pe
r se
co
nd
B
8
ZS
an
d st
ri
ng
o
f ex
ce
ss z
er
o
s
d
etec
te
d
o
n
th
e i
n
co
m
in
g
DS
-1
si
g
n
al.
AM
I
OF
F
H
D
S
L2 sp
an
is
n
o
t s
yn
ch
roni
ze
d (no D
S
1 si
g
n
al
de
te
ct
ed
).
So
lid gr
ee
n
AM
I i
s
pr
ov
is
ione
d or de
te
ct
ed
wh
en s
et
to
AU
TO
.
Fl
as
h
ing gre
en
o
n
ce
pe
r se
co
nd
AM
I a
nd BPV de
te
ct
ed
on t
h
e inc
o
m
ing D
S
-1.
LBK
So
lid
y
ello
w
Lo
opb
ac
k i
n
H
2TU
-R
to
w
ar
d
s ne
tw
ork
(N
RE
M
, SM
JK,
or TLO
S).
Flas
hi
ng
y
ell
o
w
o
n
ce
pe
r
se
co
nd
Lo
opb
ac
k i
n
H
2TU
-R
to
w
ar
d
s c
u
st
om
er
.
Fl
as
h
ing ye
llo
w 4 ti
m
es pe
r se
co
nd
Sy
st
em
AR
M
ed f
o
r l
oopb
ac
k.
M
onitor
P
erformance
E
vent
Log
C
onfig
I
nventory
Rep
o
rt
R
l
ogon
H
elp
+-------------------------
-----------------------+
||
|
ADC
DS
L
Systems,
Inc.
|
|
HiGain
HDSL2
|
||
|
Voice:
800.3
66.3891
ext
73223
|
|
Fax
:
714.7
30.2400
|
||
+-----------------------------------------
-------+
ID:
xxxx--xxxx--xxxx--xxxx
01/24/2003
06:
38:12
H2TU-C
System:
OK
Ty
pe t
he f
irs
t l
e
tter
To v
iew
:
on
itor
A
g
ra
phi
ca
l rep
res
en
ta
tio
n
of
c
ircu
it ac
tiv
ity
a
nd de
vic
es.
er
fo
rm
an
ce
Per
for
m
anc
e
hi
st
o
ry s
ta
tis
tic
s (c
urre
nt
, 25
-ho
u
r,
4
8
-ho
u
r,
31-d
ay
, a
nd bl
o
ck
ag
e
indi
ca
to
r) a
t DS
1 and
H
D
S
L i
n
te
rf
ac
es
. Al
so
, d
ispl
ays
al
ar
m
s
ta
tus a
nd c
oun
t.
ve
nt
l
o
g
Sec
tio
nal
iz
ed
Ev
ent
Hi
st
o
ry f
o
r al
ar
m
s a
nd e
rror
s at
al
l f
o
u
r l
egs
of
t
h
e D
S
1 s
ig
n
al
at
th
e H
2TU
-R
.
on
fig
Conf
igur
at
io
n opt
ions
(st
an
d
ar
d,
ADC,
si
gn
al
ge
ner
at
ion,
dat
e
and t
im
e,
ma
st
er
c
lea
r, f
ac
to
ry d
ef
au
lts
).
nv
en
to
ry
Prod
uc
t i
n
fo
rm
at
ion,
ci
rc
ui
t a
nd uni
t i
d
ent
ifi
ca
tions
.
lo
go
n
M
ain
te
n
an
ce
te
rm
in
al
sc
re
en
s at
the
H2
TU
-C
.
el
p
Gl
o
ss
ar
y,
s
cree
n
na
vi
g
at
io
n
ke
ys
, A
D
C
co
nt
ac
t i
n
fo
rm
at
ion.
Re
p
rt
Do
wn
lo
ad
in
g st
at
us
a
n
d
p
erf
orm
anc
e m
oni
to
ri
ng
d
at
a t
o
f
ile
.
For mo
re in
format
ion a
bout
the
HDSL
2
lin
e u
n
it m
a
inte
nan
ce
s
c
re
e
ns
, re
fe
r to
the
H2
TU-C line
unit
us
e
r m
a
nu
a
l. Co
pie
s
of ADC lin
e
unit u
s
e
r m
a
nu
a
ls
c
a
n
be
downloa
de
d
from
the
ADC we
b
s
ite
a
t
ww
w
.adc
.co
m. T
o
or
de
r a h
a
rd
c
opy,
ple
ase
con
tact
your
s
a
le
s
re
pr
es
enta
tive
.
L
o
o
pba
ck Co
m
m
a
nds
Loo
pba
ck
In
b
and
Co
de
De
sc
ri
pt
io
n
NL
OC
1111
000
DSX-
1 si
gn
al
i
s l
o
ope
d ba
ck
t
o
th
e
n
et
w
or
k at
t
h
e H2
TU
-C.
NR
EM
1110
000
DSX-
1 si
gn
al
i
s l
o
ope
d ba
ck
t
o
th
e
n
et
w
or
k at
t
h
e H2
TU
-R
.
SM
JK
1100
0
DS
X
-1 si
g
n
al
is
lo
o
p
ed
ba
ck
to
the
ne
tw
ork
at
th
e H
2TU
-R
S
m
ar
tJ
ac
k m
o
d
u
le
.
CR
E
M
1111
110
DS1
s
igna
l f
rom
c
u
st
om
er
i
s l
o
ope
d ba
ck
t
o
t
h
e
cu
st
o
m
er
at
t
h
e H2
TU
-C.
CLO
C
1111
100
DS1
s
igna
l f
rom
c
u
st
om
er
i
s l
o
ope
d ba
ck
t
o
t
h
e
cu
st
o
m
er
at
t
h
e H2
TU
-R
.
Loo
pdo
wn
1110
0
D
eac
ti
vat
es
an
y o
f t
h
e a
b
o
ve l
o
o
p
b
ac
ks
.
CT
R
L
R
SP
AC
EBAR
ENT
E
R
M
P
E
C
I
R
H
O
Netw
o
rk
H2TU-C
H2TU-R
TLOS*
NLOC
CREM
CLOC
NREM
SMJK
*
When enab
led,
TLOS is an automatic loopbac
k
that occurs with an LOS at the remote DS1 input.
T
o
w
a
rd Customer
T
owa
rd
N
e
tw
o
rk
Customer
Premises
DS1
DSX-1
H0025-B
HDSL2
ALM
L
ESF
SF
LOOP
B8ZS
AMI
LBK
H
2
T
U
*
R
4
0
2
D
S
1
IN
BRG
OUT
RS-232
DCE
Alarm LED
Loopbac
k LED
CLEI/ECI bar code label
Configuration n
umber label
Loopbac
k contr
ol pushb
utton
Extraction handle
DS1 transmit (IN) and receive (OUT)
bridging jac
ks
Loop LED
DS1 framing LEDs
DS1 line code LEDs
Craft por
t pr
o
v
isioning
T
o
access all system maintenance
, pro
visioning
and perf
o
rm
ance screens
, connect a standard
9-pin ter
m
inal cab
le betw
een the ser
ial por
t on a
PC and the H2TU-R cr
aft por
t.
Press the pushb
utton f
or 5 seconds to activ
ate a loopbac
k
to
w
ards the customer at the Centr
al Office (CREM).
The unit can be looped do
wn b
y
pressing the
LPBK control pushb
utton again f
or 5 seconds
, b
y
the standard
loopdo
wn inband messages
, or b
y
the maintenance ter
minal.
An
y e
xisting loopbac
k is ter
minated bef
ore these loopbac
ks
are activ
ated.
Use to remo
v
e the H2TU-R-402 from
its slot.
F
o
r non-intr
usiv
e test access
.
(Inside handle)
9600 baud
8 data bits
No par
ity
1 stop bit
Hardw
are flo
w control:
OFF
T
e
rm
inal em
ulation:
VT100
Maintenance
T
e
rminal Modem Settings
List n
umber
27
25
23
21
19
17
15
13
11
9
7
3
5
1
Tip
Ring
F
actor
y
use
only
F
actor
y
use
only
F
actor
y
use
only
Ring
1
Circuit
g
round
Ring
DS1
IN
Tip
Tip
1
Chassis
g
round*
Chassis
g
round*
28
26
24
22
20
18
16
14
12
10
8
4
6
2
55
53
51
49
47
45
43
41
39
37
35
32
31
56
54
52
50
48
46
44
42
40
38
36
34
30
33
29
Activ
e pins are highlighted in b
lac
k.
* Chassis g
round m
ust be tied to Ear
th g
round or netw
or
k
g
round
according to local pr
actice
.
HDSL2
Span
DS1
OUT
−
48V
HiGain
HDSL2
A
utomatic
protection
s
witch
po
w
e
r
A
utomatic
protection
s
witch
control
H0051-B
