ADTRAN T200 IDSL OCU-R, Installation And Maintenance Manual

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5 61220010L2-5, Issue 3 61220010L2-5C
LED Indication
The IDSL OCU-R front panel LEDs display the
operating status. The LEDs are described in
Table 5 .
4. TESTING
Loopback Testing
Loopback tests can be performed from the Central
Office (CO) to verify proper loop and IDSL OCU-R
operation. The IDSL OCU-R provides a network
loopback in response to an OCU latching or non-
latching loopback command. The IDSL OCU-R also
provides a sealing current reversal when the CSU
loopback command is detected. Alternating
loopbacks may be performed at all rates, except 64
kbps Clear Channel. See
Table 6 for alternating
loopback sequences. See
Table 7
for latching loopback
sequences.
Table 7. Latching Loopback Sequences
e c n e u q e S
n o i t c n u F n o i t c n u F n o i t c n u F n o i t c n u F n o i t c n u F
e d o C e t y B
f o r e b m u N
d e v i e c e R d e v i e c e R
d e v i e c e R
d e v i e c e R d e v i e c e R
s e t y B s e t y B
s e t y B
s e t y B s e t y B
g n i t s i x e r a e l C
s k c a b p o o l
o t e c i v e d y f i t n e d I
d e p o o l e b
; p o o l o t e r a p e r P
e d o c P A M d n e s
s e t y b 0 3 r e t f a
e t a v i t c A
k c a b p o o l
n i n o i t i s n a r T
) P I T ( s s e r g o r p
0 1 0 1 1 1 0 X
t c e l e s k c a b p o o L
) C S L ( e d o c
0 S D - 1 0 1 0 0 0 0 X
U C O - 1 0 1 0 1 0 1 X
U S C - 1 0 0 0 1 1 0 X
d e l b a n e k c a b p o o L
) E B L (
0 1 1 0 1 0 1 X
e c i o v d n E - r a F
) V E F (
0 1 0 1 1 0 1 X
f o m u m i n i M
s e t y b P I T 5 3
f o m u m i n i M
s e t y b C S L 5 3
f o m u m i n i M
s e t y b E B L 0 0 1
f o m u m i n i M
s e t y b V E F 2 3
d e h s i l b a t s e e l b a s i d o t d e r i u q e r s e t y b P I T 5 3 f o m u m i n i M
. k c a b p o o l g n i h c t a l
t i b e r a C t' n o D = X
Table 6. Alternating Loopback Sequences
e c n e u q e S
n o i t c n u F n o i t c n u F n o i t c n u F n o i t c n u F n o i t c n u F
s e t y B d e v i e c e R
k c a b p o o l e t a v i t c A
d n a k c a b p o o l n i a t n i a M
s r o r r e t i b r o f t s e t
k c a b p o o l r a e l C
f o s e t y b e v i t u c e s n o c r u o F
e d o c k c a b p o o l d e i f i c e p s
U C O - 0 1 0 1 0 1 0 X
U S C - 0 0 0 1 0 1 0 X
U S D - 0 0 1 1 0 1 0 X
h t i w g n i t a n r e t l a e t y b a t a D
e d o c k c a b p o o l
: e l p m a x e
0 1 0 1 0 1 0 X / 1 D D D D D D X
s e t y b a t a d e v i t u c e s n o c r u o F
e d o c k c a b p o o l U S C t u o h t i w
t i b e r a c t' n o D = X
D E L r o l o C n o i t p i r c s e D
C N Y S D E R
N E E R G
. c n y s k r o w t e n o n s i e r e h t t a h t s e t a c i d n I
. n o i t a z i n o r h c n y s k r o w t e n s e t a c i d n I
C R C D E R . s r o r r e C R C e r a e r e h t t a h t s e t a c i d n i N O
. s r o r r e C R C o n s e t a c i d n i F F O
U S D O N W O L L E Y g n i l a e s o n ,l a n g i s o n s e t a c i d n i N O
. g n i m a r f C S o n ,t n e r r u c
d n a ,t n e r r u c g n i l a e s ,l a n g i s s e t a c i d n i F F O
. d e v e i h c a g n i m a r f C S
P A N E E R G n e e b s a h t i n u e h t t a h t s e t a c i d n i N O
. d e n o i s i v o r p y l e t o m e r
k n i l l o r t n o c e t o m e r s e t a c i d n i G N I H S A L F
. e v i t c a
d e n o i s i v o r p y l l a c o l s e t a c i d n i F F O
. n o i t a r e p o
K B L K W T N W O L L E Y e h t s d r a w o t k c a b p o o l a s e t a c i d n i N O
S D D s ' T R t a d e k o v n i s i k r o w t e n
t s e T o t e s n o p s e r n i e c a f r e t n i r e m o t s u C
. k c a b p o o l U C O g n i u s s i r e t n e C
d r a w o t k c a b p o o l s e t a c i d n i G N I H S A L F
a i v U S D / U S C t a d e k o v n i s i k r o w t e n
d n a , k c a b p o o l U S C d e d n a m m o c k r o w t e n
t n e r r u c g n i l a e s g n i s r e v e r f o e s n o p s e r s ' T R
. U S D / U S C o t
K B L T S U C W O L L E Y e h t s d r a w o t k c a b p o o l a s e t a c i d n i N O
R - U C O L S D I t a d e k o v n i s i r e m o t s u c
. n o t t u b K B L l e n a p t n o r f a i v e c a f r e t n i
s d r a w o t k c a b p o o l a s e t a c i d n i G N I H S A L F
N A R T D A e h t t a d e k o v n i s i r e m o t s u c e h t
l e n a p t n o r f R - U C O L S D I a i v E T 1 R B - U
. n o t t u b K B L
Table 5. LED Indication
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