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Local loop back diagnosis test
Primary circuit
Framer IC ST path
(Analog)
Framer IC (Digital)
ASIC CODEC (PITS)
Local HW I/F point
Local TSW point
Local loop back diagnosis test of every Cards
Primary circuit
Framer IC ST path
(Analog)
Framer IC (Digital)
ASIC CODEC (PITS)
Local HW I/F point
Local TSW point
Diagnosis result of every test points
OK
NG
12.1.1.2. Card CT Bus Diagnosis
Diagnose CT bus by Loop back test to use CT bus
Object of Card
Diagnosis result
OK
NG
12.1.1.3. DTMF Receive Test
Diagnosis DTMF receiver
Primary circuit loop back test
IC Analog I/F loop back test
IC Digital I/F loop back test
PITS I/F test loop back
Local HW I/F loop back test
Local TSW loop back test
DHLC DLC SLC8/
MSLC
LSLC8
SLC16
X
X
X
X
loop back diagnosis OK
loop back diagnosis NG
DHLC DLC SLC8/
MSLC
LSLC8
SLC16
X
X
X
Card CT bus diagnosis OK
Card CT bus diagnosis NG
59
CS-
LCOT T1
INF
/
X
X
X
X
X
X
X
X
X
X
CS-
LCOT T1
INF
/
X
X
X
X
E1
BRI
PRI OPB3 E&M
X
X
X
X
X
X
X
X
X
X
X
X
X
X
E1
BRI
PRI OPB3 E&M
X
X
X
X
X
X
X
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