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100D Module Problems
DTE LOOPBACK
SEND CODE
UP/DN
FRAME
LOSS
LOW DENS
LOOPED
DIAGNOSTIC
INTERFACE
LOCAL
POWER
AOO
Eq
Eq SM SM
ESF T1 CSU
IN OUT MON MON IN OUT
1
ALARM
NEAR END LOOPED
BPV
CRC ERROR
FRAME LOSS
PULSES
CRITICAL POWER
FAR END LOOPED
Figure 4-9. ESF T1 CSU DTE Loopback Connection
AT&T
Paradyne
ACCULINK
F1
F2
F3
<
>
NET EQPT NET
IN IN NET
OK FAIL TEST SIG OOF ALRM EER SIG OOF ALRM PDV BPV
3150
OUT OUT EQPT
NETWORK
DTE
Figure 4-10. ACCULINK 3150 CSU Front Panel
4-74 Control Unit Problems