AT&T MERLIN LEGEND Release 3.0 Installation Manual page 452

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