Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 196

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Control Unit Problems
100D Module Problems
Office Repeater
.18A
+ Line
-Line
Figure 4-8. 551 T1 CSU Loopback Connection
DTE LOOPBACK
DIAGNOSTIC
INTERFACE
LOCAL
POWER
Figure 4-9. ESF T1 CSU DTE Loopback Connection
-V
+
Line XMT XMT RCV XMT RCV
.18A
In Out Mon Out In Mon
SEND CODE
UP
FRAME
LOSS
LOW DENS
LOOPED
Reg
-1 Signal Monitor Unit
EQ EQ EQ SM SM
In OUT Mon IN Out
UP/DN
ALARM
NEAR END LOOPED
BPV
CRC ERROR
FRAME LOSS
PULSES
CRITICAL POWER
FAR END LOOPED
Page 4-106
551 T1 Channel Service Unit
Avg Line
Dens Zeros Pwr Looped BPV Pulse
SM
Equipment Central Line
Mon Signal Signal
ESF T1 CSU
AOO
Eq Eq SM SM
IN OUT MON MON IN OUT
-1 +1
Issue 1
June 1997