DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures

9-652DS1-FAC (DS1 Facility)

9
Figure 9-28. DS1 Facility ConnectionsFigure 9-29. Typical CSU Maintenance Capabilities
DS1CONV
B
CPE CPE
CSU
ACSU
BA
DS1CONV
Network/DS1 Facility
Network Interface at CSU
Network Interface at Cross Connect Field
T
R
T1
R1
T
R
T1
R1
CPE Network/DS1 Facility
Cross
Connect
Field
DS1CONV
R1
T1
R
T
CSU
CPE Loopback
Switch
Self Test
Switch
Signal In
Signal In
DS1 Facility Side

CSU

CPE Side
LOS LED
DS1 Facility
Side LOS
LED
Signal Out
Signal Out
CPE Side