DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-1171UDS1-BD (UDS1 Interface Circuit Pack)
3
Figure 3-47. High Level Overview Of Loopback Points
The following list of acronym definitions are for the Figure 3-47
:
■ PLB = Payload Loopback
■ BLB = Board Loopback
■ ELB = Equipment Loopback
■ LLB = Line Loopback
■ RLB = Repeater Loopback
■ CLJ = Loopback Jack Loopback
■ R-LLB = Remote Line Loopback
■ SMRT = Smart Jack
■ LPBK = Loopback
CPE
LPBK
JACK
NET
SMRT
JACK
CSU
MOD
NET
SMRT
JACK
CPE
LPBK
JACK
DS1
BRD
CSU
MOD
DS1
BRD
NET-
WORK
CSU module to CSU module
Remote end
NETWORK ENVIRONMENT
Local end
NETWORK
SMRT
JACK
BLB
R-LLB
CPE
LPBK
JACK
DS1
BOARD
Remote end loop backs (* CSU or External CSU)
NETWORK
SMRT
JACK
CSU*
MOD
CSU
MOD
CLJ-LB LLB RLB ELB
PLB
CPE
LPBK
JACK
DS1
BOARD
Local end loop backs