Avaya S8700 Maintenance Manual page 1310

Maintenance-Object Repair Procedures
PLB
NETWORK
Figure 8-23. High-Level Overview Of Loop-Back Points
8-588 Issue 1 May 2002
NETWORK ENVIRONMENT
CPE NET
DS1 CSU
LPBK SMRT
BRD MOD
JACK JACK
Local end
CSU module to CSU module
DS1 CSU
BOARD MOD
BLB ELB LLB RLB
Local end loop backs
CPE
SMRT LPBK
JACK JACK
Remote end loop backs (* CSU or External CSU)
NET CPE
NET-
CSU
SMRT LPBK
WORK
MOD
JACK JACK
Remote end
CPE
LPBK
JACK
CLJ-LB
CSU*
MOD
R-LLB
DS1
BRD
NETWORK
SMRT
JACK
DS1
BOARD
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