ADC HiGain HLU-200 User Manual page 31

150-200-114-03, Issue 03
Upstream
loopbacks
toward
Litespan
backplane
DSX-1
Figure 8. HLU-200 List 1D Doubler GNLB Loopback Configuration
HLU-200 List 1D
HLU-200 HDSL span
HLU-200 HDSL span
HLU-200 HDSL span
HDU
HLU-200 Span 1 2 -in-
NDU1
HLU-200
4-in-7 HDSL span
NLOC
HLU-200
AIS
6 -in- 7
HDSL span
CREM
AIS
HLU-200
HDSL span
HDU
AIS
HLU-200
Span 1
CDU1
Use the 3-in-5 code to loop down any of these loopbacks
* The SmartJack loopback is a metallic loopback in the HRU list 6,7, and 8.
It is a logic loopback in all HRU of lists 1-5.
** Set the SAIS option to ENA to send the AIS pattern to the CI during
SmartJack loopback.
November 22, 1996
HRU-412
AIS
LOGIC
TLOS
HRU-412
AIS
2-in-5
SMJK*
HRU-412
AIS**
3 -in- 7
NREM
HDU
6 3-in-6
Span 2 Span 3
NDU2
AIS
HRU-412
HRU-412
HRU-412
5 -in- 7
CLOC
HDU
4 in 6 Span 2 5-in-6 5-in-6 Span 3
CDU2
AIS
HRU-412
CI
Downstream
loopbacks
toward
customer
HRU-412
1151
29