ADC HiGain HRU-402 User Manual page 21

150-402-100-03
The HRU-402 supports four types of loopbacks (see
HLU HLU HLU HLU
HLU HLU HLU HLU
HLU HLU HLU HLU
SPAN 1
SPAN 4
HLU
110000
NLOC
All 1s
1111000 HLU HLU HLU 4 in 7
HLU
CREM
All 1s
6 in 7 1111110
HLU HLU HLU
HLU
HLU HLU HLU HLU HLU HLU HLU HLU HLU HLU HLU HLU HLU HLU HLU HLU
All 1s
HLU HLU HLU HLU
All 1s SPAN 1
* Set the SAIS option to ENA to send the AIS pattern to the CI during SmartJack loopback NREM and TLOS.
Use the 3-in-5 code to loop down any loopback.
Figure 5. HiGain System Generic Loopbacks (GNLB)
•
Network Remote (NREM): the DSX signal is looped back to the DSX at
the HRU.
•
SmartJack (SMJK): loopback at the HRU towards the network initiated
by a 2-in-5 in-band loopback code or out of band ESF facility data link
(FDL) code.
HRU-402 List 1 and List 3
Loopbacks Toward Network
HDSL SPAN
HDSL SPAN
HDSL SPAN
NDU1 1 U D C 1 NDU2 U D C
6 n 4 i SPAN 2 6 n 4 i
2 in 6
3 in 6
0 0 1 1 1 1 111000 0 0 1 1 1 1
HDU HDU
9 0 4 U - D H 9 0 4 U - D H
Loopbacks Toward Customer
HDSL SPAN
HDSL SPAN
HDSL SPAN
CDU1
CDU2
4 in 6 5 in 6
SPAN 2
111100 111110
HDU HDU
November 5, 1998
1 NDU3 U D C
SPAN 3 SPAN 4
1010001 1010010
0
HDU
9 0 4 U - D H 9
CDU3
1011001 SPAN 4
SPAN 3
HDU
Product Overview
Figure 5).
TLOS
HRU-412 HRU-412
LOGIC HRU-412
HRU
SMJK*
HRU-412 HRU-412
2 in 5
11000 HRU-412
HRU
NREM* NREM
HRU-412 HRU-412 HRU-412 HRU-412
3 in 7 3 in 7
1110000 1110000 HRU-412 HRU-412
HRU-412
HRU
1 U D C
NDU4
6 n 4 i
HRU
SPAN 5
0 1 1 1 1
HDU
0 4 U - D H
CLOC
HRU-412 HRU-412
HRU 5 IN 7
HRU-412
HRU
CLOC CLOC CLOC CLOC
HRU-412 HRU-412 HRU-412 HRU-412
5 in 7 5 IN 7 5 IN 7 5 IN 7
111110
HRU-412 HRU-412 HRU-412 HRU
CDU4
1011010
SPAN 5
HRU
HDU
All 1s
All 1s
All 1s
All 1s
All 1s
All 1s
All 1s
All 1s
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