Testing Loopbacks - ADC HiGain HLU-200 List 2D User Manual

150-200-124-02, Issue 2
T L
ESTING OOPBACKS
To access the System Loopback screen:
1 Highlight the HRU-R box for loopbacks toward the customer (CLOC-CREM), or the CBA box for loopbacks
toward the network (NLOC-NREM)
2 Select Maintenance | Facilities | Operate Loopback Test from the Channel Bank.
3 Select Near End (NEND) or Far End (FEND) per
Figure 25 shows a loopback option box and
loopback mnemonics and Litecraft mnemonics.
HiGain Mnemonic
NLOC
CREM
NREM
CLOC
Litecraft Version 2.0 supports the HDSL loop up (Operate Loopback Test) but not the loopdown
(Release Loopback Test) command. This loopup command should only be issued with extra
caution. If issued, the only way to loop the circuit down is to issue the following TL1 loopdown
command: RLS-LPBK-T1.
HLU-200 List 2D
Table 9 on page
Table 9 on page 29
Figure 25. System Loopback Screen
Table 9. Loopback Mnemonics
Litecraft Equivalent
HTU (R) Network Loopback (NEND)
HTU (C) Customer Loopback (FEND)
HTU (R) Network Loopback (FEND)
HTU (C) Customer Loopback (NEND)
February 10, 1999
29.
shows the relationship between HiGain standard
Loopback Operation
29