ADC H4TU-C-231-L5A User Manual page 53

LTPH-UM-1253-01
Table 17. Summary of HDSL4 Generic Loopback Codes and Activation Methods
Loopback Code
NLOC 1111000
4-in-7
NREM 1110000
3-in-7
NDU1 110000
2-in-6
CDU1 111100
4-in-6
NDU2 111000
3-in-6
CDU2 111110
5-in-6
CLOC 1111100
5-in-7
CREM 1111110
6-in-7
SMJK LpUp 11000
(a)
(PL) 2-in-5
SMJK LpUp 1111-1111-
0100-1000
(a)
(ESF-DL)
SMJK LpDn 11100
(PL) 3-in-5
SMJK LpDn 1111-1111-
0010-0100
(ESF-DL)
(a)
SMJK LpUp 100000
(1-in-6)
SMJK LpDn 100
(1-in-3)
(a) This loopback command is valid only when the SmartJack Loopback option (LPBK) is ENABLED.
H4TU-C-231 List 5AA
Description
DSX-1 signal is looped back to the network at
the H4TU-C.
DSX-1 signal is looped back to the network at
the H4TU-R.
Signal is looped back to the network at H4D1.
DS1 signal from customer is looped back to the
customer at H4D1.
Signal is looped back to the network at H4D2.
DS1 signal from customer is looped back tot he
customer at H4D2.
DS1 signal from the customer is looped back to
the customer at the H4TU-R.
DS1 signal from the customer is looped back to
the customer at the H4TU-C.
SmartJack Loopup or NID payload (PL) code.
Invokes H4TU-R loopback towards network.
SmartJack Loopup or NID (ESF-DL) code.
Invokes H4TU-R loopback towards network.
SmartJack Loopdown or NID payload (PL) code.
Removes SMJK, NLOC, NREM, CLOC, and
CREM.
SmartJack Loopdown or NID (ESF-DL) code.
Removes SMJK, NLOC, NREM, CLOC, and
CREM.
SmartJack Loopup code from the network.
Invokes H2TU-R loopback towards network.
SmartJack Loopdown code from the network or
customer interfaces. Removes any loopback in
the system.
October 15, 2003
Method of Activation
Test Set Craft Port
X X
X X
X X
X X
X X
X X
X X
X X
X
X
X
X
X
X
Testing
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