ADC HiGain H2TU-C-202 User Manual page 49

152-202-116-02, Issue 2
Figure 26 summarizes the available loopbacks in the system, and
generic loopback commands. See
Table 18. Summary of HiGain HDSL2 Loopback Codes and Activation Methods
Loopback Code
NLOC 1111000
4-in-7
NRG1 110000
2-in-6
NRG2 111000
3-in-6
NREM 1110000
3-in-7
CLOC 1111100
5-in-7
CRG1 111100
4-in-6
CRG2 111110
5-in-6
CREM 1111110
6-in-7
SMJK LpUp 11000
(PL) 2-in-5
SMJK LpUp 1111-1111-0
100-1000
(ESF-DL)
SMJK LpDn 11100
(PL) 3-in-5
SMJK LpDn 1111-1111-0
010-0100
(ESF-DL)
H2TU-C-202 List 1F
"Generic Loopback Commands"
Figure 26. Loopback Summary
Description
DSX-1 signal is looped back to the network at the H2TU-C.
DSX-1 signal is looped back to the network at the regenerator 1.
DSX-1 signal is looped back to the network at the regenerator 2.
DSX-1 signal is looped back to the network at the H2TU-R.
Signal from the customer is looped back to the customer at the
H2TU-R.
Signal from the customer is looped back to the customer at
regenerator 1.
Signal from the customer is looped back to the customer at
regenerator 2.
Signal from the customer is looped back to the customer at the
H2TU-C.
SmartJack Loopup or NID payload (PL) code. Invokes H2TU-R
loopback towards network.
SmartJack Loopup or NID (ESF-DL) code. Invokes H2TU-R
loopback towards network.
SmartJack Loopdown or NID payload (PL) code. Removes SMJK,
NLOC, NREM, CLOC, CREM, CRGx, and NRGx.
SmartJack Loopdown or NID (ESF-DL) code. Removes SMJK,
NLOC, NREM, CLOC, CREM, CRGx, and NRGx.
March 14, 2000
Table 18 summarizes the HiGain HDSL2
for the test procedures.
Method of Activation
Test Set
X
X
X
X
X
X
X
X
X
X
X
X
Testing
Craft Port
X
X
X
X
X
X
X
X
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