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E1
LOCAL LOOPBCK
There are three available choices for setting the local loopback:
Line On
Payload On
No Loopback
Scroll to select a setting and record it by pressing Enter. The unit
returns the display of 1)LOCAL LOOPBCK and 2)REMOTE LOOP-
BCK
REMOTE LOOPBCK
FE1 Loopback sends V.54 loopback code in all mapped TSOs
toward the network. Far end will respond by initiating a local line
loopback.
TEST PATTERN
All Ones
Sends an all ones pattern to the network.
All Zeros
Sends an all zeros pattern to the network.
61200420L1-1
ESU 120e
NI CSU
Payload Loopback
Line Loopback
Figure 7-2. Network Loopback Tests
Activates the line loopback
Activates the payload loopback
Deactivates the loopback
ESU 120e User Manual
Chapter 7. Test Menu
Secondary
Interface
7-3
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