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Chapter 3. Operation
3-26 TSU User Manual 61200060L1-1
1)Network Tests, Submenu of 4)Test
Network Tests are used to control the activation of loopbacks
and the initiation of data test patterns.
The Network tests are run on the Network INterface (NI).
Three different test configurations can be selected to
determine the type of loopback and the pattern to run. Test
results are displayed in the LCD window.
1. With the cursor on main menu item 4)T
EST
, press
ENTER.
The first twoTest submenu items with the cursor on
1)NETWORK TESTS displays.
2. Press
ENTER
.
The first of three submenu choices with the cursor on
1)LOCAL LOOPBCK displays. There are three available
choices for setting the local loopback.
Line On - Activates the line loopback
Payload On - Activates the payload loopback
No loopback -Deactivatestheloopback.
3. Use the up and down scroll keys to select and press
ENTER
to record selection. The cursor returns to the 1 in
front of L
OCAL
L
OOPBACK
.
4. Use the up and down scroll keys to select 2)REMOTE
LOOPBACK or 3)PATTERN.
2)REMOTE LOOPBK- activates the same loopbacks as the
LOCAL but at the far end. This uses either the inband loopup
code as specified byAT&T 62411 for line loopback (ATT In-
Band LLB), or the FDL as specified in ANSI T1.403 for
payload and line loopback codes. An FDL (formerly TABS)
maintenance message corresponding to AT&T TR54016 can
be used for payload loopback as well.
• No loopback - deactivates the loopback