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Chapter 3. Operation
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)TEST, 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 - Deactivates the loopback.
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 LOCAL LOOPBACK.
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
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