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12-18 User's Reference Guide
The T1 Line Statistics / Diagnostics screen appears.
--Condition------------------00:00---09:58---09:43---09:28---09:13---24 hours-
Errored Seconds
Unavailable Seconds
Severely Errored Seconds
Bursty Errored Seconds
Loss of Frame Count
Bipolar Violation Count
Line Status:
Loopback Status:
Tests...
The screen displays the current condition of tests that you run. The counters display the occurrences of the
indicated events in fifteen-minute increments, shifting the totals to the column to the right after each fifteen
minute cycle until the total is accumulated in the 24 hour column.
Condition: Displays the parameters tested.
Time columns: Current time (00:00) starts at zero and resets to zero at 15:00 minutes, shifting the counted
total to the next column to its right.
24 hours: Cumulative statistics, for the preceding 24 hour period.
Line Status: Conditions may be: Normal Operation, Red Alarm, Yellow Alarm, or (Rmt/Lcl) LoopBack
Loopback Status: Current loopback condition
Tests offers a pop-up menu with the following options:
Normal - Clear Loopback clears any local loopbacks, and sends an ANSI PLB clear to the remote CSU. This
returns the Netopia R5000 Series Router to its normal state if any testing has been done and the router
has been put into a looped state. Select this option after running tests to return the router to a normal
state so that it is capable of passing traffic as it should.
Send Blue Alarm -all 1s forces an error condition of all 1s, remote will send a yellow alarm if enabled. You
can use this pattern in two different ways. Once a remote router has been looped you can use it to verify
that you are receiving the same data that you are sending. For example, if you send all ones across the line
and get back a mixture of ones and zeroes, there is a problem. You can also use this test in a different
way. If you send all ones to a remote device, it should report that it is receiving all ones. This would verify
(without having to put up a loop) that data is reaching the destination intact. It does not verify bi-directional
integrity however, which is verified if you have the remote end in loop. This pattern is also for checking the
remote end's capability of reporting back a yellow alarm (usually something that is optionally enabled on
T1 Line Statistics / Diagnostics
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Normal Operation
Clear - No Loopback Enabled
Normal
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