Bit Error Rate Test; Lamp Test; Dial Tone Test - Paradyne COMSPHERE
3610 User Manual

Bit Error Rate Test

The Bit Error Rate Test (BERT) is a session-
disruptive test that transmits a pseudo-random pattern.
The test pattern is set to Standard 511 test pattern or
AT&T (compatible with DPII 2500/2600 DSUs) using the
Tst Pattern configuration option (Table 4-4).
BERT is used to analyze the network circuit. The
results can be monitored by simultaneously executing a
BERT in the local and remote DSUs. The Bit Error Rate
Test is designed for point-to-point networks only; use the
Digital Test (DT) for multipoint networks. This test is not
available for a control DSU with the DBM in Backup
mode or when in Remote mode with in-band framing.
The test continues until aborted from the front panel,
an async terminal, or an NMS. This test can be run on an
aggregate or per-port basis. When run on an aggregate
basis, in-band diagnostics are disrupted.
To display the results of the BERT test, press
select Display (Displ). The results are shown in Table 3-5.
The Clear (Clr) selection clears the test results and resets
the timer to zero.
Table 3-5
Bit Error Rate Test (BERT) Results
Results Information Displayed
Time: Running test timer.
Tot Running count of bits in error. MAX appears
Error: when the error count reaches about 65000.
Err Running count of errored seconds. An
Secs: errored second is at least one error detected
during a 1-second time period.
Run on: Port selected for testing.
port nn
When the test is over:
The top line display changes from Active to Final.
The second line changes from Please wait . . . to
either Command Complete or Command Failed.
3610-A2-GB46-60

Lamp Test

The Lamp test is a test of the status indicators (LEDs)
and the LCDs. Any indicator that does not flash is not
functional.
All LEDs are functioning if all the status indicators
on the Model 3610 front panel are flashing.
In a COMSPHERE 3000 Series Carrier, the status
indicators on the SDCP remain ON.
The LCD on the front panel or SDCP alternately
flashes solid blocks, followed by a character set
display.
Pressing any key except the
DSU Test menu to abort the test. Once the test aborts, the
LCD and LEDs stop flashing.
and

Dial Tone Test

The Dial Tone test (DTone) allows a DBM to test for
dial tone. This selection does not appear in the DSU's Test
branch.
December 1996
Front Panel Operation
key returns you to the
3-13