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ATM-TRK (Circuit Emulation Service Circuit Pack)
Issue 1 June 2005 645
ATM Board DSP Test (#1293)
This test is nondestructive.
There are three kinds of digital signal processors (DSPs): talkers, listeners, and echo
cancelers.Talkers put data on the TDM bus, listeners take data off the TDM bus, and echo
cancelers filter out echoes of the main transmission. Firmware allocates DSPs in sets of three
(one of each type), up to a maximum of 8 sets. This has three parts, one for each type of DSP.
If the test fails for every DSP, a MAJOR alarm is raised. If the test fails for one or more DSPs, a
MINOR alarm is raised. If a DSP is busy, the test passes for that DSP. The test aborts if system
resources are not available. Each part of the test returns the number of DSPs that passed or
failed. This test run during initialization, error analysis testing, periodic, scheduled, and craft
short and long testing.
Table 220: ATM Board DSP Test (#1293)
Error
Code
Test
Result
Description / Recommendation
1002 ABRT Could not allocate time slots. Traffic could be heavy or time slots could be
out-of-service.
1. Run display errors, and follow associated repair procedures for
TDM-BUS.
2. Retry the command up to 3 times at 1-minute intervals.
1003 ABRT Could not allocate a Tone Detector. Too few Tone Detectors present or
Tone Detectors out-of-service.
1. Run display errors, and follow the repair procedures associated
with any TTR-LEV (TTR Level) errors that appear.
2. Verify that there is at least one Tone Detector in the PN that holds the
ATM-TRK circuit pack.
3. Resolve any TONE-PT (Tone Generator) errors listed in the Error Log.
4. Retry the command up to 3 times at 1-minute intervals.
1962 ABRT Every DSPs is busy. This is a very unlikely event.
1. Retry the command up to 3 times at 1-minute intervals.
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