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Communication Manager Maintenance-Object Repair Procedures
570 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
ATM Board DSP Test (#1293)
This test is nondestructive and is designed to test the board’s interface to the TDM bus and the
functions of all 24 on-board DSPs (Digital Signal Processors). There are three functional types
of DSPs:
● talkers – put data on the TDM bus
● listeners – take data off the TDM bus
● echo cancelers – as implied
Listener and echo cancelers are tightly coupled because firmware allocates sets of DSPs.
Since there are a total of 24 DSPs on the board, there can be up to 8 triplets allocated.
If the test fails for every DSP, a MAJOR alarm is raised against the board. If the test fails for one
or more DSPs, a MINOR alarm is raised. If a DSP is busy, the test for that particular DSP is
considered passed. The test aborts if the system resources (for example, the TDM time slots,
Tone Generator, and others) are not available.
This test applies to TN2305 and TN2306 ATM-EIs, both active and standby, and is run as part of
craft short and long testing, periodic, scheduled, initialization, and error analysis testing. Refer
to Figure 30: ATM Board DSP Test (#1293)
on page 570 for a diagram of this loop-around test.
Figure 30: ATM Board DSP Test (#1293)
Table 185: ATM Board DSP Test (#1293)
Error
Code
Test
Result
Description / Recommendation
1002 ABRT The system could not allocate time slots for the test. The system could be
under heavy traffic conditions or it could have time slots out of service due
to TDM-BUS errors.
1. If the system has no TDM-BUS errors and is not handling heavy traffic,
retry the command at 1-minute intervals up to 3 times.
1 of 3
ATM
circuit
pack
iodfatmdAWF 040699
DSP echo
DSP listener
CCMS
CCMS
DSP talker
Tone detector
TDM bus
(PN X)
Tone clock
Tone detector