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Issue 5 October 2002
NPE Crosstalk Test (#6)
One or more Network Processing Elements (NPEs) resides on each circuit pack
with a TDM Bus interface. (The TN464 UDS1 circuit pack has one SCOTCH-NPE
chip instead of several NPE chips.) The NPE controls port connectivity and gain,
and provides conferencing functions on a per-port basis. The NPE Crosstalk Test
verifies that this port’s NPE channel talks on the selected time slot and never
crosses over to time slots reserved for other connections. If the NPE is not
working correctly, one-way and noisy connections may be observed. This test is
usually only part of a port’s Long Test Sequence and takes about 20 to 30
seconds to complete.
Table 210. TEST #6 NPE Crosstalk Test
Error
Code Test
Result Description/ Recommendation
ABORT System resources required for this test are not available.
1. Retry the command at 1-minute intervals a maximum of 5 times.
1000 ABORT System resources required to run this test are not available. The port may
be in use on a valid call. Use the status station or status trunk command
to determine when the port is available for testing.
1. Retry the command at 1-minute intervals a maximum of 5 times.
1001 ABORT System resources required for this test are not available.
1. Retry the command at 1-minute intervals a maximum of 5 times.
1002 ABORT The system could not allocate time slots for the test. The system may be
under heavy traffic conditions or it may have time slots out-of-service due to
TDM-BUS errors. The status health command can be used to determine if
the system is experiencing heavy traffic. Refer to the TDM-BUS (TDM Bus)
Maintenance documentation to diagnose any active TDM-BUS errors.
1. If system has no TDM-BUS errors and is not handling heavy traffic,
repeat test at 1-minute intervals a maximum of 5 times.
1003 ABORT The system could not allocate a tone receiver for the test. The system may
be oversized for the number of Tone Detectors present or some tone
detectors may be out-of-service. The list measurements tone-receiver
command will display information on the system’s tone receivers.
1. Look for TTR-LEV errors in the Error Log. If present, refer to TTR-LEV
(TTR Level) Maintenance documentation.
2. Look for TONE-PT errors in the Error Log. If present, refer to TONE-PT
(Tone Generator) Maintenance documentation.
3. If neither condition exists, retry the test at 1-minute intervals a
maximum of 5 times.
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