Maintenance Object Repair Procedures
555-233-123
10-2008 Issue 4 May 2002
o. Error type 3999 indicates that the circuit pack sent a large number of
control channel messages to the switch within a short period of time. If
error type 1538 is also present, then the circuit pack was taken
out-of-service due to hyperactivity. If error type 1538 is not present, then
the circuit pack has not been taken out-of-service, but it has generated
50% of the messages necessary to be considered hyperactive. This may
be completely normal during heavy traffic periods. However, if this error
type is logged when the circuit pack is being lightly used, it may indicate a
problem with the circuit pack or the equipment attached to it.
System Technician-Demanded Tests: Descriptions
and Error Codes
Always investigate tests in the order presented in the table below when inspecting
errors in the system. By clearing error codes associated with the Control Channel
Loop Around Test, for example, you may also clear errors generated from other
tests in the testing sequence.
a. Only applicable to Analog Line circuit packs.
b. Only applicable to TN746 and TN769 Analog Line circuit packs.
NPE Audit Test (#50)
The system sends a message to the on-board microprocessor to update the
network connectivity translation for all the Network Processing Elements (NPEs)
on the circuit pack.
Order of Investigation
Short Test
Sequence
Long Test
Sequence
Reset
Board
Sequence
D/
ND
1
1 D = Destructive; ND = Nondestructive
NPE Audit Test (#50) X ND
Ringing Application Test (#51) (a) X X ND
Control Channel Loop Around Test
(#52)
XX ND
SAKI Sanity Test (#53) X D
Neon Test (#220) (b) X X ND
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