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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-741HYB-LINE (Hybrid Line)
10
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
Local Digital Loop Around Test
, for example, you may also clear errors
generated from other tests in the testing sequence.
NPE Crosstalk Test (#6)
One or more NPEs reside on each circuit pack with a TDM Bus interface. 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 part of a port’s Long Test Sequence
and takes about 20 to 30 seconds to complete.
1. D = Destructive; ND = Nondestructive
Order of Investigation
Short Test
Sequence
Long Test
Sequence D/ND
1
Local Digital Loop Around Test (#58) X ND
NPE Crosstalk Test (#6) X ND
Hybrid Electronic Power Feed Test (#56) X ND
Hybrid Circuit and Conference Circuit
Test (#57)
XND
Remote Digital Loop Around Test (#59) X X ND
Station Lamp Update Test (#60) X X ND
Station Audits Test (#61) X X ND
Ringer Update Test (#62) X X ND