DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-313BRI-PORT (ISDN-BRI Port), ABRI-PORT (ASAI ISDN-BRI Port)]
9
System Technician-Demanded Tests: Descriptions
and Error Codes
Always investigate tests in the order presented in the following tables when
inspecting errors in the system. By clearing error codes associated with the
NPE
Crosstalk Test
, for example, you may also clear errors generated from other tests
in the testing sequence.
NOTE:
The NPE Crosstalk Test and the BRI Port Local TDM Loop Around Test are
not executed for ABRI-PORT/ATT-PORT/LGATE-PT/ATTE-PT.
NPE Crosstalk Test (#617)
This test is destructive.
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 approximately 20 to 30 seconds to complete. Crosstalk testing is
Order of Investigation
Short Test
Sequence
Long Test
Sequence D/ND
1
1. D = Destructive; ND = Nondestructive
NPE Crosstalk Test (#617) X D
BRI Port Local LAN Loop Around Test
(#618)
XD
BRI Port Local TDM Loop Around Test
(#619)
XD
Electronic Power Feed Restoral Test
(#620)
XXND
Level 1 Status Inquiry Test (#621) X X ND
Electronic Power Feed Inquiry Test (#622) X X ND
CRC Error Counter Test (#623) X ND
Layer 1 Transmission Error Counter Test
(#624)
XND
Receive FIFO Overflow Error Counter Test
(#625)
XND
Clear Error Counters (#270) X X ND
