DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-184ATM-EI (Expansion Interface Circuit Pack)
9
NOTE:
To get a better indication of a proble m’s location, test both ATM-EI circuit
packs on the associated fiber link, whether the circ uit packs are both
ATM-EI circuit packs or not.
NPE Cross Talk Test (#6) (TN2238 only)
This test is non-destructive. The NPE Cross Talk test verifies that the selected
TDM bus time slot never crosses over to time slots reserved for other
connections. The test also chec ks for cross connections, where the board
talks/listens to time slots other than those spec ified. Since this test uses many
system resources (TDM time slots, tone generator, tone detec tor, and others), it
runs as a part of a demand test only.
This test fails if either the TDM programmable log ic and/or the interfac e to the
DSP is not operating properly. F ai lur e of t hese components may r esult in on e-wa y
or noisy connections. Refer to Fig ure 9-3 for a schematic of this test.
Table 9-78. System Technician-Demanded Tests: ATM-EI
Order of Investigation Short Test
Sequence Long Test
Sequence Reset Board
Sequence D/ND1
1. D = Destructive, ND = Non-d estructive
ATM Board DSP Test (#1258) for TN2238
circuit packs XX ND
Expansion Interface 2way-Transmission Test
(#241) XX ND
ATM Board Framer Looparound Test (#1260) X D
NPE Cross Talk-Test (#6) for TN2238 circuit
packs XND
Expansion Interface Lock Query Test (#304) X X ND
ATM Board Error Query Test (#1259) X X ND
ATM Expansion Interface Reset (#1256) X D
ATM board DSP test(#1293) for TN2305 and
TN2306 circuit packs. XX ND
ATM Cross Talk test(#1298) for TN2305 and
TN2306 circuit packs XND
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