DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1166PDMODULE (Processor Data Module) TDMODULE (Trunk Data Module)
9
n. Make sure the data module is connected and operating properly. Check
for faulty wiring. If necessary, reduce the length of the cable between the
data module and the switch to 5000 ft for 24-gauge wire or 4000 ft for
24-gauge wire. Refer to
DEFINITY Communications System Generic 1 and
3 - Installation and Test
, 555-230-104.
If the problem still exists, replace the circuit pack. Once the problem has
been resolved, the alarm will be retired in 60 minutes (90 min for error
1537). (These error counters use the leaky bucket mechanism.)
The DA module is not phantom-powered from the port. Thus when it is in
linked mode, its range is limited by the Italtel digital phone’s limit: 0.7 Km
(2300) ft on 26-gauge wire or 1.8 Km (5900) ft on 22-gauge (0.6 mm) wire.
If in stand-alone mode, it is limited by the maximum length of loop allowed
from the Digital Line Interface (DLI) component: up to 3.5 Km (2 miles) on
22-gauge (0.6 mm) wire.
System Technician-Demanded Tests: Descriptions
and Error Codes
Always investigate tests in the order presented in the table below. By clearing
error codes associated with the
Data Module Internal Looparound Test,
for
example, you may also clear errors generated from other tests in the testing
sequence.
NPE Crosstalk Test (#9)
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. If a secondary data module is assigned, it is tested after the primary
data module. If either test fails, both data modules are taken out of service. This
test usually run only during the long test sequence and takes about 20 to 30
seconds to complete.
Order of Investigation
Short Test
Sequence
Long Test
Sequence D/ND
1
1. D = Destructive; ND = Nondestructive
Data Module Internal Looparound Test (#175) X ND
Digital Port Board Network Processing Element Crosstalk
Test (#9)
XND
Port Circuit Information Channel and Control Channel
Looparound Test (#13)
XND
Data Module Audits Test (#17) X X ND
