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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 10-535DS1-BD (DS1 Interface Circuit Pack)
10
120A1 CSU Module already installed) or when the 120A1 CSU Module is
plugged on to an already initialized DS1 board. The ELB test is also
executed as part of the command test ds1-loop PCSS
ds1/csu-loopback-tests.
Attempt to clear the alarm via the following commands: busyout board
PCSS, test ds1-loop PCSS ds1/csu-loopback-tests, and release board
PCSS. If the ELB test continues to fail, then either the TN767E board, the
CSU Module, or the I/O cable between the backplane and the CSU
module (or any combination thereof) has failed. Attempt to isolate where
the failure is occurring by re-executing the test by replacing one piece of
hardware at a time.
n. RLB failure. This error occurs when the Integrated CSU (I-CSU) Module
Repeater Loopback (RLB) test fails. This test is executed by the I-CSU
during I-CSU power-up/reset (i.e., TN767E board physically inserted and
120A1 CSU Module already installed) or when the 120A1 CSU Module is
plugged on to an already initialized DS1 board. The RLB test is also
executed as part of the command test ds1-loop PCSS
ds1/csu-loopback-tests.
Attempt to clear the alarm via the following commands: busyout board
PCSS, test ds1-loop PCSS ds1/csu-loopback-tests, and release board
PCSS. If the RLB test continues to fail, then the CSU Module needs to be
replaced.
o. CPE Loopback Jack deactivation error. This error occurs when the
TN767E circuit pack could not deactivate a CPE Loopback Jack
loopback.
Attempt to clear the alarm via the following commands: busyout board
PCSS, test ds1-loop PCSS end-loopback/span-test, and release board
PCSS. If the attempt to deactivate the CPE Loopback Jack loopback
continues to fail, other steps must be taken to deactivate the loopback.
p. Far CSU Loopback deactivation error. This error occurs when the TN767E
circuit pack could not deactivate a far-end CSU loopback on
power-up/reset or upon software request.
Attempt to clear the alarm via the following commands:
busyout board
PCSS
,
test ds1-loop PCSS end-loopback/span-test
,
release board PCSS
.
If the attempt to deactivate the Far CSU loopback continues to fail, then
escalate the problem.
q. The hyperactive circuit pack is out-of-service and may exhibit one or more
of the following symptoms:
1. The common circuit pack level tests such as Test #51 and/or Test
#220 are aborting with error code 2000.
2. The tests run on the ports of this circuit pack are returning NO
BOARD.
3. A busy-out/release of the circuit pack has no affect on test results.