DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1835UDS1-BD (UDS1 Interface Circuit Pack)
9
m. DS1 circuit pack suffix inco rrect for CSU Module. The
Near-End CSU Type
field on the
add ds1
form has been administered as
integrated
but the
DS1 circuit pack is not a TN464F or later suffix UDS1 board.
If the 120A1 CSU Module is to be used, remove the c ircuit pack and
replace it with a TN464F or later suffix board. Otherwise, use the
change
ds1
command to chang e the
Near-End CSU Type
field to
other
.
n. BLB failure. This error occurs when the DS1 Board Loopb ack (BLB)
demand test fails. Repeat the test using the following command s:
busyout
board UUCSS
,
test ds1-loop UUCSS ds1/csu-loop back-tests
,
release
board UUCSS
. If the BLB test continues to fail, then the TN464F circuit
pack needs to be replaced.
o. ELB failure. This error occurs when the Integrated CSU (I-CSU) Module
Equipment Loopbac k (ELB) test fails. This test is executed by the I-C SU
during I-CSU power-up/reset (i.e.- TN464F board physicall y inserted and
120A1 CSU Module already installed) or when the 120A1 CSU Module is
plugged on t o an already initialized TN464F DS1 board. The ELB test is
also executed as par t of the command
test ds1-loop UUCSS
ds1/csu-loopback-tests
.
Attempt to clear the alarm via the follo wing commands:
busyout board
UUCSS
,
test ds1-loop UUCSS ds1/csu-loop back-tests
,
release board
UUCSS
. If the ELB test continues to fail, then either the TN464F board, the
CSU Module, or the I/O cable b etween the backplane and the CSU
module (or any combination t hereof) has failed. Attempt to isolate where
the failure is occurring b y re-executing the test and by replacing one piece
of hardware at a time.
p. RLB failure. This error occurs when the Integrated CSU (I-CSU) Module
Repeater Loopback (RLB) test fails. This test is exec uted by the I-CSU
during I-CSU power-up/reset (i.e.- TN464F board physicall y inserted and
120A1 CSU Module already installed) or when the 120A1 CSU Module is
plugged on t o an already initialized DS1 board. The RLB test is also
executed as part of the command
test ds1-loop UUCSS
ds1/csu-loopback-tests
.
Attempt to clear the alarm via the follo wing commands:
busyout board
UUCSS
,
test ds1-loop UUCSS ds1/csu-loop back-tests
,
release board
UUCSS
. If the RLB test continues to fail, then the CSU Module need s to be
replaced .
q. CPE Loopback Jack d eactivation error. This error occurs when the
TN464F circuit pack could not deactivate a CPE Loopbac k Jack on
power-up/reset or upon software request .
Attempt to clear the alarm via the follo wing commands:
busyout board
UUCSS
,
test ds1-loopback UUCSS end-loopback/span-test
,
release
board UUCSS
. If the attempt to deactivate the CPE Loopback Jack
continues to fail, other steps must b e taken to deactivate the loop back.