User manual
DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si 
555-230-127  
Issue 1
August 1997
Maintenance Object Repair Procedures 
Page 10-522DS1-BD (DS1 Interface Circuit Pack) 
10
In addition, the DS1 circuit pack hardware applies a DC current while the test is 
running in order to detect any broken wires which may not be detected by the 
loopback pattern.
When the test is complete, all trunks or ports on the TN767E DS1 Interface circuit 
pack are restored to the in-service state after the release board command is 
entered.
Table 10-175. TEST #1210 CSU Equipment Loopback Test 
Error 
Code
Test 
Result Description/ Recommendation
ABORT Internal system error
1. Retry 
t
est ds1-loop PCSS ds1/csu-loopback-tests at 1-minute intervals a 
maximum of 5 times.
1005 ABORT CSU Equipment Loopback Test cannot be executed in the current 
configuration. To run this test, the 
Near-End CSU Type
 field on the DS1 circuit 
pack administration form must be set to 
integrated
 and the "Bit Rate" field must 
be set to "1.544" (24-channel operation).
1. Use the change ds1 PCSS command to set the 
Near-End CSU Type
 field 
on the DS1 circuit pack administration form to 
integrated
, and/or change 
the "Bit Rate" field to "1.544" if the board is to be used in the 24-channel 
configuration.
2. Retry test ds1-loop PCSS ds1/csu-loopback-tests.
1015 ABORT Ports on the DS1 Interface circuit pack have not been busied out to 
out-of-service.
1. Enter the busyout board PCSS command to put all trunks or ports of the 
DS1 Interface circuit pack into the out-of-service state.
2. Retry the command.
1039 ABORT The DS1 Interface circuit pack is providing timing for the system. Executing this 
test could cause major system disruption.
If the DS1 Interface circuit pack needs to be tested, set the synchronization 
reference to another DS1 Interface circuit pack or to the Tone-Clock circuit pack 
via the following command sequence: 
1. Issue the disable synchronization-switch command.
2. Next, issue the set synchronization PCSS command.
3. Lastly, issue the enable synchronization-switch command.
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