User Guide
DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si 
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures 
Page 10-1622UDS1-BD (UDS1 Interface Circuit Pack) 
10
All trunks or ports on the UDS1 Interface circuit pack must be busied out via the 
system technician busyout board command before running the One-Way Span 
Test.
The One-Way Span Test has the TN464F UDS1 Interface circuit pack transmit a 
framed 3-in-24 test pattern and attempt to receive and verify the pattern. If the 
TN464F board receives a framed 3-in-24 test pattern sent from another DEFINITY 
G3V3 or test equipment at the far-end of the DS1, it will begin counting bit errors 
within the received pattern.
The status of the One-Way Span test will be available in the hardware error log 
via error type 3902. Several distinct aux values will be used to give the user 
information of the status of the test.
The 
list measurements ds1 summary
 command will display the length of time the 
test has been running (
Test Duration
 field) and number of bit errors detected 
(
Loopback/Span Test Bit-Error Count
 field). If the test pattern is being sent 
cleanly over the span from the far-end, the number of bit errors should be very 
low. The 
Test Duration
 field will show 
0
 until the test pattern is received from the 
far-end. Upon receiving the test pattern, the board will begin calculating the test 
duration and number of bit errors. The command will also display the type of 
Loopback/Span test executing (
Test Field
), the type of pattern generated for the 
Loopback/Span test (
Pattern Field
),and whether the pattern(
i.e.
 3-in-24
 Pattern
) 
is synchronized (
Synchronized Field
).
To terminate the test, enter the 
test ds1-loop PCSS end-loopback/span-test
command or the release board command. Using the release board command 
will restore all trunks or ports on the TN464F UDS1 Interface circuit pack to the 
in-service state.
Table 10-474. TEST #1214 One-Way Span Test 
Error 
Code
Test 
Result Description/ Recommendation
ABORT Internal System Error
1. Retry the 
test ds1-loop PCSS 
one-way-span-test-begin
 command at 1-minute 
intervals a maximum of 5 times.
2. If the test continues to abort, escalate the problem.
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