User manual
DEFINITY ECS Release 8.2 Maintenance for R8.2csi 
555-233-119  Issue 1
April 2000
Maintenance Commands 
2-334test ds1-loop 
2
Feature Interactions
■ Loopback or span tests are not allowed on DS1 boards unless the board 
has been busied out.
■ Only one of the CPE Loopback Jack, far-end CSU, one-way span, or 
DS1/CSU loopback tests may be active at any given time on a DS1 span.
Action/ 
Object Qualifier Qualifier Description Permissions Defaults
Feature
Interactions
test 
ds1-loop
location
cpe-loopback- 
jack-test-begin
far-csu-loopback-
test-begin
one-way-span- 
test-begin
end-loopback/ 
span-test
inject-single-bit- 
error
ds1/csu- 
loopback-tests
Physical location of board 
(
PCSS
)
Long-duration loopback test 
setup through the Customer 
Premises Equipment (CPE) 
Loopback Jack. Allows user to 
specify a loop-up code for the 
CPE loopback jack if it differs 
from the default (0x47F). The 
loop-up code is entered by 
specifying the number of bits in 
the loop-up code as well as the 
actual hexadecimal bit-pattern.
1
Long-duration loopback test 
setup through the far-end 
Channel Service Unit (CSU)
Long-duration one-way span 
test
Terminates long-duration 
one-way span and loopback 
testing
Single bit error sent within an 
active framed 3-in-24 test 
pattern used in long-duration 
loopback and span testing
Sequentially executes the 
following loopback tests: DS1 
Board LoopBack, CSU Module 
Equipment LoopBack, and CSU 
Module Repeater LoopBack.
2
Examples:
test ds1-loop 01c08
test ds1-loop 1-3c03 
cpe-loopback-jack
test ds1-loop 1-3c03 cpe
test ds1-loop 10c03 end
test ds1-loop 02d12 fa
test ds1-loop 02d12 inj
1 For TN464F or TN767E or later suffix DS1 boards only. The test aborts if the board has not been taken out of 
service with the 
busyout
 command.
2 For TN464F or TN767E or later suffix DS1 boards
init
inads
craft
super-user
other
3
3 Logins with 
Maintain Switch Circuit Packs
 permissions enabled.
ds1/csu-
loopbac
k-tests
See below










