Maintenance Object Repair Procedures
555-233-123
10-512 Issue 4 May 2002
Digital Loop Around Test (#171)
The Digital Loop Around Test checks the Data Line’s ability to transmit and
receive data on the TDM Bus. Data is sent through Network Control Data Channel
3 (data channel port 3) over the TDM Bus, internally looped through the Data Line
back onto the TDM Bus, and received again by Network Control Data Channel 3.
If data channel 3 is in use or not administered, this test aborts. This test may fail if
Network Control Data Channel 3 is not functioning properly. If there are any
DATA-CHL errors in the Error Log, refer to the DATA-BD (Network Control Circuit
Pack) Maintenance documentation to clear them up first. This test passes
regardless of any customer equipment that may be connected to the port, as long
as the port is not in use by the equipment.
Table 10-189. TEST #171 Digital Loop Around Test
Error
Code
Te s t
Result Description/Recommendation
ABORT Internal system error
1. Retry the command at 1-minute intervals a maximum of 5
times.
1000 ABORT System resources required to run this test are not available.
The port may be in use on a valid call. Use status
data-module to determine when the port is available for
testing.
1. Retry the command at 1-minute intervals a maximum of 5
times.
1005
1007
ABORT Network Control Data Channel 3 is not administered. This port
is required to run this test.
1. Verify that data channel 3 is not administered with the list
data-module command. Administer data channel 3 with
the add data-module command, and run this test again.
1016 ABORT Network Control Data Channel 3 is busy. The port may be in
use on a valid call. Use status data-module to determine
when the port is available for testing.
1. Retry the command at 1-minute intervals a maximum of 5
times.
1020 ABORT The test did not run due to an already existing error on this port
(Error Type 769).
1. Reseat the circuit pack and look in the Error Log. If Error
Type 769 still occurs on this port, replace the circuit pack.
Continued on next page
To Next Page
Loading...
