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DS0 Remote Test
EQUIPMENT
TERMINAL
(OR TEST EQUIPMENT)
ON SELECTED CHANNEL
DS0 Remote Test, illustrated in Figure 4-17, tests both CSUs and the T1
link by transmitting, on the selected channel, a locally-generated test
message through the local CSU to the remote CSU and looping it back to
the test equipment for verification.
To perform this test, refer to Table 4-11.
TABLE 4-11. DS0 REMOTE TEST
Step
1.
To prevent data loss, suspend operation of all associated digital-terminating
equipment on the channel to be tested.
2.
Connect the test equipment to the local channel to be tested, as shown.
3.
At the remote CSU, select the desired channel, select LOOPBACK mode, and
then initiate the test (all on the DS0 DIAGNOSTICS screen). The status line
DS0LB indicator should come on.
4.
Generate a test message. The test equipment should receive the same mes-
sage it transmitted; if not, a problem exists.
5.
To stop the test, terminate LOOPBACK.
LOCAL CSU
FIGURE 4-17. DS0 REMOTE TEST
Supervisory Terminal Control
T1
NETWORK
REMOTE CSU
TESTS
EQUIPMENT
ONLY THE
SELECTED CHANNEL
IS AFFECTED
4-21
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