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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-516DIG-LINE (Digital Line)
3
Voice and Control Channel Local Loop Test (#13)
These tests check the information and control channels between the Switch
Processing Element (SPE) and the Digital Line port circuit. The SPE sends a
message to loop around both the information and control channels for the port.
First, the primary information (voice) channel loop back test is run. The test is
performed by sending a digital count from the Tone-Clock circuit pack on the
primary information channel time slot and receiving the same digital count with a
general purpose Tone Detector.
While the primary information channel is still looped around, the Control Channel
Loop Around Test is performed. This test consists of sending four different
transparent patterns to the on-board microprocessor, receiving them back, and
comparing them.
The Loop Around Test for the secondary information (data) channel is then
performed. This test is the same as the primary information channel loop around
test and is performed only if a DTDM is administered.
A Conference Test is done next for the primary information channel. This test is
the same as Conference Test #6.
Only one value (Pass, Fail, or Abort) is generated as a result of four tests run. If
any test fails or aborts, the sequence is stopped.
PASS Electronic Power Feed Test passed. The message to turn on the power to
the station was successfully sent to the port.
1. Although this test will never actually return a FAIL result except for the
Internal system error (naught/FAIL ) described above, it will log an
error indicating the real results of the test. Check the Error Log for any
entries with Error Types 767 or 769 after the test completes.
2. If Error Type 767 appears in the Error Log, this should indicate that the
test sensed no problems with the power to the station. To verify that the
station is powered up correctly, run a self-test on the station, if
available, and check that all the feature buttons are operating.
3. If Error Type 769 appears in the Error Log, this indicates some problem
with the power to the station. Check for a short in the wiring, a
damaged jack, a defective voice terminal, or an incorrect type of
terminal.
Table 3-217. TEST #11 Digital Line Electronic Power Feed Test — Continued
Error
Code
Te s t
Result Description/ Recommendation
Continued on next page