Lucent Technologies Release 7 9-1358RING-GEN , (contd. )

DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4 June 1999
Maintenance Object Repair Procedures
9-1358RING-GEN
9
FAIL The ringing voltage is below acceptable levels. Procedure for a multicarrier cabinet
system:
1. If this is a dupl icated SPE s ystem, the n determi ne the act ive Tone/Cloc k circui t
pack by is suing a status port-netw ork command. Make the St andby Tone/Clock
circuit pack active via the set tone-clock PC command and rerun the test.
a. If the test passes, then the trouble is with the now Standby Tone/Clock circuit
pack. Refer to “TONE-BD” for details on replacing the Standby Tone/Clock
circuit pack. After the circuit pac k is replaced, make this Tone/Clock active
again by issuing the set tone-clock PC command and rerun the test.
b. If the test fails, then proceed with Step 2.
2. Resolve CARR-POW alarms first, and then rerun the test.
3. Check fuse on the power distribution unit. Replace if it is open, and rerun the test.
If the test still fails, then an analog line circuit pack could be defective and
causing the ring generator and/or fuse to fail.
4. Unseat all analog circuit packs in the affected cabinet, and rerun the test.
5. If the test passes, then the ring generator is healthy, and one of the analog circuit
packs is defective. Replace the analog c ircuit packs one at a time, and rerun the
test to determine which circuit pack is causing the problem. When the defective
analog circuit pack is found, replac e it and rerun the test. If the test still fails,
proceed with Step 6.
FAIL
(cont’d.
)
6. Since the test still fails, the ring generator is defective.
a. If the reset button on the ring generator is out, press it in.
b. Originate calls to several analog stations on different port circuit packs in
different carriers in the affected port network.
c. If called stations ring, the fault is cleared. Proceed to Step d. If no stations
ring, replace the ring generator.
d. Rerun the test. If the test still fails, proceed to Step 7.
7. The active tone/clock may be faulty and incorrectly reporting the level of the
ringing voltage. Replace the active tone/clock and rerun the test. Refer to
“TONE-BD” for details on replacing the tone/clock. Rerun the test.
Table 9-537. TEST #118 Analog Ring Generator Query Test — Continued
Error
Code Test Result Description/ Recommendation
Continued on next page