Notes:
a. Error Type 1, 257, 513: There are two possible alarm levels for this Error
Type: major alarm and minor alarm. These alarm levels are dependent on the
administered thresholds for TTR, CPTR, and CCTR. Each ETR port is capable of
operating on any of these. A major alarm is raised if the total number of ports
capable of TTR, CPTR or CCTR detection currently in service is less than or
equal to one-half of the administered TTR, CPTR, or CCTR threshold number.
Otherwise, a minor alarm is raised. The threshold number of ports for service is
administered with change system-parameters maintenance.
If a major or minor alarm occurs, follow this repair procedure.
1. Use list configuration carrier to get the board type and location. If the
board is TN744, then do steps 2-4; if it is TN2182 or TN2312, do steps 5-12.
2. Reset the board with busyout board location, reset board location, and
release board location. A reset is required to reload RAM associated with the
TN744's DSPs. This will take all eight tone detector ports out of service for a
few seconds. Only four of the eight would be out of service due to the alarm.
(There are four tone detectors on each of the two DSPs.) Other than the unlikely
potential of running out of tone detector resources in the switch, there is no
other effect when the board is reset.
3. Test the board (test board location long).
4. If the test passes, terminate the repair process. If the test fails, replace
the board.
5. Check to see if the board is duplicated (list cabinet and status port-network
on the affected PN).
6. If the board is not duplicated, use test tone location long to resolve the
error.
The long test resets the board and is required to reload on-board RAM associated
with the DSPs. The effect is that tone detectors are taken out of service
momentarily and tones are removed from the TDM bus for about 10 seconds. This
means no dial pulses or touch tones during this interval, which probably will
not affect calls in progress but could cause a call origination to abort or
cause a user to not get dial tone when going off-hook.
7. If every test passes and the alarm does not resolve, retest (test tone
location long clear).
8. If the test passes, terminate the repair process. If it fails, replace the
circuit pack at the customer's convenience.
9. If the board is duplicated, switch to the standby side (set tone/set ipserver
-interface).
10. Test the alarmed board (test tone location long). This resets the board and
is required to reload on-board RAM associated with the circuit pack's DSPs.
11. If every test passes and the alarm does not resolve, retest with test tone
location long clear.
12. If the test passes, terminate the repair process. If it fails, replace the
board.
c. Error Type 513: This error indicates the (ETR-PT) Enhanced Tone Receiver is
having problems detecting touch tones, call-progress tones, or MFC tones. If
this Error Type is persistently logged, the circuit pack containing the
defective ETR-PT should be replaced at a time it is convenient to remove a clock
board from the system. Follow the procedures described in TONE-BD (Tone-Clock
Circuit Pack) for replacing a Tone-Clock circuit pack.
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# Here is where you set alarming thresholds:
display system-parameters maintenance Page 2 of 3
MAINTENANCE-RELATED SYSTEM PARAMETERS
MINIMUM MAINTENANCE THRESHOLDS ( Before Notification )
TTRs: 4 CPTRs: 1 Call Classifier Ports: 0
MMIs: 0 VCs: 0
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