ETR-PT (Enhanced Tone Receiver Port)
Issue 1 May 2002
8-757555-233-143
The threshold number of ports for service is administered using the
change system-parameters maintenance command.
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 TN2312AP,
do steps 5–12.
2. Execute three commands: busyout board UUCSS, reset board
UUCSS, and release board UUCSS. 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 UUCSS 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 UUCSS 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 all tests pass and the alarm does not resolve, retest (test tone
UUCSS 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 UUCSS long). This resets the
board and is required to reload on-board RAM associated with the
circuit pack’s DSPs.
11. If all tests pass and the alarm does not resolve, retest with test tone
UUCSS long clear.
12. If the test passes, terminate the repair process. If it fails, replace the
board.
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