Alcatel-Lucent 9500 MXC User Manual page 498

Chapter 8. Protection
Vol. IV-8-16
- The Error-free Timer sets the period of error-free operation needed prior to
initiation of an unwrap. (When a wrap has occurred the timer counts down
towards an unwrap as soon as all wrap conditions are cleared. The count
begins anew should a wrap condition re-occur during the countdown).
Default is 5 minutes (recommended).
- The Delay Ring Unwrap option allows setting of a time of day when an
unwrap will occur providing all wrap conditions have been cleared for a
period not less than that set in the Error-free Timer.
- With this option selected the Wrap and Unwrap criteria default to
Standard.
- The Delay Ring Unwrap has a 1-hour window. If the conditions which
caused the wrap are not cleared by the Error-free Timer during this
window, then Delay Ring Unwrap resets for the same time the
following day.
- The System/Controls screen provides a countdown timer to indicate the
time to go before the ring will unwrap. Applies to both the Error-free Timer
and Delay Ring Unwrap Timer. (Counts down to zero).
5. Should you wish to reverse primary and secondary, or east and west roles,
click on the 'Swap primary and secondary' or 'Swap east and west' tab.
6. To commit the selection, click Send.
To return a protected link/ring to two non-protected links, click on the Break
Protection tab. Existing circuit connections will transfer to what was the primary/
east link. There will be no circuit connections assigned to what was the
secondary/west link.
Changing the protection type or changing the primary and secondary selection
may cause existing circuits to be disconnected. When making a change, always
check any existing circuit connections to/from the affected plug-ins and
reconfigure as necessary.
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