Timing features
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Synchronization modes
Several synchronization configurations can be used. Metropolis
®
AMU can be
provisioned for the following timing modes:
•
free-running operation
•
holdover mode
•
locked mode
In locked mode, the internal SDH Equipment Clock (SEC) is locked to:
•
one of the STM-N signals.
•
one of the 2 Mbit/s tributary signals
•
one of the external 2 MHz / 2 Mbit/s inputs (one per main board)
Features
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365-312-847R4.0
Issue 4, November 2006
Lucent Technologies - Proprietary
See notice on first page
3-29