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Sets the node timing mode:
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External —The ONS node derives its timing from the building integrated timing supply (BITS) pins on the MIC-C/T/P coaxial connectors. |
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Line —Timing is derived from an STM-N card or OSC card (in DWDM nodes) that is optically connected to the timing node. |
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Mixed —Timing is set to external and line timing references. |
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If checked, the ONS node reverts to a primary reference source after the conditions that caused it to switch to a secondary timing reference are corrected.
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If Revertive is checked, indicates the amount of time the ONS node will wait before reverting to its primary timing source. Five minutes is the default.
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Defines the node’s timing references (Ref 1, Ref 2, Ref 3). The node uses Reference 1 unless a failure occurs to that reference or its quality degrades, in which case the node uses Reference 2. If Reference 2 fails, the node uses Reference 3, which is typically set to Internal Clock (the Stratum 3 clock provided on the TCC2/TCC2P card). The options that appear depend on the Timing Mode setting.
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If the Timing Mode is set to External, options are BITS-1, BITS-2, and Internal Clock. |
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If the Timing Mode is set to Line, options are the node's working STM-N cards (non-DWDM nodes) or OSC cards (DWDM nodes) and Internal Clock. |
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If the Timing Mode is set to Mixed, both BITS and STM-N cards are available. |
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BITS-1 Out/BITS-2 Out: Sets the timing references for equipment connected to the BITS Out MIC-C/T/P pins. BITS-1 Out and BITS-2 Out are enabled when BITS-1 and BITS-2 facilities are put in service. |
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Applies changes to the Timing > General subtab.
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Cancels Timing > General subtab changes and returns the fields to their last-saved settings.
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Displays context-sensitive help.
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