Verilink DCSU 2911 (880-502647-001) Product Manual Manual de usuario descargar pdf (Pagina 33)

DCSU T1 Craft Interface

Verilink DCSU 2911 User Manual

3-11

Alternate Timing

Options

Submenu

If the option, “Receive clock from shelf” has been selected by using

the

command from the

Configuration Menu (Timing Options)

submenu, the Shelf Timing Table is displayed. (Figure 3-5)

SS Secondary Synchronization: Use this option to specify an alternate source

of timing for synchronization. If the primary source is unavailable, this

source will be used.

Net 1: Network port 1

Net 2: Network port 2

External: External clock

Internal: Internal clock

Net 3: Equipment port 1 TT signal

Net 4: Equipment port 2 TT signal

1) NET 1

2) NET 2

3) EXTERNAL

4) INTERNAL

5) NET 3

6) NET 4

TS Tertiary Synchronization: Use this option to specify an alternate source of

timing for synchronization. If the primary and secondary sources are

unavailable, this source will be used.

Net 1: Network port 1

Net 2: Network port 2

External: External clock

Internal: Internal clock

Net 3: Equipment port 1 TT signal

Net 4: Equipment port 2 TT signal

1) NET 1

2) NET 2

3) EXTERNAL

4) INTERNAL

5) NET 3

6) NET 4

PA Primary Auto Restore: Choose

Yes

to resynchronize to the clock

preference automatically if the clock in the node fails. Otherwise, choose

to synchronize to other sources (secondary, tertiary) or stay down. In

case of a failure, setting up auto restore helps restore timing. If you have

not set up auto-restore to the primary source because you believe that it is

unstable; but you have chosen a secondary source; after rebooting, the

module will use the latter as the source to restore timing to the module or

shelf.

Yes or No

(Y/N)

SA Secondary Auto-Restore: Choose

Yes

to resynchronize to the clock

preference automatically if that clock in the node fails. Otherwise, choose

to synchronize to other sources (primary, tertiary) or stay down.

Specifying a secondary source for clocking is useful for power failures that

result in the failure of the primary automatic restore source. Restoring

from a secondary source may take up to 60 seconds.

Yes or No

(Y/N)

TA Tertiary Auto Restore: Choose

Yes

to resynchronize to the clock

preference automatically if that clock in the node fails. Otherwise, choose

to synchronize to other sources (primary, secondary) or stay down.

Specifying a tertiary source for clocking is useful if a power failure results

in the failure of the primary and secondary sources for automatic restore.

Restoring from a tertiary source may take up to 90 seconds.

Yes or No

(Y/N)

X Exit the Timing Options screen.

Command Description Options

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 78 79

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